INDUSTRY SOLUTIONS - OEM & ODM PRIVATE BRAND

OEM & ODM Private Brand Ball Valve

Manufacturing

OEM, ODM and private-label ball valve manufacturing for global brands, distributors and EPC contractors - your brand, our factory, full documentation.

Get a Factory Quote

Technical FAQ

API 6D

API 607 / ISO 10497 fire-safe

ISO 15848-1 low emission

NACE MR0175

ISO 9001 / 14001 / 45001

EN 10204 3.1

OEM & ODM

Build-to-print and design-led

2 plants

15,000 m² in Wenzhou and Lishui, China

Trial batch

Low MOQ to qualify our quality

EN 10204 3.1

Traceable material certificates

NDA first

Your designs stay yours

4-16 weeks

Typical production lead time

Home index OEM & ODM Private Brand Ball Valve

OEM & ODM Private Brand

The Factory Behind Ball Valve Brands Worldwide

J-VALVES is the manufacturing partner behind valve brands, distributors and EPC contractors in more than 30 markets. We build ball valves under your nameplate and your marking, to your design or to a design our own engineers develop for you - from a single trial batch through to serial production across two dedicated plants in Wenzhou and Lishui, China.

What separates a manufacturing partner from a trading company is what happens when something is difficult. We own the production, the pressure test bench, the cryogenic laboratory and the material laboratory, so the answer to a technical question comes from the people who built the valve - not from a supplier three steps away. Our engineering team reviews your specification line by line, tells you in writing where we comply and where we do not, and stays on your programme from drawing approval to final documentation.

For buyers in Europe, North America and the Gulf, the practical question is rarely price alone - it is risk. Risk that the second batch does not match the first. Risk that the documentation is rejected. Risk that your design leaks to a competitor. Risk that certification blocks the sale in your market. This page sets out exactly how we remove each of those risks, and what we need from you to start.

Request Technical Proposal

CNC machining production workshop manufacturing ball valve components at

J-VALVES

Physical and chemical laboratory verifying ball valve material heat numbers

Engagement Models

Six Ways to Work With J-VALVES

Most OEM relationships start with one model and grow into another. Choose the one that matches where you are today - we will tell you honestly which fits your volume, your market and your stage.

Engagement model	Best for	What J-VALVES delivers	IP, brand and commercial terms
OEM - build to print	Brand owners and OEMs who already have their own design or data sheet	Manufacture exactly to your drawings, material specification and test plan; dimensional and first-article reports; your nameplate and marking	You own the design and the tooling; NDA signed before drawings are exchanged; your design is never reused for another account
ODM - design and manufacture	Distributors and brand owners who want a finished product under their own brand	Our engineers develop or adapt the valve design, validate it with type testing, and release it as a product you can brand, catalogue and resell	You own the branded product and the market position; the base design and tooling stay with J-VALVES unless bought out
Private label / white label	Importers and distributors building a product catalogue	Standard-series floating, trunnion, DBB and welded ball valves with your nameplate, logo, colour and neutral packing, plus brand-ready data sheets	Only your brand appears on the product and the paperwork; the same marked product is not sold to your competitors
Contract manufacturing	OEM machine builders and skid integrators needing valve components	Bodies, balls, stems and seat assemblies machined to your drawings with dimensional and material reports on a repeatable schedule	Design stays yours; capacity and pricing held stable across the contract term
EPC project package	EPC contractors and project procurement teams	Valve list review, written deviation list, ITP with witness and hold points, coordinated third-party inspection, project packing and site delivery	Documentation issued in your project's format; witness testing scheduled to your milestones
Stock and distributor programme	Regional distributors who need continuity of supply	Agreed product list held at defined safety stock, a fixed pricing window, and priority production slots during peak season	Territory and product-line exclusivity discussed case by case and written into the supply agreement
Australia and Asia-Pacific	Project specifications, water authority approvals for potable service, AS alignment	AS-aligned design review, potable-water material options, complete project documentation	Material and coating certificates, potable-water compliant material records

ODM Design & Development

Design-Led Manufacturing, Not Just Build to Print

ODM means you do not have to arrive with a finished drawing. Our engineers can take a performance requirement - or a competitor product you want to improve - and turn it into a manufacturable, testable, certifiable valve.

Mechanical design · valve specialists

In-House Valve Design Team

Our engineering team works from your performance requirement or from a blank sheet. They select bore and port geometry, seat and stem architecture, and specify body and trim materials for the actual service - then release a complete design package for manufacturing review.

Product architecture and material selection

Seat, seal and stem design

Actuator interface and mounting per ISO 5211

Designed against the standard your market requires

2D · 3D · STEP files

CAD, CAE and Design for Manufacture

Every ODM programme is modelled in 3D and reviewed for manufacturability before a single part is cut, so wall thickness, flow path, casting feasibility and assembly sequence are proven on screen rather than discovered on the shop floor.

3D modelling and full 2D drawing sets

STEP files released for your approval

Design-for-manufacture and tolerance review

Drawing revision control through the programme

Sample before you commit

Prototype and First Article

A prototype or first-article valve is built, tested and documented so you can validate performance, fit and finish before committing to a production run - the cheapest possible way to remove risk from a new product line.

Prototype or first-article inspection

Full functional and pressure testing

Dimensional report against your drawing

Serial production only after your written approval

API 607 · ISO 15848-1

Type Testing and Certification

Where your product needs an approval to sell, we arrange and document the type testing - fire-safe to API 607 / ISO 10497, fugitive emission to ISO 15848-1, or a project-specific protocol - so the product you launch already carries the evidence your market asks for.

Fire-safe and fugitive-emission testing

Cryogenic and high-pressure qualification

Third-party witnessed test programmes

Reports issued in your documentation format

GLOBAL MARKET ACCESS

Can You Sell Our Valves in Your Market?

Market access is a commercial question, not a technical footnote. This is how we support the compliance route for the main destination markets - confirm your market and application with us and we will state in writing exactly which certificates apply.

Target market	What your market usually requires	What J-VALVES provides	Evidence in the documentation package
European Union	CE marking under the Pressure Equipment Directive, material certificates to EN 10204, technical file	CE / PED conforming valves, EU-format material certificates, declaration of conformity and technical file support	CE declaration of conformity, EN 10204 3.1 certificates, pressure test records
United Kingdom	UKCA marking as the post-Brexit route for pressure equipment	UKCA-aligned marking and documentation support where both UK and EU markets are served	UKCA declaration and supporting technical documentation
North America (US / Canada)	API product standards, ASME B16.34 design, CRN registration in some Canadian provinces	API 6D, API 608, API 600 and API 602 products, ASME-compliant design, CRN documentation support	API certification records, ASME design data, CRN submission support
Gulf and Middle East	API-certified products, operator vendor listing, SASO / G-mark where applicable	API certified products, vendor-listing support, NACE MR0175 sour service materials, third-party inspection	API certificates, NACE material records, TPI reports
Russia and CIS	EAC / TR CU conformity for customs union entry	EAC conforming products and documentation for the customs union market	EAC certificates and technical passports
Latin America	Local conformity where regulated (for example INMETRO in Brazil), plus full project documentation	Project documentation packages, third-party inspection coordination, translated labelling on request	Conformity support documentation, TPI reports, translated labels
Australia and Asia-Pacific	Project specifications, water authority approvals for potable service, AS alignment	AS-aligned design review, potable-water material options, complete project documentation	Material and coating certificates, potable-water compliant material records

Certification scope varies by product, size and market. We confirm in writing which certificates apply to your specific product and destination before you order - we never assume an approval covers a product it does not.

Private-Label Brand Kit

Everything You Need to Launch and Defend Your Own Brand

A private-label programme fails if only the valve is branded. We supply the whole commercial surface of the product - marking, packing, datasheets and imagery - so your brand looks established from the first shipment.

Your brand, applied consistently

Nameplate, Marking and Tagging

Customer nameplates, cast or laser-etched logos, tag plates and valve tagging per your artwork - applied identically on every batch so your brand looks the same on the thousandth valve as it did on the first.

Laser, etched or cast nameplate options

Tag plates and valve tagging per project

Marking artwork approved before production

Batch-to-batch marking consistency

No J-VALVES branding

Neutral Packing and Shipping Marks

Export cartons, pallets and labels carry your branding or none at all. Your customers never see our factory name, and your channel structure - and your margins - stay intact.

Neutral cartons, pallets and labels

Your labels, manuals and inserts

Container loading plan before shipment

Seaworthy and long-storage packing options

PDF under your logo

Brand-Ready Data Sheets and Drawings

Product data sheets, dimension drawings and installation manuals prepared under your brand identity in your document layout, ready to hand to your own customers, consultants and approving engineers.

Data sheets in your template

Dimension and installation drawings

Editable source files handed over

Updated whenever the product changes

Sales enablement

Product Imagery and Catalogue

Product photography and catalogue layouts of the valves carrying your brand, so your sales team can present a complete, professional range without commissioning a photoshoot or waiting for a marketing budget.

Branded product photography on request

Catalogue layout support

Imagery cleared for your channels

Reference material prepared for tenders

Catalogue architecture

Range Planning and Rationalisation

We help you decide which sizes, pressure classes and valve types to launch first, where to standardise to cut inventory, and how to extend the range without fragmenting your catalogue.

Launch range recommendation

Size and class rationalisation

Standardisation to reduce stock

Roadmap for range extension

From trial batch to serial

Launch Stock and Lead Time

Start with a trial batch to prove quality, then move to serial production with a confirmed lead time and, for distributor programmes, agreed safety stock so your launch is never held up by supply.

Trial batch to qualify quality

Serial lead times confirmed in writing

Safety stock for distributor programmes

Priority slots during peak season

SELECTION GUIDE

Private-Label Product Portfolio

The valve families available for OEM, ODM and private-label programmes, with the size and pressure range each covers. Use this to plan a coherent catalogue rather than a list of one-off items.

Category	Size Range	Pressure Class	Temperature Range	Standards & Best For
Trunnion Mounted Ball Valve	2"-56" (DN50-DN1500)	Class 150-2500 (PN20-PN420)	-29°C to +425°C; metal seat to 650°C	API 6D, ASME B16.34, API 607 · High pressure, large bore, pipeline and manifold service
Floating Ball Valve	1/2"-8" (DN15-DN200)	Class 150-2500 (PN20-PN420)	-29°C to +250°C (seat dependent)	API 608, ASME B16.34 · Small-medium bore, tight shutoff, cost-sensitive lines
Fully Welded Ball Valve	2"-56" (DN50-DN1400)	Class 150-2500 (PN20-PN420)	-29°C to +425°C	API 6D, ASME B16.25 ends · Buried pipelines, district heating, gas transmission
DBB Ball Valve	1/2"-56" (DN15-DN1500)	Class 150-2500 (PN20-PN420)	-29°C to +425°C	API 6D, API 608 · Double block and bleed, instrument and manifold isolation
Ultra-low Temperature Ball Valve	1/2"-56" (DN15-DN1500)	Class 150-2500 (PN20-PN420)	-196°C to +180°C	ISO 28921-1, API 6D · LNG, liquid nitrogen, oxygen and cryogenic service
Three-way & Four-way Ball Valve	1/2"-36" (DN15-DN800)	Class 150-2500 (PN20-PN420)	-29°C to +250°C	API 608, ASME B16.34 · Mixing, diverting and flow distribution
High-temperature Ball Valve	1/2"-56" (DN15-DN1500)	Class 150-2500	up to 650°C	ASME B16.34 · Furnace, thermal oil and hot gas service
High-pressure Ball Valve	1/2"~30"(DN15~DN750)	2500Lb（PN420）	-29°C to +425°C	API 608, ASME B16.34 · Injection, hydraulic and ultra-high pressure process
Metal-seated Ball Valve	1/2"-56" (DN15-DN1500)	Class 150-2500	-29°C to 650°C	API 608, API 607 · Abrasive, high-temperature and sever service

Applications

Who We Manufacture For

Private label · own brand

Valve Brands and Brand Owners

Established valve brands and new entrants who want their own product line without building a factory. We manufacture under your nameplate with your marking and neutral packing, and your customers only ever see your brand.

Private-label and white-label production

Your nameplate, logo and packing

Brand-ready data sheets and drawings

Consistent marking across repeat batches

Catalogue · stock programme

Distributors and Importers

Distributors building a catalogue need a supplier who can hold a product list, keep lead times predictable and protect pricing across the season. We support stock programmes with agreed product lists and priority production slots.

Agreed product list and safety stock

Stable pricing windows

Priority slots in peak season

Territory and product-line discussion available

Project package · TPI

EPC Contractors

Project procurement teams need documentation that passes document control and valves that arrive when the site needs them. We work to your specification, issue deviations before the order, and coordinate third-party inspection.

Specification and written deviation review

ITP with witness and hold points

Coordinated TPI (BV, SGS, TUV)

Project packing and site delivery

Component supply

OEM Machine and Skid Builders

Equipment builders who need valves as components to a fixed interface, with dimensional repeatability and a stable supply schedule so the assembly line is never waiting on a valve.

Valves to your interface and envelope

Dimensional repeatability batch to batch

Scheduled call-off deliveries

Actuator and instrument interfacing

Discreet supply channel

Valve Traders and Sourcing Agents

Traders who sell into their own markets need a manufacturing partner who stays behind the scenes, quotes competitively and never approaches their accounts - a genuine white-label supply channel rather than a competitor in disguise.

Neutral packing, no factory branding

Discreet and documented supply

Competitive factory-direct pricing

No direct approach to your customers

Installed base · spares

Multinational End-Users and MRO

Plant and maintenance buyers at multinational operations need documented valves and a spare-parts path for the installed base. We support MRO supply with traceable materials, repeatable product data and reconditioning.

Documented, fully traceable valves

Spare parts and reconditioning service

Repeatable product data for the installed base

Materials and coatings to plant specification

EPC Contractors

Ball Valve Solutions for EPC Contractors: Documentation, Deviations and Third-Party Inspection Support

On an EPC project the valves are rarely the problem - the paperwork is. A technically correct valve that arrives without the certificate format your document control system requires is, from the project's point of view, a late valve. That is why we treat documentation, deviation management and third-party inspection as part of the product itself, not as an afterthought added at shipping time.

Our EPC support is organised around the three stages where valve packages usually fail: before the order, when compliance is still negotiable; during production, when the ITP is either followed or ignored; and at inspection, when evidence is either complete or missing. Each stage has a named deliverable, a fixed format and a responsible engineer - so your project team and ours work to the same checkpoints.

To scope a package properly we need five things from your team: the valve list with data sheets or tag numbers, the project specification and its revision number, your document control format, the third-party inspection agency together with the witness milestones, and the site delivery window. Send those five items and you will receive a compliance and deviation list, a draft ITP and a price that already includes the agreed testing and inspection scope - not a low offer that grows on the way to delivery.

Three Things That Decide an EPC Valve Package

Documentation, Deviations and Inspection - Handled as One System

ITP · EN 10204 3.1 · one index per order

Documentation Built for Document Control

Every EPC order is issued against an agreed documentation format - not our house style. Certificates, test reports and NDE records are compiled into a single document index per order, so your document control team receives a package it can register, verify and close without chasing missing pages.

Documentation format agreed before production starts

ITP with witness and hold points

EN 10204 3.1 or 3.2 material certificates

Hydrostatic, seat, torque and NDE reports

Declaration of conformity and CE documentation

Compliance matrix · 2-5 working days

Deviations Written Before the Order

We review your valve specification line by line and return a written compliance and deviation list before order confirmation - where we comply, where we propose an alternative, and what the alternative means for performance, price and delivery. Deviations are approved by your engineer, not discovered by your inspector.

Line-by-line compliance matrix against your specification

Deviations proposed with alternatives and impact

Response within 2-5 working days

Any post-order change documented as a revision

No surprises at the document verification stage

BV · SGS · TUV · customer inspectors

Third-Party Inspection Without the Drama

Witness and hold points are written into the ITP and inspection windows are booked with the agency before production starts, so witnessed testing never becomes the reason a shipment slips. Your inspectors are welcome in the plant at any stage, and remote witnessing with full photo and video records is available where travel is not practical.

Witness and hold points agreed in the ITP

Inspection windows planned with the agency in advance

BV, SGS, TUV or your own inspector

Remote witnessing with photo and video records

Test records linked to valve serial numbers

Project Phases

EPC Valve Package: What We Deliver at Each Project Phase

Each phase ends with a defined deliverable, so progress is measured in documents your project team can actually verify - not in promises.

Project phase	What J-VALVES delivers	The document you receive
Enquiry and quotation	Line-by-line compliance review of the valve specification, technical query list, priced proposal including the agreed testing scope	Compliance matrix and written deviation list
Order confirmation	Capacity reservation, documentation format agreement and draft ITP issued for your approval	Order acknowledgement with the agreed document index
Manufacturing	Material procurement against the approved supplier list, machining and assembly with in-process inspection	In-process inspection records and dimensional reports
Testing	Shell and seat testing, torque measurement, NDE performed by certified personnel	Hydro and seat test reports, NDE reports, torque records
Coating and marking	Blasting, painting or FBE with DFT and holiday testing, marking to the project marking specification	Coating inspection report and marking verification sheet
Witness inspection	Third-party or customer witness testing at the agreed hold points	Witnessed test records and inspection release note
Shipment and close-out	Final visual inspection, packing to the project packing specification, compilation of the complete package	Packing list, shipping documents and the final documentation package

Engineering

Why Multinational Buyers Choose J-VALVES

Manufacturing, Not Trading

We own two production plants in Wenzhou and Lishui and make the valves ourselves - bodies, balls, stems, assembly, testing and coating under one quality system. You deal with the factory that controls its own process, not a trader who forwards your order and hopes.

Documentation Your QA Team Accepts

ITP with witness and hold points, EN 10204 3.1 or 3.2 material certificates, dimensional, NDE, pressure and coating reports - compiled in the format your document control system expects, so verification does not turn into a second project.

One Engineer for the Whole Programme

Your programme is run by the engineer who reviewed your specification, not a rotating sales desk. The same person answers the technical question in year three as in week one - which is what keeps a long-term OEM relationship stable.

Technical Detail

Manufacturing Capability and Control Points

What brand owners and EPC procurement teams usually want to verify before placing a programme - and the answer we can document.

Item	What we do
Machining capability	CNC machining centres for bodies, balls and stems with dimensional inspection at defined stages, records linked to the valve serial number
Welding and fabrication	WPS / PQR and welder qualification records per ASME IX, controlled heat input for fully welded and clad components, NDE on welds as specified
Testing capability	Hydrostatic testing up to 30 inch Class 2500, seat testing to API 598 / API 6D, torque measurement, cryogenic testing to -196°C in our own laboratory
Material verification	Physical and chemical laboratory performing PMI, hardness and mechanical verification, with heat-number traceability to EN 10204 3.1 or 3.2 certificates
Coating and marking	Blast preparation, FBE, epoxy and marine paint systems with DFT and holiday testing, plus customer nameplate, tag plate and laser marking to approved artwork
Documentation control	Single document index per order, ITP with witness and hold points, records compiled in the format required by your project document control system
Change control	Any change to material, marking, testing scope or quantity is documented as a drawing or specification revision, priced and scheduled in writing before it is implemented
Capacity planning	Production capacity reserved at order acknowledgement, with weekly status reporting on request so your sales and project teams can plan against a real date

Commercial Terms

Commercial Terms at a Glance

Western procurement teams are asked to justify a supplier internally. These are the terms you will be asked about - stated up front instead of discovered at contract stage.

Commercial point	Our standard position
Minimum order quantity	OEM and private-label programmes can start from a trial batch so you qualify our quality before committing to volume. Exact MOQ depends on valve type and size and is confirmed with the quotation.
Lead time	Standard floating and trunnion ball valves typically 4-8 weeks; fully welded and custom-engineered valves 8-16 weeks after drawing approval, depending on size, class and testing scope.
Payment terms	Flexible terms for repeat customers, including partial advance with balance against shipping documents. Letters of credit and other instruments are accepted where the order or market requires them.
Incoterms	FOB, CIF, CFR and DAP / DDP quoted on request so you can compare landed cost. Packing, marking and documentation are prepared for the term you choose.
Price validity and currency	Every quotation states a price validity period. USD and EUR are the usual currencies, others on request, and repeat-programme prices are held stable for the agreed window.
Tooling and design ownership	Tooling, patterns and drawings paid for by the customer remain the customer's property. Where we develop the ODM base design, ownership stays with J-VALVES unless bought out - stated in writing before the programme starts.
Samples	Pre-production samples and first-article inspections are available so you can test and approve before serial production. Sample cost and lead time are confirmed with the quotation.
Exclusivity	For distributor and brand programmes, territory and product-line exclusivity is discussed case by case and, where agreed, written into the supply agreement rather than left to assumption.

Warranty & After-Sales

What Happens After the Container Ships

A supplier is judged by what it does when something goes wrong, not by what its brochure promises. This is our position on warranty, claims and long-term support - in writing, before you order.

12 months standard · 24 for OEM

Warranty

Our standard warranty covers manufacturing defects for 12 months from delivery, extended to 24 months for OEM and private-label programmes where the agreed terms require it. The warranty is stated in the order acknowledgement rather than buried in general terms and conditions.

12 months standard, 24 months for OEM programmes

Defined start point: delivery or installation

Written into the order acknowledgement

Covers materials and workmanship

Structured, not improvised

Claims Process

A claim is handled as a documented process, not a negotiation. We review the failure with you, identify the root cause together with our quality and engineering teams, and respond with a corrective action - replacement, credit or technical remedy.

Single named point of contact for claims

Root-cause analysis with our engineering team

Corrective action agreed in writing

8D-style response available for OEM programmes

For the life of the programme

Spare Parts and Reconditioning

Seat and seal kits, stems, balls and actuator spares are available for the life of your programme, with reconditioning and re-testing for larger valves - so the installed base you sold keeps running and keeps your brand's reputation intact.

Seat, seal and stem spare kits

Actuator and mounting spares

Reconditioning and re-testing service

Spares list supplied with the original order

An engineer, not a call centre

Technical Support After Delivery

Installation queries, actuator sizing, storage advice and troubleshooting are answered by the same engineering team that built your valves - the people who know your programme, not a generic inbox.

Direct access to your project engineer

Actuator sizing and interfacing support

Storage, installation and commissioning advice

Remote troubleshooting with photos and video

Buyer's Checklist

How to Vet a Ball Valve Manufacturer in China

Whether you choose J-VALVES or someone else, use this list. It is what separates a factory you can build a brand on from one that will cost you a recall.

Confirm they manufacture rather than trade - ask for a live video walkthrough of the production line, not a catalogue

Ask for the API licence, ISO certificates and the current scope, then verify the certificate numbers with the issuing body

Request EN 10204 3.1 material certificates from a recent order and check that heat-number traceability is real, not generic

Ask how shell and seat testing is performed, at what pressure multiple, and where the records are filed

Check whether they own a pressure test bench, a cryogenic laboratory and a material laboratory, or outsource testing

Request a witness or hold point in the ITP and see whether they accept third-party inspection without hesitation

Ask for two references in your market or your industry - and actually call them

Review their deviation-list practice: a serious factory writes down where it does not comply before the order, not after

Ask who owns the drawings and the tooling, and get the answer in writing before you share your design

Test responsiveness: how quickly and how precisely do they answer a technical question, in English, without escalating

Project Experience

OEM, ODM and EPC Programme Experience

The reference cases below follow our project-record structure. Replace or extend with current data before publishing.

Private label · repeat programme

Private-label ball valve programme for a European valve brand

Challenge

A brand owner needed a reliable second source for floating and trunnion ball valves without revealing its customer base, and could not accept marking that drifted between batches.

Solution

NDA-backed OEM programme with customer nameplates and neutral packing, a locked material and supplier list to keep batches identical, and a trial batch followed by first-article inspection before serial production.

Result

Serial production established with consistent marking and material certificates per batch; repeat orders follow the same approved drawing and material baseline.

ODM · design and validate

ODM development of a branded trunnion valve for a distributor

Challenge

A distributor wanted its own branded trunnion ball valve for a specific pressure class, with no design of its own and a requirement to show its customers a credible technical datasheet.

Solution

Our engineers adapted an existing trunnion platform, produced 3D and 2D drawings for approval, built a prototype for functional and pressure testing, and released brand-ready datasheets under the customer's identity.

Result

The customer launched its own branded range with documented performance data, without funding a design department or a tooling programme of its own.

EPC package · TPI · document control

Ball valve package for an EPC contractor with third-party inspection

Challenge

The project specification required documented compliance, witness testing and a single documentation format across a mixed valve list, with a fixed site delivery window.

Solution

Specification review with a written deviation list before order confirmation, ITP with hold points, EN 10204 3.1 certificates, coordinated BV witness testing, and packing marked to the project packing specification.

Result

Documentation accepted at first review; witness testing completed on schedule and valves delivered to site within the agreed window.

Custom engineered · large bore

Custom 56-inch fully welded ball valves for a transmission project

Challenge

Large-bore welded valves required dimensional control, weld quality documentation and coating performance matched to buried service conditions.

Solution

Engineering review and drawing approval before production, controlled welding with WPS / PQR records, NDE on welds, coating with DFT and holiday testing, and hydrostatic testing with witnessed records.

Result

Delivered with complete weld, NDE, pressure and coating documentation accepted by the contractor's QA team.

Risk Control

Supply Risks in OEM and ODM Programmes - and How We Control Them

Risk you are taking	Typical root cause	How J-VALVES controls it
Brand inconsistency between batches	Material or supplier changes between production runs	Locked material and supplier list per OEM programme, drawing revision control, and marking and nameplate specification frozen at approval
Documentation rejected at verification	Certificates issued in a format the project's document control system cannot accept	Documentation format agreed before production, ITP and MTC templates reviewed with the contractor, single document index per order
Delivery slippage against a project schedule	Capacity booked late, or testing scope underestimated at quotation	Capacity reserved at order acknowledgement, testing scope defined in the quotation, weekly production status reporting on request
Your design leaking to another customer	Drawings or tooling shared across accounts	NDA before drawing release, separated drawing storage, restricted workshop access and no reuse of customer-specific designs
Witnessed testing delaying shipment	Inspector scheduling conflicts at short notice	Testing windows planned with the third-party agency in advance, with photo and video records where remote witnessing is agreed
Hidden cost of non-compliance	Specification deviations discovered after delivery	Written deviation list before order confirmation, with alternatives and impact stated, approved by your engineering team
Currency and price exposure on repeat orders	Exchange movement or raw material swings between campaigns	Price validity periods stated on every quotation and stable pricing windows agreed for repeat programmes
Single-source supply risk	One factory, one line, one country	Two independent plants and qualified sub-suppliers for critical components, so a disruption in one does not stop your supply

Quality

The Quality System You Can Audit

OEM and ODM customers can audit our plants against this scope, or request the records directly for vendor qualification.

01 Supplier & Material Control

Approved supplier list per material grade, incoming inspection with PMI and mechanical verification, heat-number traceability to EN 10204 3.1 certificates.

02 Drawings & Process Documents

Drawing revision control, WPS / PQR and welder qualification records per ASME IX, machining programmes released against approved drawings only.

03 Machining & Assembly Inspection

In-process dimensional inspection at defined stages, assembly checks on seat alignment and stem torque, antistatic continuity verification.

04 Pressure & Functional Testing

Shell test at 1.5x and seat test at 1.1x rated pressure per API 598 / API 6D, plus actuator functional testing when supplied as an assembly.

05 Non-Destructive Testing

RT, UT, MT and PT performed by certified personnel (ASNT Level II or equivalent) with reports included in the documentation package.

06 Coating & Marking

Coating DFT and holiday testing, nameplate and marking verification against the approved artwork or project marking specification.

07 Third-Party Witness

BV, SGS, TUV or customer inspectors attend witness and hold points; inspection schedules are coordinated before production starts.

08 Final Factory Inspection & Document Package

Final visual inspection, packing verification, and compilation of the complete documentation package in the agreed format.

J-VALVES CNC machining workshop for ball valve bodies and balls

CNC machining workshop - ball valve bodies and balls

Fully welded ball valve production line

Hydraulic pressure test bench for valves up to Class 2500

Hydraulic pressure test bench up to Class 2500

Physical and chemical laboratory for PMI and material verification

Physical & chemical laboratory - PMI and material verification

Extended bonnet cryogenic ball valve under -196°C testing in the J-VALVES low-temperature laboratory, Wenzhou plant

Low-temperature laboratory testing to -196°C

Standards

Standards, Certificates and Qualifications

API 6D / API 608 / API 600 / API 602 — Product design and testing standards covering the pipeline, process and gate/globe/check valve families manufactured in our two plants.

API 607 / API 6FA — Fire-safe type testing for quarter-turn valves - required by many hydrocarbon and safety-related OEM programmes.

ISO 15848-1 — Fugitive emission qualification with the class and temperature range stated on the certificate - increasingly requested in OEM specifications for VOC and gas service.

ISO 9001 / ISO 14001 / ISO 45001 — Quality, environmental and occupational health and safety management systems audited across both plants.

CE / SIL / EAC — European conformity, functional safety capability for safety instrumented functions, and Eurasian conformity for CIS markets.

EN 10204 3.1 / 3.2 — Material certificates issued by our inspection department, or 3.2 with a third-party inspector when the project requires it.

ASME IX / ASNT — Welding procedure and personnel qualification records, and NDE personnel certification, available for vendor audits.

ISO 5211 / ISO 28921-1 — Actuator mounting interface standard and the cryogenic ball valve design reference used for LNG and low-temperature private-label products.

Customer supplier codes of conduct — We review and accept customer supplier codes of conduct covering labour standards, environment, health and safety, and business ethics, and provide the declarations multinational procurement teams require.

Deliverables

Documentation Package for OEM, ODM and EPC Orders

Approved drawings (2D PDF, 3D STEP on request)

ITP with witness and hold points

EN 10204 3.1 or 3.2 material certificates

Dimensional inspection report

Weld procedure and NDE reports

Hydrostatic and seat test reports

Torque and actuator functional test records

Coating inspection report

Nameplate and marking verification sheet

Declaration of conformity / CE documentation

First-article inspection report (on request)

Packing list and shipping documents

Technical Support

Talk to the Engineer Who Will Run Your Programme

OEM, ODM and EPC enquiries are handled directly by our project engineer and sales manager - the same person who will run your programme. Send your valve list, specification or drawing set under NDA and you will receive a technical and commercial response with a compliance and deviation list, usually within 24 hours on working days.

NDA signed before drawings are shared

Compliance and deviation list before quotation

Trial batch to qualify quality before serial production

Vendor audit and third-party inspection welcomed

Two plants in Wenzhou, API 6D / API 607 / ISO 9001 certified

J-VALVES engineers checking large trunnion ball valves with actuators during an OEM batch inspection before dispatch

FAQ

OEM, ODM and Private-Label FAQ

What is the difference between OEM, ODM and private label?

OEM means we manufacture to your design or specification - you own the design and we build to print. ODM means we develop or adapt the design ourselves and you take it to market under your brand. Private label means our standard series produced with your nameplate, marking and packing. Many customers start with private label, then move to ODM as their range grows, and add OEM where they have their own engineering.

Do you offer OEM and private-label ball valve manufacturing?

Which certifications do we need to sell your valves in our market?

How do you support EPC contractors on valve packages?

What is the MOQ and lead time for OEM orders?

Will you sign an NDA and protect our designs?

Can we audit your factory before placing an order?

Do you sign supplier codes of conduct and sustainability requirements?

What documentation do you provide for project submissions?

Can you manufacture to our own drawings and brand marking?

How do you handle changes after order confirmation?

Get a Factory Quote

Send your specification, valve list or drawing set - technical proposal and quotation within 24 hours on working days.

Contact J-VALVES

Related applications:

FPSO & Offshore Ball Valves

Oil & Gas / Refining Ball Valves

LNG & Cryogenic Ball Valves

FBE Desalination & Water Ball Valves