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Home Products Pneumatic Flanged Trunnion Ball Valve Full Bore Low Resistance

CHINA J-VALVES Offers Various High-quality I ndustrial Ball Valves

J-VALVES, a distinguished professional ball valve manufacturer rooted in China, takes pride in its extensive product portfolio. Our offerings span a wide range, including trunnion-mounted ball valves, floating ball valves, high-temperature ball valves, high-pressure ball valves, metal-sealed ball valves, ultra-low temperature ball valves, DBB ball valves, Three-way And Four-way Ball Valve, and fully welded ball valves. Each product is a testament to our commitment to precision engineering and reliable performance. Meticulously crafted, they are designed to not only meet but exceed the most stringent industrial demands, ensuring stable operation even under extreme conditions. This enables us to provide our clients with high-value services and makes our valves widely sought-after in industries.

Pneumatic Flanged Trunnion Ball Valve Full Bore Low Resistance
Pneumatic Flanged Trunnion Ball Valve Full Bore Low Resistance
Size Range: 2″ ~ 56″ (DN50 ~ DN1400)
Pressure Class: Class 150 ~ Class 2500 (PN20 ~ PN420)
Temperature Range: -46℃ ~ +200℃ (Standard Type); Optional low-temperature type -196℃ or high-temperature type +425℃
Materials:
Valve Body: ASTM A105 / A350 LF2 / A182 F304 / F316 / A694 F65
Ball: ASTM A105 + ENP (Electroless Nickel Plating, thickness ≥50μm) or stainless steel hardfacing STL / Tungsten Carbide
Valve Stem: ASTM A182 F6a / F316 / F51 (Duplex Steel) with surface hardening treatment
Valve Seat: RPTFE / Nylon / PEEK / Metal Hard Seal (STL Hardfacing)
Sealing Material: Flexible Graphite / Metal Ring Gasket / Lip Seal
Connection Type: Flange Connection (RF / RTJ), compliant with ASME B16.5
Operation Mode: Pneumatic drive (Double-Acting / Single-Acting Spring Return)
Air Supply Pressure: 0.4 MPa ~ 0.7 MPa (Standard); Optional 1.0 MPa high-pressure air source
Design Standards: API 6D, ASME B16.34, ISO 14313
Test Standards: API 6D, API 598, ISO 5208
Face-to-Face Dimension: Compliant with API 6D / ASME B16.10
Flow Resistance Coefficient: Kv value close to straight pipe of the same specification; Pressure drop loss ＜ 0.01 bar at full open condition
Actuator Standard: ISO 5211, API 6D actuator mounting specification
Operating Time: Double-acting: adjustable from 3s to 120s; Single-acting emergency shutoff ≤ 5s
Safety Integrity Level: Optional SIL 2 / SIL 3 certification (IEC 61508 / IEC 61511)

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  • Full Bore Design: The bore diameter of the ball is identical to the pipeline inner diameter. Its flow resistance coefficient Kv is close to that of a straight pipe with extremely low pressure drop loss, maximizing flow capacity, significantly improving pipeline transportation efficiency and reducing energy consumption of pump stations.

  • Trunnion Mounted Structure: The ball is connected to the valve body via upper and lower trunnion shafts. Sliding bearings and thrust bearings withstand the huge thrust generated by medium pressure. The operating torque is not affected by pressure differential or nominal size, ensuring low-torque operation for large-bore full bore valves.

  • Pneumatic Actuator: Equipped with high-performance rack-and-pinion or Scotch Yoke pneumatic actuators, featuring high output torque and fast action speed. Available in double-acting and single-acting spring return types to realize remote automatic control and emergency shutoff of the valve.

  • Low Flow Resistance Seat Design: The valve seat adopts a streamlined transition structure with smooth flow passage without sudden changes, eliminating turbulence and vortex flow to further reduce flow resistance and noise.

  • Flange Connection: Adopts RF (Raised Face) or RTJ (Ring Type Joint) flange connection in compliance with ASME B16.5 standard, ensuring installation reliability and sealing performance under high-pressure working conditions.

  • Dual Piston Effect (DPE) Seat: The seat is designed with dual piston effect, achieving reliable bidirectional sealing regardless of medium flow direction and supporting DBB (Double Block and Bleed) function.

  • Anti-Static Device: Built-in anti-static springs and grounding device ensure the resistance between the ball, stem and valve body is less than 10Ω, eliminating static accumulation risks and suitable for flammable and explosive media.

  • Anti-Blowout Stem Design: The valve stem adopts an integrally forged anti-blowout structure with multiple seals, preventing stem ejection under abnormal pressure conditions and ensuring operational safety.

  • Fire Safe Design: Compliant with API 6FA / API 607 standards. The secondary metal sealing structure maintains sealing performance even in fire scenarios and prevents secondary disasters caused by medium leakage.

  • Emergency Sealant Injection System: API 6D standard grease injection valves are arranged at the seat and stem positions. Sealant can be injected in emergency situations to achieve temporary sealing and leakage repair.

  • Spring Return Safety Function: The actuator is optional with single-acting spring return type, which automatically fails open (FO) or fails closed (FC) when air supply fails to guarantee system safety.

  • Position Feedback & Monitoring: Standard mechanical valve position indicator; limit switches, valve position transmitters and solenoid valves are optional to realize remote status monitoring and interlock control.

  • 2-3 piece body

  • Full andreduced bore trunnionmounted

  • Double block and bleed

  • Single or double piston effect design anti-blow out stem

  • Anti-static device

  • Firesafe to AP1-607/6FA/1S0 10497 springloaded seats

  • Sealant in jection on request NACE MR-01-75

  • API Licenses:

    API6D

    API6DSS

    API6A-PSL4

  • Pressure Class:

    ASME 150-2500

    API 2000-15000

  • Service Type:

    Standard Temperature:-29℃ to 220℃/-20°F to 428°F

    Low Temperature:-46℃ to 150℃/-50°F to 302°F

    Cryogenic Temperature: -47℃ to -196℃/-52°F to-320°F

    Subsea(Shallow &Deep Water)

    Underground

    High Temperature:Above 220℃/428°F


J-VALVESSPE can supply a range ofseat types and configurationsto meet specific process needs:

J-VALVES trunnion mounted ball valves standard seat ringsare soft-seated by the use of athermoplastic or elastomeric or Meta

Seats-Tungsten /Chrome carbide /ENP

6

Single Piston (SPE) , Double Piston effect (DPE) and Combination (SPE x DPE) seats are available.


7

Seat Princlple

Two independent seat rings grant the sealing, barrieragainst the line pressure actingon the upstream and downstreamsides of the valve which allows the valve tobe bidirectional.


A set ofcoil springs acting, between the upstream side ofeach seatring,andthe body,generate an uniform thrust on theseat which push the same against the ball and grant the sealingfeature with no orverylow pressureinthe line,when the line pressure increasethe thrust actingon theseat increases proportionally and the sealing leatureis granted throughout the fullpressure range.


The J-VALVES SPE trunnion mounted ball valves are available with Double

Block & Bleed in dependent oftheseat type.


Valve seating variations

Seat DesignSingle piston effect (SPE)Double piston effect(DPE)-DIB 1Combined DIB 2
Bi-directional
sealing		YesYesYes
Body-Cavity
Self relieving		YesNoYes
Double BarrierNoYesYes (preferred direction only)
8Single Piston Effect

Single piston effect (SPE) is the stand ard feature for theseat rings of the 

J-VALVES SPE trunnion mounted ball valves.


On a SPE seat ring:

The pressure ac tingon the upstream side ofthe seat ringgenerates aforce which push theseattowards the ball.The pressure actingon the downstream side ofthe seatring generates a force which pull theseatring away fromthe ball.


Anyoverpressure which may be generated by the thermal expansion of the fluid trapped in thebodycavity with the ballin fully closed position, will beautomatically dischargedinthe line on the lower pressure side.


9

Double Piston Effect

Double piston effect(DPE) is a stand ard feature fortheseat rings ofthe 

J-VALVES trunnion mounted ball valves & recommended forwelded body valves. Ona DPE seat ring, both the pressure acting on the upstream sideof theseatring andthe pressure acting on thedownstreamside of the  seatring, generatea forcewhich push the seattowards the ball.


With th is type ofseat ring,the eventual over press ure whichmay be generated by the thermal expansion ofthe fluidtrappedinthebodyeavitywith theball in fullyclosed position,can be discharged by the use of:

An external safetyrelief device.

The Double Piston Effect grants a double sealingfeature,iftheupstreamseat ringisdamaged, thedown stream seatgrant the sealingfeature of the valve.


10

Stem

  • The stem is independent from the ballandis not subject to theside load generated by the line pressure acting on the ball. 

  • Two O-Rings and agraphite gasket grant a triple barrierand thefire safe sealing on the stem.

  • Abuilt instemsealant injectionsystemis provided as

    a standardfeature.

  • The standard antIblow-out eature ofthe stemis

    inaccrdance to API6D and is granted by the bodvcover. By removing the gland bushing the upper stem gasket can be replaced for

    maintenance with thevalve in service.

11

Ball

  • Inside entry valves 4" and smaller the ball is kept in position by an upper and alower trunnion,housed

    in the primary body.

  • Inside entry valves 6" and larger the ballis kept in position by an upper and alower trunnion, housed

    in two bearing blocks

  • Both the trunnions absorb the side load generated by the line pressureacting on the ball,without affecting the rotation of the stem

  • Large diameter trunnions minimize the torque required to operatethe valve.

  • The trunnion srotateinto metalbacked

    self-lubricating bearings.


12

Emergency Seat Injection

Emergency grease in jection fitting forseat rings are standard for6" and larger valves and as option on sizes 2"-4".

An eedle valve, complete with non return check valve is screwed in the bodyand connected to theseatrings.

The emergency sealantinjection can temporarily solve leakage problems, seatsshall be re paired at the first opportunity.

For valves smaller than 6" seat sealant in jection fitting can beprovided in the body cavity

13

Body Vent & Drain

  • All J-VALVES SPE TMBV are complete with ascrewed NPT Plug, located in thelower side of the body completedraining of the body cavity.

  • For valves up to size 4"the drain and vent are combined in oneport.


14Double Block and Bleed

This feature permits to check the integrity of the seats without interfering withthe operation ofthe line andthe replacement of the upper stem seal with the valve inline. The body cavity can be drained and depressurized with the ball infully closed position, this feature which is available with all typeof seats(SPE,DPE or Combination) permits.

15

Extended Stem

Extended stem is supplied for Underground in stalla tion.

The stem seals arelocated inthe body Gland Plate.

The stem extension isnot affected by eventual stem seal failure.

16

Double Piston Effect

Extended bonnets are available for Cryogenic or high temperature service or special applications requiring this facility features.

18Low Emission Stem Sealing

J-VALVES SPE tandard stem sealing arrang ement offers Low Emission using a tri ple barrier arrangement certified to the latest lS0 15848 standard.

Anti-Blowout ProofStem

Stem is retained by the cover, the gland plate can beremovedwithvaweinfullyclosed position with the bodycavityvented toatmosphere. The upper stem Oring can be replaced formaintenance with valve in service

Anti-Static Device

All J-VALVES SPE Trunnion Mounted Ball Valves,areequippedwith an anti- static devicetoassurethetotalelectricalconductancebetween all metalparts of the valves.



19Fire Safe

All J-VALVES complete range of Side entry,Top Entryand Welded body ball valves are certifiedfire safe according to AP1607/1S0 10497 - API6 FA.


20

Valves Ends

Valves are available with:

Flan ged Ends (RF Or RTJ) tO ASME B16.5 0r ASME B16.47 Welding Ends to ASME B16.25Hub EndsCustomerspecific

Bore

Valve canbe supplied with Fullor Reducedbore in accordance with table lofAP| 6D,unless other wiserequired oradvised. Valveswith special Bore are available.

Face to Face/End to End

Dimensions are in accordance withAP| 6Dand ASME B16.10.Specialdimensions areavailable.


Painting

Standard external painting is Sky Blue Ral5015,and systemis suitable to protect thevalve external suraceduringtransportationandstorage.Othertypesofpaintingareavailableon request.

21Valve Transition Pieces

Transition pieces (pups), can be supplied forWeldingEnds Valwes to facilitate the welding ofthe valve totheline for:

Material compatibility.

Exces sive difference in strengthsand thickness betweenvalve closures and line pipe (limit is 1.5 times).

Avoiding damages to the valve soft seals.Important note: When transition pieces are supplied bythe customers, itisimperative to verifyif the strengthofthe same, suitable to undergothe hydro- test ofthevalve without damages ordeformations(1.5 times thevalve maximum rated pressure)


22

Welded overlays,with Stainless Steel, Duplexand Inconel are available on request for:

All wetted parts

Body wetted parts

Seat ringshousing pocket

Stem sealingarea

Balls

Types of Trunnion Ball Valves Available


2PC Flanged Trunnion Mounted Ball Valves, 3PC Side-Entry Flanged Trunnion Mounted Ball Valves, Metal-Seated Trunnion Mounted Ball Valves, Top-Entry Flanged Trunnion Mounted Ball Valves, High-Temperature Trunnion Mounted Ball Valves, High-Pressure Trunnion Mounted Ball Valves, Socket Weld (SW) Trunnion Mounted Ball Valves, Butt Weld (BW) Trunnion Mounted Ball Valves, Forged Trunnion Mounted Ball Valves, Cast Trunnion Mounted Ball Valves, Line Trunnion Mounted Ball Valves, Full Bore Trunnion Mounted Ball Valves, Reduced Bore Trunnion Mounted Ball Valves, Cryogenic Trunnion Mounted Ball Valves

Ball valve types.pdf


J-VALVES Ball Valves Size Data Sheet.pdf

J-VALVES Ball Valves Size Data Sheet(1)J-VALVES Ball Valves Size Data Sheet(2)J-VALVES Ball Valves Size Data Sheet(3)J-VALVES Ball Valves Size Data Sheet(4)J-VALVES Ball Valves Size Data Sheet(5)J-VALVES Ball Valves Size Data Sheet(6)

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