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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.

Cryogenic Trunnion Mounted Ball Valves
Cryogenic Trunnion Mounted Ball Valves
Size range: 2" ~ 56" (DN50 ~ DN1400)
Pressure rating: 150LB ~ 2500LB (PN20 ~ PN420)
Temperature range: -196℃ ~ +120℃
Materials:
Valve body: LF2, LF3, 304, 316, 316L, F304, F316, F316L
Ball: 304, 316, 316L
Stem: 304, 316, Inconel 718
Valve seat seal: PCTFE, DEVLON V, PEEK
Stem seal: Low-temperature packing (e.g. PTFE + flexible graphite composite)
Connection type: Flanged (RF/RTJ), Welded end (BW/SW)
Operation mode: Manual (worm gear), Pneumatic, Electric, Hydraulic
Design standards: ASME B16.34, API 6D, ISO 14313, BS 6364
Testing standards: API 598, API 6D, ISO 5208, BS 6364
Face-to-face dimensions: ASME B16.10, API 6D

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Ball valves

  • Trunnion ball design: The ball is fixed and supported by upper and lower bearings, which reduces the medium pressure acting on the valve seat, significantly lowers the operating torque and extends the service life of the valve.

  • Extended stem structure: The extended stem design with heat insulation and dissipation fins effectively protects the upper sealing components and actuators from low-temperature impact to ensure normal operation.

  • Application of cryogenic materials: The valve body and internal parts are made of austenitic stainless steel (304/316/316L) or special low-temperature alloy steel, and undergo cryogenic treatment to ensure the toughness and strength of the materials at ultra-low temperatures.

  • Double piston effect valve seat: The valve seat with double piston effect realizes bidirectional sealing function and ensures zero leakage regardless of the medium flow direction.

  • Fire-safe design: Compliant with API 607/BS 6755 fire safety standards, it can maintain sealing performance even in fire accidents to prevent medium leakage.

  • Anti-static device: Built-in anti-static device maintains electrical continuity between the ball and the valve body, effectively preventing potential safety hazards caused by electrostatic accumulation.

  • Valve cavity pressure relief structure: Equipped with an automatic pressure relief device, which can automatically release abnormal pressure generated by medium temperature changes in the valve cavity to the upstream or downstream piping.

  • Low emission design: Adopting special sealing structures and materials, it meets the ISO 15848 low emission requirements and reduces medium leakage and environmental impact.

  • 2-3 piece body

  • Full andreduced bore trunnion mounted

  • Double block and bleed

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

  • Anti-static device

  • Firesafe to AP1-607/6FA/IS0 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


Cryogenic Trunnion Mounted Ball Valves Trunnion Mounted Features-seat Features

J-VALVES SPE 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)
8

Single 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.


9Double 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.


Cryogenic Trunnion Mounted Ball Valves Trunnion Mounted Features
14

Double 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.

18

Low 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.


19

Fire 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:

Flanged 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 tablel of API 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.


21

Valve 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


Cryogenic Flanged Floating Ball Valve, Cryogenic Threaded Floating Ball Valve, Cryogenic Welded Ball Valve, Cryogenic Top-Entry Ball Valve, Cryogenic Fully Welded Ball Valve, Cryogenic Trunnion Mounted Ball Valve, Cryogenic DBB Ball Valve, Cryogenic Cast Ball Valve, Cryogenic Forged Ball Valve, Cryogenic Side-Entry Ball Valve, Bi-Directional Sealing Cryogenic Ball Valve, Cryogenic Stainless Steel Ball Valve, Cryogenic Extended Stem Ball Valve, Fire-Safe Cryogenic Ball Valve

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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