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Home Products Electric Fully Welded Trunnion Ball Valve

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.

Electric Fully Welded Trunnion Ball Valve
Electric Fully Welded Trunnion Ball Valve
Size Range: 2" ~ 60" (DN50 ~ DN1500)
Pressure Rating: 150LB ~ 2500LB (PN16 ~ PN420)
Temperature Range: -40℃ ~ +200℃ (high/low temperature models customizable)
Materials:
Valve Body: ASTM A105, A350 LF2, A182 F304/F316
Ball: ASTM A182 F304/F316 + Hardening Treatment
Valve Stem: ASTM A182 F304/F316, 17-4PH
Sealing Materials: PTFE, RPTFE, PEEK, Metal Seal
Connection Method: Butt Weld (BW), Socket Weld (SW)
Operation Mode: Electric (On-off/Regulating Type), Manual (Backup)
Design Standards: API 6D, ASME B16.34, ISO 14313
Testing Standards: API 598, API 6D, ISO 5208
Face-to-face Dimensions: API 6D, ASME B16.10

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  • Fully Welded Structure: The valve body adopts an integrated welded design without bolted connections, completely eliminating the risk of external leakage, featuring a compact structure and light weight.

  • Trunnion-mounted Ball Design: The ball is supported and fixed by upper and lower shafts, with medium pressure borne by bearings, which greatly reduces operating torque and ensures stability under high-pressure conditions.

  • Electric Actuator: Equipped with an intelligent electric actuator, it supports 4-20mA/0-10V control signals, and has local/remote operation, status feedback, and fault diagnosis functions.

  • Double Piston Effect Seat: It has Double Block and Bleed (DBB) function, achieving bidirectional sealing, and can safely release cavity pressure during online maintenance.

  • Welded Connection: Adopting Butt Weld (BW) or Socket Weld (SW) connection methods, it complies with ASME B16.25 standard and is suitable for underground or overhead installation.

  • Fire-safe Design: It complies with API 607 standard, with built-in metal auxiliary seals to maintain sealing integrity even in case of fire.

  • Anti-static Device: A conductive spring is installed between the valve stem and the valve body to ensure safe discharge of static electricity, meeting anti-static requirements.

  • Blowout-proof Stem Design: The valve stem adopts an integrated blowout-proof structure, combined with multiple seals to ensure operational safety under extreme working conditions.

  • Extended Stem Design: An extended stem can be optionally configured to facilitate ground operation during underground installation without the need to build a valve chamber.


  • 1 piece body

  • Full and reduced bore

  • Trunnion mounted

  • Double block and bleed

  • Single ordouble piston effect design anti-blow out stem

  • Anti-static device

  • Firesafe to API-607/6FA/ISO 10497

  • Springloaded seats

  • Sealantinjection 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

Electric Fully Welded Trunnion Ball Valve 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.


7Seat 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.


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.

    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.

    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


    Fully Welded Flanged Ball Valve， Fully Welded Ball Valve， Extended Stem Fully Welded Ball Valve， Underground Fully Welded Ball Valve， Natural Gas Fully Welded Ball Valve， Gas-Hydraulic Actuated Fully Welded Ball Valve， Floating Fully Welded Ball Valve， Trunnion Mounted Fully Welded Ball Valve， DIB-1 Fully Welded Ball Valve， Anti-Static Fully Welded Ball Valve， Fire-Safe Design Fully Welded 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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