• Integral Three-Way Structure: A single valve body integrates three flanged ports to realize medium diversion, mixing, or flow direction switching. It replaces the traditional combination of two-way valves and three-way fittings, reducing potential leakage points, saving installation space and costs.

• Floating Ball Design: The ball floats freely under medium pressure and fits tightly against the seats to form a reliable seal. Featuring a simple structure, quick opening and closing, and low operating torque, it is suitable for medium and low-pressure applications.

• Flanged Connection: Adopts RF (Raised Face) flanged connection in compliance with ASME B16.5 / DIN EN 1092-1 standards, facilitating integration with existing piping systems and supporting online maintenance.

• Dual-Seat Sealing: Each sealing position is equipped with an independent seat. The bidirectional sealing design ensures reliable isolation between ports, with a leakage rate up to ANSI/FCI 70-2 Class VI (bubble-tight).

• Fire-Safe Design: Complies with API 607 standards. In the event of soft seat burnout, the metal seats contact the ball to form a metallic seal, preventing medium leakage during fire incidents.

• Anti-Static Device: Built-in anti-static spring ensures effective discharge of static electricity between the ball, stem and valve body, preventing sparks caused by static accumulation.

• Blowout-Proof Stem Design: Bottom-entry stem is furnished with an anti-blowout shoulder. Even if the packing gland is accidentally removed, the stem remains retained by the valve body, ensuring operational safety.

• Compact Design: Compared with multi-valve assembly solutions, volume is reduced by 40%–60% and weight by 30%–50%, significantly lowering pipeline support loads and installation space requirements

Three Way Flanged Floating Ball Valve 3D Diagram

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

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

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

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.

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.