• CF8 Stainless Steel Body:Constructed from precision-cast ASTM A351 CF8 (304) austenitic stainless steel, it offers excellent resistance to uniform corrosion and intergranular corrosion. With high surface finish, it meets general hygienic requirements and is suitable for water, steam, petroleum products and various chemical media.

• Double-Acting Type:Actuated by compressed air for opening and closing, featuring high torque and fast response, ideal for frequent cycling applications.

• Spring-Return Type:Automatically resets upon air failure (normally open or normally closed), suitable for safety shut-off and emergency isolation service.

• Pneumatic Modulating Type:Equipped with electro-pneumatic positioner to realize 4–20mA proportional control with a regulation accuracy of ±1%.

• Air Supply Requirement:0.4–0.7 MPa clean compressed air, supplied with filter regulator.

• Ingress Protection:IP67/IP68 rated, suitable for outdoor and harsh environments.

• 3-Way Flow Function:Integrates three ports in a single valve to achieve flow diversion, convergence or direction switching. It replaces conventional multi-valve assemblies, simplifies piping layout, and reduces potential leak points and installation space.

• L-Port Ball (90°):Enables flow switching between two ports, suitable for flow direction selection or on-off control.

• T-Port Ball (90°/120°):Permits flow division, mixing or connection between any two of the three ports, applicable for media blending, distribution or bypass control.

• European Standard Flanged Connection:Designed with DIN EN 1092-1 Type 11 B1 (raised face) flanged ends at PN16 pressure class. Fully compatible with European and global DIN-standard piping systems for high installation interchangeability.

• Bi-Directional Sealing Design:Independent seats are provided at each sealing position. Bi-directional sealing ensures reliable isolation between ports, with leakage class up to ANSI/FCI 70-2 Class VI (bubble-tight).

DN100 PN16 Pneumatic Three Way Ball Valve 3D Diagram

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

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

Seat Design	Single piston effect (SPE)	Double piston effect(DPE)-DIB 1	Combined DIB 2
Bi-directional sealing	Yes	Yes	Yes
Body-Cavity Self relieving	Yes	No	Yes
Double Barrier	No	Yes	Yes (preferred direction only)

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.