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Add: No.69, Xikang South Road, Dafeng Economic Development Zone, Yancheng City, Jiangsu Province
Mob: +8615068285212
Tel: +86-577-67354396
E-mail: sales@3dvalve.com
3 Piece Trunnion Ball Valve

3 Piece Trunnion Ball Valve

The three piece trunnion mounted ball valve has been designed three piece body type and with two floating seats, which are movable under the pressure of medium.

E-mail: sales@3dvalve.com
Mob: +8615068285212
Tel: +86-577-67354396
...

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The three piece trunnion mounted ball valve has been designed three piece body type and with two floating seats, which are movable under the pressure of medium. And three piece ball valves are produced with spring-loaded seats. This spring load keeps the seat in contact with the ball even in absence of line pressure and makes very efficient seal at low line pressure. As line pressure increases, the seat area creates a piston effect which forces the seat against the ball, therefore a tight seal becomes effective. If the pressure is higher, the force exerted by the seat on the ball is increased by action of the pipeline pressure. Therefore, the higher the line pressure, the greater the piston action. Seats are available in PTFE, R-PTFE, NYLON or others.


Trunnion mounted stems absorb the thrust from line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure, operating torque stay low.


The trunnion ball valve is equipped with a movable seat seal ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve. The body cavity may be vented in both open and closed state.




Design Features

The ball valve are designed in accordance with ISO14313、API 6D、BS 5351、GB/T 19672;

Simple structure with good sealing performance and small torque;

Full bore and reduced bore design with the minimum flow resistance (zero actually);

Emergency sealant injection;

Cavity pressure self relief;

Independent ball and stem;

Low emission packing;

Fire safe, anti-static and anti-blowout stem design;

Valve seat function DBB, DIB-1, DIB-2;

Optional extended bonnet.


Product Range

Body material: carbon steel, stainless steel, alloy steel
Nominal diameter:1/2”~36”

End Connection: RF, RTJ, BW

Pressure range: Class150~600(PN16~PN420)

Working temperature:-46℃~+200℃

Operation: Wrench, worm gear, electric, pneumatic, gas over oil actuator and electro-hydraulic actuator


Brand

3D

Valve Type

Three Piece Trunnion Mounted Ball Valve

Valve Material

Cast steel, stainless steel, special   alloy, etc

Valve Test

100% quantity tested before delivery

Valve Guarantee

18 months from the date of dispatch ex works, or 12 months from date of commodity installation.

Valve Painting

Customer request

Valve Package

Wooden case

MOQ

No requirement

Valve Certificate

API 6D/CE/ISO9001/ISO14001

Delivery Detail

Shipped in 4 or 6 weeks after payment

Port

SHANGHAI

Payment Terms

L/C,D/A,D/P,T/T

Certificate Offered

Packing List,Commercial   Invoice,Test Reports and Material Certificates,Certificate   of quality and quantity, Seller’s Certificate of Guarantee

 


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    Add: No.69, Xikang South Road, Dafeng Economic Development Zone, Yancheng City, Jiangsu Province
    Mob: +8615068285212
    Tel: +86-577-67354396
    E-mail: sales@3dvalve.com

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