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Mob: +8615068285212
Tel: +86-577-67354396
Side Entry Trunnion Ball Valve

Side Entry Trunnion Ball Valve

3D’s standard side entry trunnion ball valves are designed to API’s highest standards.

Mob: +8615068285212
Tel: +86-577-67354396

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3D’s standard side entry trunnion ball valves are designed to API’s highest standards. The 3-piece design offers maximum protection against line pressure and thermal distortion with long life and trouble-free performance. And supply its products to the Crude Oil Transport and Processing, Power Engineering, Water Supply Systems and Process Industries.

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 stays low.

3D ball valves have been fire tested and can be supplied to API 607.The soft seat inserts, irrespective of their materials, will possibly fail when subjected to sudden high temperature conditions. We provide fire-safe design which may substantially prevent leakages through seals when damaged by high temperature.

The seats are of both-side-sealing type, which means that they seal both on the upstream or downstream side of the ball valve and inside the valve. Whether in the open or closed position, pressure on each side of the ball is blocked from the body cavity by the seat rings engineered to self relieve. No pressure build up can occur in to body drained through the body port


The side entry trunnion mounted ball valve has been designed two piece body type or three piece body type and with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats can attach the ball’s surface tightly, other more, pressure of medium also can push seats to attach ball tightly to ensure sealing more reliable.

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.

Design Features

The side entry trunnion mounted 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: 2”~60”(DN50~DN1500)

End Connection: RF, RTJ, BW

Pressure range: Class150~2500(PN16~PN420)

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



Valve Type

Side Entry Trunnion 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


No requirement

Valve Certificate

API 6D/CE/ISO9001/ISO14001

Delivery Detail

Shipped in 4 or 6 weeks after payment



Payment Terms


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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  • Jiangsu 3D Valve Co.,Ltd

    Add: No.69, Xikang South Road, Dafeng Economic Development Zone, Yancheng City, Jiangsu Province
    Mob: +8615068285212
    Tel: +86-577-67354396


    Our company was founded in 1998, covers an area of 33751 square meters, construction area of 15800 square meters. Company has sophisticated valve R & D, design, sales, management and service team


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