API WCB Trunnion mounted ball valve

API WCB Trunnion mounted ball valve

Short Description:

The ball of trunnion mounted ball valve is fixed between the stem and the turnnion(a central bottom shaft),it’s not floating but fixed and centered.The inline pressure presses the seats against the ball,causing tightness.

Size:DN50-DN1000
Pressure:Class150-Class2500
Available material:Carbon steel/Stainless steel/Alloy steel…
The trunnion mounted ball valve is designed and manufactured according to API 6D/ASME B16.34


Product Detail

Product Tags

Specification

Item Cast steel trunnion mounted ball valve Forged steel trunnion mounted ball valve
Size DN50-DN1000 DN50-DN600
Pressure Class150-Class900 Class150-Class2500
Available material Body:A216-WCB/A352-LCB/A351-CF8,CF8M,CF3,CF3M,Duplex
Seat:PTFE/RTPFE/PEEK/PPL
Stem:A105+ENP/A182-F6, F304,F316, F316L, F304L,17-4PH,F51
Ball:A105+ENP/A182-F6, F304,F316, F316L, F51
Body:A105/A182-F304,F316,F316L,F304L,F51
Seat:PTFE/RTPFE/PEEK/PPL
Stem:A105+ENP/A182-F6, F304,F316, F316L, F304L,17-4PH,F51
Ball:A105+ENP/ASTM A182-F6,F304,F316,F316L,F51
Feature 2 pieces/3 pieces body
Trunnion mounted ball,full &reduced bore
Anti-static device
Blow-out proof stem
Fire safe design
Emergency sealant injector
Vent valve, drain valve
Lifting lugs and supporting feet (8" & larger).
Operation Lever/Gear/Pneumatic/Hydraulic/Electric
Standard Design:API 6D/ASME B16.34
Face to face:ASME B16.10
Flange:ASME B16.5
Butt welding:ASME B16.25
Test:API 598
Fire safe test:API 607/ API6FA

Advantages

1.Easy operation:The ball is supported by upper and lower bearings,which reduces friction and eliminates excessive torque caused by the huge sealing load formed by the inlet pressure pressure the ball and the sealing seat.
2.Reliable sealing performance:PTFE single material sealing ring embedded in the stainless steel seat, the metal seat end is provided with a spring to ensure sufficient pre-tightening of the sealing ring, when the sealing surface of the valve is worn during use, the valve continues to ensure good sealing performance under the action of the spring.
3.The structure of the fire prevention: In order to prevent the appearance of sudden heat or fire, so that the PTFE sealing ring burned, large leakage, and fuel the fire,The fireproof sealing ring is arranged between the ball and the valve seat, when the sealing ring is burned, under the action of the spring force, the valve seat sealing ring is quickly pushed to the ball, forming a metal and metal seal, playing a certain degree of sealing effect.Fire resistance test conforms to APl6FA and APl607 standards
4.Automatic pressure relief function: When the pressure of the stagnant medium in the valve chamber rises abnormally beyond the preload of the spring,the seat recedes from the ball to achieve the effect of automatic pressure relief, and the seat automatically restores after pressure relief.
5.The discharge line:Discharge holes are arranged above and below the valve body to check whether the valve seat leaks, in the work, the valve is fully open or fully closed, remove the pressure in the cavity,the packing can be directly replaced,cavity retention can be discharged, reduce the medium to the valve pollution,reduce the contamination of the valve by the medium.

Application

Trunnion mounted ball valve is suitable for general industrial pipeline,long line pipeline, high pressure medium pipeline and a variety of corrosive and non-corrosive media,widely used in chemical,metallurgy,petroleum and pharmaceutical.


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