3-PC Body Trunnion Ball Valve

A trunnion ball valve has additional mechanical anchoring of the ball at the top and the bottom, suitable for larger and higher pressure valves.
The ZAF trunnion mounted ball valves are suitable to stand the harsh service conditions often presented in the hydrocarbon industry, gas storage and transportation field. In general, they are recommended for tight shut-off in high pressure and double block and bleed applications
ZAF valves 3-piece design body structure is available in forges steel. Valve body may be connected by bolts or welding.


Design standard: API 6D
Length of structure: API 6D/ASME B16.10. For product beyond the scope of the standard, it shall be manufactured by specifications in ZAF standard or user’s requirements.
Flange connecting end: ASME B16.5/ASME B16.47
Butt welding connecting end: ASME B16.25/ ASME B31.8
Wall thickness: ASME B16.34
Firesafe test: API 607/API 6FA
Inspection and test: API 6D
Pressure and temperature rating: ASME B16.34
Product scope: NPS 1-1/2″~NPS 60″,CL150~CL2500
Main body material: A105, LF2, F304, F316, F304L, F316L, F51,WCB, LCB, WCC, CF8, CF8M, CF3, CF3M, A890 4A etc.
Valve seat &  Seal material: PTFE, RPTFE, NYLON, DEVLON, Derlin, PEEK, PPL, HNBR, FKM or metal hard seal etc.
Operator: Handle, Worm wheel, Electric, Pneumatic, Pneumatic- hydraulic, Electro-hydraulic, etc.
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