Fully Welded Body Ball Valve

ZAF fully welded ball valves are especially designed for gas transportation and storage industries. The fully welded body design can prevent any potential external leakage from connection of body and bonnet. In addition, the forged body with the advantages of consistent grain size and even thickness. Thus it inherently eliminates the conventional casted valve material defects, such as: shrinkage, porosity.


Design standard: API 6D
Length of structure: API 6D. 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 4″~NPS 60″,CL150~CL1500
Main body material : A105, LF2, F304, F316, F304L, F316L, F51etc.
Valve 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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