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All ZGV valves are produced by employing the best raw materials, carefully selected, correctly identified and analysed. The machining is carried out with the latest type equipment to the most up-to-date methods. All products from ZGV are constantly tested and inspected to ensure that related Int'l standards and tolerances are strictly complied with. Vatac's Quality Assurance System is created to guarantee the consistent quality expected at an int'l level. ZGV achieves its quality requirements, in part, by performing its activities in accordance with their Quality Assurance System.
 
 
ZGV employed a large number of CNC machines for most of valves fabrications. Each piece valve from ZGV is well inspected before delivery covering Material Analysis, PMI, Hardness, Wall Thickness, and Hydraulic Tests. Moreover, Magnetism Particles, Fire Safe, Cryogenic, High Pressure Gas, Radio-graphic, Micrographic, Charpy Impact and Fugitive Emission Tests etc can be well-done by ZGV Upon Request.
 
 
In order to Suit the Market or customers requirements to try our best on a “Zero” Problem product, To meet our Tenet of “Quality the world value”, Generally, following tests/inspects can be performed based on our company standard managements or upon Customer’s (Special) Requests:
 
▲ Summary certification employed materials
▲ Chemical analysis and material test report
▲ Mechanical tests
▲ Welding procedure specification (if applicable)
▲ Welding and welder's qualification report (if applicable)
▲ Non destructive test and reports (Sometimes Upon Request)
▲ Heat Treatment record charts (if applicable)
▲ Hydrostatic Test
▲ Pneumatic (Air) Test
▲ Leakage Test
▲ Torque Test
▲ Functional Tests with Actuator (If applicable)
▲ Visual and Dimensional Control
▲ Piping/Coating Check/Stamping
▲ Check Electric Continuity Ball-Steam-Body
▲ Fire Safe Test
▲ Production Test Plan
▲ NACE Requirements (For Sour Service Only)
▲ Hic & SSCC Test (For Sour Service Only)