During the API 6D ball valve testing, the shell hydrostatic test requires pressurization to 1.5 times the design pressure, holding the pressure for at least
To extend the lifespan of API 6D ball valves, Inconel 625 weld overlay materials should be selected for highly corrosive conditions. Routine maintenance must strictly
The overall performance of trunnion ball valves is generally superior. Floating ball valves rely on fluid thrust to press the ball for sealing, making them
For standard operating conditions, PTFE soft-seated valves are used; for high-temperature and abrasive media, tungsten carbide metal hard seats with a hardness exceeding HRC 65
For conventional oil and gas, select carbon steel WCB, suitable for -29 to 425°C; For corrosive media, select stainless steel 316; For high-pressure sour offshore
Undersized float valves cause a closing delay of over 10 seconds, resulting in a single overflow of 3 liters; Inferior seals are prone to leakage
Brass is suitable for civil water systems, bearing pressures of 1.6 MPa and temperatures of 120°C; 316 stainless steel specializes in corrosive chemical environments, with
Custom float valves can withstand high pressures up to 25 MPa in natural gas processing. The float counterweight must be precisely calibrated based on a
Custom natural gas float valves must prioritize Inconel alloys to prevent sulfur corrosion. The selected pressure rating must exceed the system peak by 20%, and
The primary cause of gas leakage is the 15% plastic deformation of the sealing seat triggered by pressure surges. A sealing ring with a hardness
