What Are the Key Testing Requirements for API 6D Ball Valves | Shell Test, Seat Test, Functional Test
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 3 minutes with zero leakage; The seat test uses 1.1 times the water pressure or 0.6 MPa air pressure to detect internal leakage; The functional test requires 3 consecutive full […]
How to Extend the Service Life of an API 6D Ball Valve | Proper Material, Regular Inspection, Correct Operation
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 execute ultrasonic thickness measurements and grease injection every 6 months. They must be kept in a fully open or fully closed state; it is strictly prohibited to open them slightly […]
Which is Better: Trunnion Mounted vs Floating API 6D Ball Valve? | Torque, Pressure Performance, Valve Size
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 suitable for low-pressure applications of 6 inches and below Class 300. Under high pressures, their operating torque becomes exceptionally large and they are prone to wear. The ball of a […]
