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  1. rocky06

    Floating seat Ball Valves - Low pressure air

    Try to Keep 0.20-0.25 mm pre-compression per seat.You will get better results.
  2. rocky06

    Floating seat Ball Valves - Low pressure air

    If you are testing the valve at low pressure- Pressure must be 0.5 bar. (as per supplementary test of API6d) what about valves performance in standard 6d testings. do they found leak proof? (even after cycle) If so, then i would recommend to increase pre-compression of seats in assembly...
  3. rocky06

    Ball Diameter calculation for ball valve

    Sir,thank you for your reply diameter remains same irrespective of valve rating for same valve size?
  4. rocky06

    Ball Diameter calculation for ball valve

    I want to know whether their is a standard calculation for Ball valve ball diameter selection As All Parameters in Ball valve Design are Dependent on ball Diameter. I do know about the thumb rule for ball diameter selection ( approx. 1.5-1.7 times of valve bore) Is their any justification for...
  5. rocky06

    Torque due to piston effect and spring load

    You can take multiplying factor 2.2 2A=Dc so ans of that integral is 2.2. Didn't understand why did you calculated ball thrust as its value doesn't included in any formula. Coefficient of Friction is 0.2 for which material?

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