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Metal Seated Orbit valve: Testing Standard 2010-11-03
Can we use API 6D as a testing standard for this type of valve? What are the allowable leakage rates?
Alternative body valve material 2010-11-03
Client piping specification stipulates A216 WCB as check valve body matrial. Vendor is propsing A487 Gr 4C. Shall I accept or not.
Hysteresis & Dead Band Tests on (electric actuated) ON/OFF valves 2010-11-03
The tests in object are typically applicable to control valves, especially when (smart) positioners are present.
DP Across Control Valve 2010-11-03
When specifying pressure drop across a control. If the upstream pressure is 300psig, and the fluid will flow to a downstream vessel operating at 30psig,
Valve material based on pipe material 2010-11-02
Selecting valve material based on pipe material doesn't always work.A common example is 304 SS piping systems.
UL Listed and FM approved Valves 2010-11-02
What "UL Listed" and "FM Approved" requirement for valves.UL = Underwriter Laboratories are safety certifiers.
Need the opposite of a relief valve 2010-11-02
A valve that functions in a manner that is opposite of a relief valve: a valve that closes when pressure gets above a setpoint.
Sample cylinder valves 2010-11-02
Most high pressure needle valves have arrows printed on the sides for flow direction.
