We have a requirement in our instrumentation spec which calls for a "stall test" to be performed on actuator/valve assemblies to demonstrate that with the valve jammed at the maximum actuator output,

Consider a pneumatic actuator with a positioner, air lock and volume booster on.I can understand the reasoning for putting the air lock last (ie next to the actuator) so when air is locked in there is

According to IEC standards, a Safety Integrity Level (SIL) may be defined for a safety-related or safety instrumented system (SIS) with reference to a certain safety function.

Need mechanism or tool that helps in cleaning (accessing) gate pocket from Fe debris;

Gate valves are very loosely guided. You may be able to calculate a Cv for an intermediate position, but in reality the disc will be dancing about and the Cv will be dithering back and forth, without

Being asked how many turns it takes to close a 6 inch gate valve for the full open position.

If exist some rule in the selection of the wedge type (solid, flexible, parallel slide, double disc, etc) of the gate valve.

The Grove Valve building was a center of heavy industrial activity since 1939, most recently housing Grove Valve and Steel until 1996.