The dimensions for flat head, 'double d'. I use standard ISO EN 5211. But what can i use for machining 'single' flat head?

A carbon steel valve body (for ball valves) be more suitable or equal to a ductile iron body for a glycol-water based coolant system for cooling a large diesel engine?

CRN (Canadian Registration Number) for Cat C valves that are B16.34 design but are made from a material that is not listed in B16.34.

A flow from a pump, and soon after the pump discharge want to be able to take off half the flow at times, and regulate the pressure.

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;