Have a small ball valve (1" inch bore, 1.875" ball) and need to have a torque spec for sealing/seating the ball and seals with a retaining nut threaded in.

A supplier brought to my attention that I had an unusually high velocity going through a check valve in a PS design I was working on...

I'm looking at an oil export system that has two valves in parallel. Only one at a time should be controlling the flowrate in a cascade level onto flow control.

I have a customer that has put two back pressure regulators in parallel in a fluid application. They are using one as a primary and one as a back up in case the first one fails.

I am new to Valves and need to know about the differences between various valve designs and when to use them.

We continually have reliability problems with industrial-grade, rubber-lined butterfly valves that we use for onstream isolation of our cooling water (sea water)exchangers. We have tried them all ---

I am building a simple flow loop to test flow capacity (water) thru valves. Is there a "building flow loops for dummies" book available?

I am finding leakage in ball valve,when it is in closed condition.The Teflon seat is loaded by spring force from either end of ball(Inlet & outlet flow).However experts opinion is at cold flow(-20 deg