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why would a check valve be necessary? 2010-12-10
There is a negative pressure coming from the furnace, and there is a small additional negative pressure created during a
Best way to stop air cylinder with a light curtain application? 2010-12-09
What are your thoughts about the best way to stop air cylinder with a light curtain application? Lets say it's mounted v
Your interpetation of B31.1 para 122.1.7(B)(B.1) 2010-12-09
I know this is a piping code, but I posted this question here because it applies to Boiler External Piping.
In the above
pipe vibration in stainless steel pipe 2010-12-09
I have a pipe vibration issue. Each time the submersible pumps starts the stainless steel pipe vibrates. I have two stat
chiller's shoot-off valves 2010-12-08
As is known, obligatory attributes, necessary at installation chiller,
are so-called shoot-off valves.
Rotating in reverse direction 2010-12-08
Assuming that the pump is OFF, and the check valve is leaking and the water is comming baack to the pump causing a rever
Water motor gongs 2010-12-08
I have noticed a trend over the past few years. Many new sprinkler systems are installed with no water motor gong and no
What does pump run back refer to? 2010-12-07
I'm new to to pump selection and engineering (as well as the forum). I have heard and read the term "pump run back" and
