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Hydropower from water mains 2010-11-29
If the water is pumped, any energy you extract with your generation would have to be supplied by the pumps.
Variable sped drive for a pump motor in a shower 2010-11-29
All energy regulatory bodies need to learn how to read a pump curve. As LionelHutz said, "energy savings guides showing VFD's as automatic energy savers are "stupid"", and so are the people who belie
Pressure Valve Chattering 2010-11-29
One of the main reasons I have found for chattering of a safety valve is improper line sizing. Specifically, the inlet line to the safety valve.
Excessive Pressure Drop in Pressure Reducing Valve 2010-11-26
Fisher 627WH pressure regulator, used in anhydrous ammonia service. This valve was originally going to see up to ~750 psig and drop it down to 300 psig
pressure-reducing upstream pressure-sustaining 2010-11-26
The cascading failure is one valve closes up (for whatever reason) and the following valves see no pressure upstream so they open wide trying to maintain setpoint and not able to.
Pressure reducing valve 2010-11-26
There are a couple of things I can think of:1 - You could use "pressure regulating" valves, not pressure reducing valves. These basically throttle the flow.
Presser Reducing Valves (PRV) 2010-11-25
Self-contained pressure regulators are sometimes called pressure reducing valves or pressure control valves. This is likely the case here.
Using Pressure Reducing Valve for filter bypass 2010-11-25
We are adding a treatment system (for taste-not safety) which will have pressure drop proportional to flow.
