Pressure Reducing Valves

[mou]

What do they mean when they say a PRV will be in under "flow compensating mode" ?

Thanks

 

[davefitz]

can you clarify the application or process for which teh PRV is used? Or clarify who "they" are?

 

[mou]

The valve is to be used for a water distribution network to reduce high system pressures downstream of the valve. "They" refers to the tech. specification of the valve produced by the designer.

 

[MDP]

If you want to reduce the pressure downstream to a preset value, the valve is a pressure regulator and the pressure tap (internal or external) is locate downstream. Lots of manufacturers provide this type of PRV ; see Emersonprocess (formerly Fisher) model 95 for example.

If you want to control a constant flow rate donwstream independently of upstream pressure, the valve is a differential pressure regulator ; 2 pressure taps is needed (upstream and downstream). See Jordan valves (model 63).

MDP