High back pressure pumps
High back pressure pumps
(OP)
Hi. . Can anyone tell me exactly what back pressure in pumps refers to? What is a high back pressure pump? From what I know back pressure is the resisting pressure so wouldn't high back pressure mean lower discharge pressure?





RE: High back pressure pumps
RE: High back pressure pumps
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: High back pressure pumps
RE: High back pressure pumps
http://www.oilandgasiq.com/glossary/back-pressure/
http://en.wikipedia.org/wiki/Back_pressure
RE: High back pressure pumps
In centrifugal pumps, the term back pressure tends to refer to the minimum discharge pressure to avoid the pump operating off the curve.
RE: High back pressure pumps
RE: High back pressure pumps
RE: High back pressure pumps
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: High back pressure pumps
RE: High back pressure pumps
But it could also be used (incorrectly!) as a layman's definition of a system curve. Kinda.
RE: High back pressure pumps
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: High back pressure pumps
Back pressure is not important to positive displacement pumps. Positive displacement pump provides an approximate constant flow at fixed speed, despite changes in the back pressure. Changing back pressure on a positive dieplacement pump results in a minimal flow change.
However, the flow of a centrifugal pump will change considerably with back pressure.
Back pressure is simply the resistance to fluid flow in a piping system. Back pressure is measured by obtaining the discharge head of the operating pump.
RE: High back pressure pumps
RE: High back pressure pumps
RE: High back pressure pumps
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: High back pressure pumps
It is ridiculous how could this be treated as back pressure
RE: High back pressure pumps
If you are relieving back directly to the pump suction, the pump suction pressure become the back pressure of the relief valve. You must size the relief valve base on the differential pressure across it.