A valve that controls back pressure?
A little context would be nice--there's a lot of pressure control
valves around! "Back pressure" is just defined by your point of view
in the process.
Where is your valve? What are you doing with it?
A valve which is made to open and close throttle the flow through it so
as to maintain constant the pressure upstream of the valve. As pressure
upstream falls, so the valve will throttle-in the flow in an attempt to
increase the pressure upstream, and vice-versa: if pressure upstream
rises too far, the valve will open to increase the flow and reduce the
In some industries; e.g. the water treatment industry, the valves to do
this are especially designed for the industry application.
Kelvin B. Hales
Kelvin Hales Associates Limited
Consulting Process Control Engineers
No.. it's a little more complicated than that.
As Kelvin explained, a Back Pressure Control Valve is typically a valve body
with an internal diaphragm and a bunch of spaghetti-thin pipework conected
to various parts of it to get it to work properly.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.