Pressure Relief Valve top release
Pressure Relief Valve top release
(OP)
We are looking for a top release pressure relief valve. It has to WITHOUT QUESTION release the pressure from the top. Not out the side and then pipe to the top. We have two square channles, one is 12" tall x 8" wide, the other is 9" tall x 8" wide. Both are sealed plastic units with water flow.Some times we get water hammer from air getting inside at the pump,and we also may at times get extra water pressure. We have to install these valves ontop of each unit at the point of water entry. I was thinking about trying to build a square valve with round male on top and bottom of square box. I was thinking along the lines of a flap, that would lift upward at a set pressure. Does anyone know of any such animal on the market?





RE: Pressure Relief Valve top release
Give these people a call they are nice to work with.
http://www.checkall.com/catalog.htm
RE: Pressure Relief Valve top release
Also, Circle Seal and Kingston Make small top outlet designs
J. Alton Cox
www.delucatest.com
RE: Pressure Relief Valve top release
J. Alton Cox
www.delucatest.com
RE: Pressure Relief Valve top release
Crosby recommends to install only vertical ( spindle vertical) for proper functioning of the valve.
RE: Pressure Relief Valve top release
First, they are set that way and the weight of the spring, spindle, spring buttons, and disc are all part of the set pressure loading. Flop it over on its side and the valve will pop early, particularly if it is set for a low pressure or if it has a small orifice.
Second, The guiding of a safety-relief valve is a little casual compared to, say, a globe control valve. Flop the valve over on its side and the parts will probably not line up properly because of gravitational side-loading. Then it will leak.
RE: Pressure Relief Valve top release
J. Alton Cox
www.delucatest.com
RE: Pressure Relief Valve top release
However, re-reading the original post, I don't believe you need a safety-relief valve as much as you need a back-pressure regulator. All the usual suspects make back-pressure regulators: Masoneilan, Fisher, Leslie, Cashco/Kaye & MacDonald.
Safety-relief valves are intended as the last protection between a process upset and a crater where your plant used to be. Back-pressure regulators are for continuous regulation and elimination of pressure spikes. BP regulators are made on globe-valve patterns and thus have in-line inlet and outlet. So vertical flow is not a prob.
RE: Pressure Relief Valve top release