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# How to determine the max. end load for safety relief valves?

## How to determine the max. end load for safety relief valves?

(OP)
Can anyone help me on the max. end load of the safety relief valves connected with the piping? How to calculate or get the maximum resultant axial force and end moment permitted to be transmitted by the piping to the valve?
Valve body material is A216 gr. wcb and set pressure is 150 psi. Inlet size is 3/4 inch, outlet size is 1 inch.
Replies continue below

### RE: How to determine the max. end load for safety relief valves?

http://www.andersongreenwood.com/docnet/library/enghnbk.pdf

The Crosby Engineering Handbook, CHapter 7, page 12, give reaction force calculations.

or

Go to Dresser Site and download SRV-1 in Adobe PDF Format.  On Page TI.5 (Page 298 of 350) there is a reaction calculation chart.

J. Alton Cox
President
DeLuca Test Equipment
www.delucatest.com

### RE: How to determine the max. end load for safety relief valves?

(OP)

I think that the reaction force for safety valve is so different with the allowable end load(force and moment).

I want to know how to calculate the allowable piping end load which is applied the safety valve.

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