Dungs FRSBV 20010 HD Instruction Manual - Page 11

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7. Function

The FRSBV type safety valve is a safety pressure relief valve

(SBV) with an adjustable response pressure.

pressure results from the force that the movable parts exert

on the adjusting spring installed. The full response pressure

range can be covered by changing the adjusting springs.

The valve has an internal response pressure tap.

Main components

A Housing

B Regulating cup

C Push rod

D Working diaphragm

E Intermediate housing

F Upper protective cover

G Upper diaphragm case

H Vent connection

I Adjusting spring

J Adjusting nut

K Protective cap

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The response