Functional Description; Construction - GEM N082 Installation, Operating And Maintenance Instruction

9

Functional description

The GEMÜ N082, N182 and N782 pressure
reducers ensure that a constant outlet
pressure is maintained in process plant
utilizing the pressure differential. If the
pressure rises on the outlet side, the spring
force is lower and the valve closes as the
spring is raised. The pressure is reduced
until the spring force and the outlet pressure
are the same. If the pressure falls, the valve
opens as the spring force presses against
the diaphragm surface via the control
aperture. The outlet pressure can be read
off a diaphragm-protected pressure gauge
and the spring force adjusted using a set
screw as required.
10

Construction

2
1
16
Construction GEMÜ N082, N182
1 Valve body
2 Valve bonnet
3 GEMÜ 082: Diaphragm
GEMÜ 182: Piston with O-ring
14 Cap
16 Valve bottom with O-ring
21 Pressure gauge
2
1
16
Construction GEMÜ N782
1 Valve body
14
2 Valve bonnet
3 Diaphragm
14 Cap
16 Valve bottom with O-ring
3
21
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N082, N182, N782
14
3