Installation
06-237619-001 4-37 April 2020
Figure 4-26. Pressure Operated Switches, Hazloc
4-16 PRESSURE OPERATED TRIP
Install the pressure operated trip as shown in Figure 4-27. Connect the trip to the discharge
piping with 1/2-inch schedule 40 pipe. The minimum operating pressure required is 50 PSI.
The maximum load on the retaining ring is 100 pounds.
Figure 4-27. Pressure Operated Trip
3 POLE
SINGLE
THROW
TOGGLE
SWITCH
SET POSITION
GAS
INLET
PRESSURE
OPERA
TED
EXPLOSION
PROOF
SWITCH
3 POLE
1 in. NPT FEMALE BOTH ENDS
FOR ELECTRIC CONNECTION.
SWITCH SUPPLIED WITH (2)
1 in. NPT PIPE PLUGS
EXPLOSION PROOF
MACHINED JOINT.
DO NOT USE GASKET
OR MAR SURFACES.
PRESSURE INLET
1/2 in. NPT FEMALE
OPERATING
HEAD
(2) 13/32 in. MOUNTING HOLES
UNION CONNECTION
(6) COVER
SCREWS
GUARD
STEM
RING
BRACKET WITH
3/8 in. (10 mm) DIA.
MOUNTING HOLE
BODY
1-3/8 in. (41 mm) HEX
1/2 in. NPT FEMALE
PRESSURE INLET
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