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Type E
GLOBE VALVE
AT LEAST 10 PIPE DIAMETERS (D1)
STRAIGHT RUN, FULL SIZE
GATE VALVE
D1
STRAINER
DRIP AND
TRAP
DO NOT INSULATE BELOW THIS
LINE OR ANY PART OF THE PILOT
TYPE E MAIN VALVE
4
SPENCE
PRESSURE
REGULATOR
ALLOW CLEARANCE
ABOVE AND BELOW
1/4 IN. SENSING PIPE – PITCH AWAY
FOR MAINTENANCE
FROM PILOT, AVOID WATER POCKETS
CONNECT TO D2 PIPE WHERE SHOWN
TYPICAL INSTALLATION
TYPE D PILOT
4B COUPLING
211 BLEEDPORT
8B TEE
5A RESTRICTION ELBOW
VIEW ON INLET
INSTALLATION OF INTEGRALLY MOUNTED PILOT
Figure 3. Type E Main Valve Installation
AVOID BULL-HEADED CONNECTION TO
LOW PRESSURE STEAM MAIN WHEN
REDUCTION IN NOISE LEVEL IS IMPORTANT
AT LEAST 20 PIPE DIAMETERS (D2)
TO FIRST TURN OR SECONDARY PRV
OR CONTROL VALVE
GATE VALVE
GATE VALVE
4 PIPE DIAMS.
(D2) MINIMUM
PREFERRED TRANSITION – 15 IN.
MAX. TOTAL INCLUDED ANGLE
ADJUSTING NUTS – TURN DOWN TO
INCREASE DELIVERY PRESSURE
STRAINER
D2
DRIP AND TRAP AHEAD OF RISE
IN PIPING OR SECONDARY PRV
OR CONTROL VALVE
1/4 IN. CONTROL PIPE PITCH
AWAY FROM PILOT AVOID
WATER POCKETS CONNECT
INTO MAIN LINE
LONG
RADIUS
ELBOW
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