Emerson E2 - 1.4 Networking Overview; 1.4.1 E2 I;O Network

Figure 2. Type E2 Main Valve Installation
AVOID BULL-HEADED CONNECTION TO LOW
PRESSURE STEAM MAIN WHEN REDUCTION
IN NOISE LEVEL IS IMPORTANT
PREFERRED TRANSITION
- 15° MAX TOTAL
INCLUDED ANGLE
1/4" CONTROL PIPE PITCH
AWAY FROM PILOT, AVOID
WATER POKETS
DRIP AND TRAP AHEAD
OF RISE IN PIPING,
SECONDARY PRV OR
CONTROL VALVEV
4 PIPE DIAMETER (D
1
)
MINIMUM
BYPASS
VALVE
ISOLATION
VALVE
ISOLATION
VALVE
SPENCE
STRAINER
SPENCE
PRESSURE
REGULATOR
LONG
RADIUS
ELBOW
DRIP
AND
TRAP
RECOMMENDED AT LEAST
10 PIPE DIAMETERS (D
1
)
STRAIGHT RUN, FULL SIZE
RECOMMENDED AT LEAST 20 PIPE
DIAMETERS (D
1
) TO FIRST TURN,
SECONDARY PRV OR CONTROL VALVE
4
Type E2