2000 Hook-up Book

a Safety Valve Pressure Sensing Line Drip Pan Elbow

Figure II-14 Series Pressure Reducing Valve Station for High Turndown Rations

Pressure Sensing Line

Moisture Separator

Reduced Steam Pressure

Strainer

Strainer

Steam Supply

Pilot Operated Pressure Control Valve

Pilot Operated Pressure Control Valve

Check Valve

Strainer

Float & Thermostatic Steam Trap

Spira-tec Loss Detector

Spira-tec Loss Detector

Check Valve

HOOK-UP DIAGRAMS

Strainer

Float & Thermostatic Steam Trap

Note: Intermediate pressure takeoff requires an additional safety valve.

Figure II-15 Hook-up for Remote Operation of 25 PRM Pressure Reducing Valve

Safety Valve

5/16" Copper Tubing or 1/4" Pipe

Drip Pan Elbow

Moisture Separator

Noise Diffuser (if required)

Strainer

Steam Supply

Reduced Steam Pressure

Main Control Valve

Remote Pressure Pilot

1/2" Pipe

Check Valve

Check Valve

Check Valve

Strainer

Float & Thermostatic Steam Trap

Float & Thermostatic Steam Trap

Float & Thermostatic Steam Trap

Limit pilot to 15 ft. drop below main valve and drain all supply tubing. If pilot is mounted above main valve, pilot line drip traps can be eliminated. For longer distance an air loaded pilot should be used.

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