2000 Hook-up Book

Figure II-33 Combined Pressure and Temperature Control of Heat Exchanger

Safety Valve

Vacuum Breaker

Moisture Separator

Drip Pan Elbow

Strainer

Note: scensor must not see a “dead” flow.

Pilot Operated Pressure/Temperature Control Valve

Sensor

Steam Supply

Heat Exchanger

Spira-tec Loss Detector

Float & Thermostatic Steam Trap

Cold Water Supply

When the pressure of the steam supply is higher than the heat exchanger can withstand, or is at a higher value than necessary to allow for fouling of the heat exchange surfaces, a pressure reducing valve is required. This can economically be combined with a temperature control by using pressure sensing and temperature sensing pilots to operate a common main valve. Sensor bulb must be fully immersed right at hot outflow and use of a separa ble well should be avoided.

Spira-tec Loss Detector

HOOK-UP DIAGRAMS

Strainer

Gravity Return

Float & Thermostatic Steam Trap

Self Acting Temperature Control

Thermostatic Air Vent

Moisture Separator

Steam Supply

Vacuum Breaker

Drain to Safe Place

Strainer

Steam Trap Station

Strainer

Float & Thermostatic Steam Trap

Temp. Control Sensor

Spira-tec Loss Detector

Liquid In/Out Flow

Heat Exchanger

Multiple Loads Connected to Vented Receiver

Note: scensor must not see a “dead” flow.

Steam Trap Station

H

Strainer

See Fig. II-34A for the preassembled Condensate Recovery Module

Float & Thermostatic Steam Trap

Condensate Return

Spira-tec Loss Detector

Receiver

Strainer

Figure II-34 Draining Small Heat Exchanger and Other Loads to Pressure Powered Pump Arrangement of Small Steam/Liquid Heat Exchanger where steam space pressure may fall below back pressure and trap has gravity drain. Note: Head “H” must be enough to give trap capacity needed when steam space pressure falls to zero.

Pressure Powered Pump

Thermo Dynamic Steam Trap

100