Instrument Temperature Control
  • TV/SC-A

A thermostatic element located at one end of the TV/SC-A (thermally isolated from the body of the valve), will open or close within a 10°F (5.6°C) differential (e.g. 35°-45°F, etc.) and control the flow of steam, gas, or fluid through the valve based on ambient temperature. The TV/SC-A opens on falling temperature.

  • Economically controls fluid flow

  • Reduces operating and labor costs associated with winterization procedures

  • No outside power source required

  • Eliminates steam waste in tracing

  • Standard tube connections for quick and easy installation

  • ITCH Assembly

​A thermostatic element located at one extreme of the TV/SC-A valve portion of the ITCH Heater Assembly regulates the steam supply to the heater coil to accurately maintain the desired temperature, operating like the thermostat in an oven. The TV/HATat the valve inlet keeps the steam supply hot right up to the valve. Heat radiating from the steam coil heater reaches the actuator causing it to quickly close the steam supply when the desired temperature is reached, regardless of ambient.

  • Maintain enclosure temperature accurately over a wide range of ambient temperatures

  • Eliminates danger of overheating

  • No outside power required, self-operating, eliminating explosion hazard.

  • Economically controls steam flow

  • Complete kit for quick and easy installation

  • Operating temperatures unaffected by variable inlet pressures

High Temperature Shut Off
  • HAT

A thermostatic element inside the valve senses temperature and if this falls below the set point, the valve modulates open to allow flow. When the temperature increases to near the set-point, the HAT (Heat Actuated Trap) valve modulates closed. HAT valves are available with built-in leakage to allow bypass flow.

  • Controls fluid return temperatures – ideal for glycol tracing

  • Maintains constant discharge temperatures

  • Improves system efficiency

  • Unaffected by pressure variations

  • HST

The HST High Sample Temperature Safety Shutoff Valve is used to sense the sample temperature after the sample cooler. The sample passes through this normally open valve whenever the sample temperature is below the valve setpoint. If the sample temperature exceeds the valve setpoint, the HST closes to protect expensive and delicate analyzers and other instruments from overtemperature damage. When the HST cools below the setpoint, it will automatically reset open again. Low coolant flow or total loss of cooling water or unusually high sample temperatures are typical reasons why the HST self-operating protective device should be considered.

  • Protects expensive and delicate sample analyzers

  • Automatically resets when sample cools

  • No outside power required

  • Superior value vs. more expensive electric valves

  • Easy installation

Drain Tempering

The DTV can be used in applications where a high temperature discharge flow to a drain or sewer must be tempered with cold water. The DTV is installed into the drain line such that the hot effluent passes over the thermal actuator of the DTV and this thermal actuator controls the cold-water inlet port. If the hot effluent is above the specified set point, the DTV opens to allow injection of cold water. As the hot effluent cools, the DTV automatically modulates to reduce the cold-water inlet flow. At about 10°F below the full open temperature, the cold-water inlet is fully closed to conserve water.

  • Compliant with drain temperature limitations of plumbing codes

  • Prevents damage to PVC piping due to over-temperature conditions

  • Minimizes water waste

  • Easy to install

  • Adaptable to almost any drain size

Thermal Relief

As the fluid temperature increases to within the operating range of the ECONO/HAT-RA, the thermal actuator modulates the valve open. If the fluid temperature is above the acceptable range, the valve will continue to modulate open allowing additional fluid discharge. As the outlet temperature falls slightly, the valve then modulates toward the closed position, reducing flow. This modulating action maintains a relatively constant fluid temperature even as operating conditions vary.

  • Protects pump and pump seals from over-temperature damage

  • Prevents potentially scalding water from being distributed to users

  • Provides completely mechanical thermal relief for booster pumps and cooling jackets

  • Self-operating, no power or signal required

  • Unaffected by pressure variations

Sarnia Piping Specialties Ltd.

765 Evett Street

P.O. Box 2018

Sarnia, Ontario N7T 7L1

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Email: 

Operating Hours

Mon - Fri: 8am - 5pm EST

© 2019 Sarnia Piping Specialties Ltd.

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