Model: DTV, available in  ¾" and a new ½" and 1" NPT port.

Click here for Drain Tempering Valve (DTV) product sheet

The DTV valve can be used in applications where a discharge flow to a drain or sewer must be tempered with cold water to reduce temperature. In some areas, plumbing codes dictate a maximum allowable sewer discharge temperature. The DTV provides a convenient, economical, and easy to use method of tempering hot effluent flows. Since the DTV is open only when the effluent exceeds the specified setpoint temperature, it also conserves water by automatically turning off cold water when not needed.

Model Operation

The hot effluent to be tempered is connected to the drain/sewer line using a suitably sized tee fitting and piping sized to handle the effluent flow rates. The hot effluent passes over the thermal actuator of the DTV valve and this actuator controls the cold water inlet port. If the hot effluent is above the specified setpoint, the DTV opens the cold water inlet port to allow injection of cold water. As the hot effluent cools, the DTV valve 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.

Design Features

• Commercial dishwashers 
• Boiler blowdown drain lines
• Humidifier hot discharge
  
• Condensate discharge from steam traps directly to sewer
• Commercial dishwasher discharge
• Autoclaves and sterilizer discharges
• Any excessively hot effluent flow to sewer/drain

Watch the video below to see how Insinger Machines uses our DTV in their commercial dishwashers.