The DTV is a self-operating drain tempering valve designed to mix cold water with hot effluent to maintain safe discharge temperatures and comply with plumbing codes. It is available in sizes 1/2", 3/4", and 1" NPT, with an all-stainless-steel thermal actuator and brass or 300-series stainless steel body. The valve modulates based on effluent temperature, opening at set points of 120°F to 140°F and closing approximately 10°F below that. It operates in any orientation, requires no external power, and is installed using standard pipe fittings. A water hammer arrestor must be installed at the cold water inlet when a check valve or backflow preventer is used. Maximum inlet water pressure is 125 PSIG (8.6 BAR), with a maximum effluent temperature of 250°F (121°C).
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.
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 set point temperature, it also conserves water by automatically turning off cold water when not needed.
| ThermOmegaTech® | |
|---|---|
| Product Category | Industrial Valves |
| Product Number | DTV |
| Product Name | Drain Tempering Valve |
| Valve Type | Control Valve; Drain; Mixing |
| Primary Material | Brass / Bronze (optional feature); Stainless Steel |
| Media | Water; Hot Water; Cold Water ; Potable Water |
| Valve Size | 0.50 to 1.00 inch (12.70 to 25.40 mm) |
| Maximum Pressure | 125.00 psi (87.97 m H2O) |