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Emergency Tempering Valves

Select an emergency tempering valve from the required fixture flow at the available dynamic pressure, the number of outlets that may operate together and where the valve will be installed. ProDryers carries Bradley, Haws and Guardian emergency and general thermostatic mixing valves, including point-of-use, high-low, high-capacity and recirculation configurations.

Choose the Valve Type Before the Connection Size

Install point-of-use valves at an individual fixture when the selected model and layout call for local temperature control. Verify fixture flow, mixed-water routing and service clearance.

Emergency-fixture valves are designed for eyewash and drench-shower applications. Selected documented configurations include a cold-water bypass; confirm the bypass behavior, outlet temperature range and failure mode for the exact model.

For Bradley Navigator configurations, high-low valves address systems with widely varying demand, while high-capacity manifolds serve larger combined loads and recirculation stations support looped distribution. Use each manufacturer’s sizing method for its own products.

How to Size the Valve

For Bradley Navigator emergency valves, size from required flow at the available dynamic pressure. For Haws and Guardian, use the exact model’s capacity and installation data. Add the flow of fixtures that can operate simultaneously and confirm incoming hot- and cold-water conditions. For Bradley sizing, use additional valves when calculated demand exceeds the selected valve’s rating; for other brands, follow the manufacturer’s sizing method.

What You Need Before Ordering

  • Fixture type and required flow
  • Number of simultaneous fixtures
  • Dynamic inlet pressure and hot/cold supply temperatures
  • Point-of-use, mechanical-room or recirculating location
  • Connection size, service clearance, thermometer/gauge and cabinet needs

Where the building lacks sufficient hot-water capacity, compare Emergency Water Heaters rather than expecting a valve to create heat. For combined shower and eyewash loads, start with the actual Safety Station demand.

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