Tempering Solutions

What makes Bradley's Emergency Thermostatic Mixing Valves different from the competition?

Bradley is the only manufacturer that makes its own emergency fixtures and emergency thermostatic mixing valves. Bradley employs a unique fixed cold-water bypass design to ensure that scalding does not occur.

What is the difference between an Emergency Thermostatic Mixing Valve and a standard Thermostatic Mixing Valve?

An emergency thermostatic mixing valve features an integral fixed cold-water bypass that provides cold water even if the hot water supply is lost. Bradley's valves maintain a full volume of water even if the hot water runs out before the ANSI/ISEA Z358.1 mandated 15 minute flush is complete.

How do I know which Emergency Thermostatic Mixing Valve I need?

Bradley provides a emergency valve sizing guide to help with this decision.

There are several factors to consider before getting started. First, you must determine the manufacturer's flow rate for each type of fixture. (The ANSI/ISEA Z358.1 minimums are .4 GPM @30 PSI for eyewashes, 3 GPM @ 30 PSI for eye/face washes and 20 GPM @ 30 PSI for drench showers. However, manufacturers' flow rates may vary.) Second, figure out the pressure available in your building, taking into consideration that long runs of pipes add to pressure drop. Contact the valve manufacturer for specific pressure drop information. Now, total up your fixtures and multiply them by their actual flow rates. For example: 3 eye wash stations 3.0 GPM @ 30 PSI (actual flow) 9 GPM 4 eye/face washes 3.5 GPM @ 30 PSI (actual flow) 14 GPM 23 GPM Total Output @ 30 PSI You would need a valve that would provide a minimum of 23 GPM total output to accurately supply tepid water to all fixtures if they were used simultaneously.

Do you sell a tankless water heater?

Yes, Bradley offers Keltech™ Tankless Tempering Systems for all types of emergency fixtures. Check out the product page for our entire list of offerings.




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