Mixing Valves

Mixing valves are used when you need two different temperatures of water from the same heater. For example, you own a restaurant and need 145° water for your three compartment sink and 125° water for your restrooms. You would buy a heater that creates 145° water and pipe that water to the three compartment sink and then install a mixing valve after that to reduce the temperature to a usable level for the restrooms. They are also used in safety applications to insure the fluid output temperature meets OSHA specifications for eyewash and safety shower applications.

Mixing valves can also be used to fine tune the temperature on CF series heaters. 

For most applications the general purpose mixing valve (MVH) supplied by Honeywell is ideal. It is easily set and monitors the temperature by mixing more or less cold water with the hot water from the heater. It can be set from 75° to 145° with a maximum input temperature of 185°. ¾” and 1” connections are available.

The Cash Acme mixing valve is a good choice for higher temperature applications. It can be set from 100° to 176° with a maximum input temperature of 200°.

The high flow 37 Gpm MX128 from Honeywell has maximum input temperature of 150° and adjusts between 90° and 125°. It is primarily used on safety showers.