Water Temperature Control—Recirculation Systems—Thermostatic

Rada 425R

Rada Thermostatic Mixing Valve is designed specifically to be installed as the primary control valve within a pumped recirculation system. Capable of maintaining safe, accurate water temperatures during both peak and zero-demand “idling” periods. With a Rada 425R installed as the primary temperature controller within a pumped recirculation system, there will be a zero minimum blended water flow rate/draw-off requirement. The Rada 425R
features a unique integral thermostatic return limiter that maintains recirculating water temperatures within the circuit. Thermostatic return limiters eliminate the requirement for a fitted aquastat and reduce cycling wear and tear on the circulating pump.

Operational Specifications

• Dual thermostatic elements provide redundancy in the event of individual thermostat failure
• Typical system temperature control +/-5°F
• Adjustable maximum temperature limit stop
• Adjustable single temperature lockout

Rada 425R-FMC

Rada Thermostatic Mixing Valve is designed specifically to be installed as the primary control valve within a pumped recirculation system. Capable of maintaining safe, accurate water temperatures during both peak and zero-demand “idling” periods. With a Rada 425R installed as the primary temperature controller within a pumped recirculation system, there will be a zero minimum blended water flow rate/draw-off requirement. The Rada 425R features a unique integral thermostatic return limiter that maintains recirculating water temperatures within the circuit. Thermostatic return limiters eliminate the requirement for a fitted aquastat and reduce cycling wear and tear on the circulating pump.

Rada 425R-FMC is supplied as standard* fully assembled and pressure tested in an 26" x 30" x 10" stainless steel recessed cabinet with a 2" flange. Cabinet has a polished stainless steel piano-hinged door with a keyed cylinder lock.

Rada 425R-FMC is supplied as standard under this model number for top inlet hot and cold water supplies and a top outlet with a left hand hinged door as indicated in adjacent drawing.

Rada 425R-FMC can be specified/ordered with the following piping configurations under the following model numbers:

Top inlets/bottom outlet 425R-FMC-TB
Bottom inlets/bottom outlet 425R-FMC-BB
Bottom inlets/top outlet 425R-FMC-BT

* Note cabinet options under technical specifications.