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.
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- Rada 425R - Product Literature (PDF)
- Water Temperature Controls - Recirculation Systems - Thermostatic - Product Literature (PDF)
- Armstrong Water Temperature Control Solutions Brochure - Product Literature (PDF)
- Rada 425R Installation Manual - Installation and Maintenance (PDF)
- Rada 425R ≤ 125 - Submittal Drawing (PDF)
- RADA 425R - Submittal Drawing (DXF)
- Rada 425R Thermostatic Mixing Valve Assembly - Specifications (MS Word)
- Rada 425R-FMC Thermostatic Mixing Valve Assembly - Specifications (MS Word)
