Did you know: The Armstrong Flo-Direct water heater has a tested efficiency of 99.7%.

• +/- 5°F Temperature Stability to fixture (Return Limiter)
• Accuracy at Low Flow Rates
• Maximum Temperature Locking Feature
• Single Replacement Cartridge

 

Thermostatic Mixing Valves

Thermostatic

Water Temperature Control - Recirculation Systems - Thermostatic features four individual Thermostatic Mixing Valve assemblies and two packaged systems designed for use in pumped recirculating hot water systems.

The complete range has been designed to offer traditional thermostatic mixed water temperature control in applications where there are diverse flow requirements up to 288 gpm (1,090 lpm).*

All valves and valve packages designed for recirculation system control are identified with the suffix R.

Sizing

To size, simply match the required flow rate on the charts below with the pressure drop that the existing system can accommodate or the new system design specifies. Armstrong refers to the Modified Hunter Curve, where applicable, when determining system flow requirements.

* Consult factory for customized Rada packages for flow requirements in excess of 288 gpm (1,090 lpm).

 Rada Thermostatic Mixing Valves (gpm)
Model Pressure Drip (psi) Min. System Draw-Off Max. Flow Cv
5
 10
 15
 20
320R 8 11 13 15 0 16 3.4
425R 15 22 27 31 0 26 6.9
40R 36 51 62 72 0 58 16.0
50R 49 70 85 98 0 98 22.0


 Rada Thermostatic Mixing Valves (gpm)
Model Pressure Drip (psi) Min. System Draw-Off Maz. Flow Cv
5
 10
 15
 20
50R-50R 97 137 168 193 0 193 42.4
50R-50R-50R 144 204 250 288 0 288 63.6

For an application drawing on Thermostatic Mixing Valves, please click here.

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