Armstrong Rada 320 - Page 3

3
Water Temperature Control - Groups of Fixtures
Thermostatic
Rada 320D
A derivative assembly of the standard Rada 320 Thermostatic
Mixing Valve of “sealed for life” disposable cartridge construction.
Compact design with top and/or bottom blended water outlet
makesRada320Didealforrecessedenclosure,plumbingchase
and utility/mechanical room installation.
Complete operating mechanism of valve is enclosed in durable
polymer cartridge for ease of field maintenance. Powerful
internal mechanism and non metallic wetted parts resist mineral
deposition.
Capable of close temperature control at diverse flow rates
between 1 gpm (3.8 lpm) and 24 gpm (91 lpm). Able to blend
within 5°F (2°C) of either inlet supply due to “low seepage” across
internal proportioning mechanism.
Operational Specifications
• Dualthermostaticelementsprovideredundancyinthe
event of individual thermostat failure
• Typicaloutlettemperaturecontrol+/-2°F
• Adjustablemaximumtemperaturelimitstop
• Adjustablesingletemperaturelockout
• Thermalshutdownmodeuponinletsupplyfailure
Technical Specifications
• 3/4” NPT inlets and 3/4” NPT outlet
• Chrome-platedDZRbrass/polymerconstructionwith
self-finishbrassandbronzecomponents(320D)or
withnickel-platedcomponents(320DC)
• Operating pressures
Maximum: 150 psi (10 bar)
Minimum: 10 psi (.7 bar)
• Integral combination inlet check stop/union/strainers
• Outlet thermometer and outlet flow control valve
• ASSE 1017 and CSA B125 certified
• Shipping weight 10 lbs (4.5 kg)
Forasubmittaldrawing,refertoCDLW#1102.
7-3/8"
(187 mm)
9-1/8"
(232 mm)
11-7/16"
(291 mm)
Rada 320
Rada Thermostatic Mixing Valves (gpm)
Model
Pressure Drop (psi)
Min.
Flow
C
V
5 10 15 20 25 30 35 40 45 50
320 8 11 13 15 17 19 20 22 23 24 1 3.4
425 15 22 27 31 35 38 41 44 46 49 2 6.9
40 36 51 62 72 - - - - - - 2 16.0
50 49 70 85 98 - - - - - - 2 22.0