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Low Lead High Flow Thermostatic Mixing Valves
© Copyright 2015 Caleffi
Installation, commissioning and service instructions
ASSE 1017
Function
ASSE 1017 model 5231 series high flow thermostatic mixing valves are
designed to be installed at the hot water heater (point of distribution) and
cannot be used for tempering water temperature at fixtures as a point-of-use
valve. They are not designed to provide scald protection and should not
be used where ASSE 1070 devices are required. Series 5231 thermostatic
mixing valves can also be used for regulating the flow temperature in radiant
panel heating systems, to which it assures a constant and accurate control
with ease of installation.
Product range
5231 series thermostatic mixing valve. Union thread NPT male and
union sweat connections, sizes 1", 1 ¼", 1 ½", 2". Inlet port check valve
assemblies available separately for field installation.
Technical characteristics
Materials:
- body:
- shutter:
- springs:
- seals:
- check valve extension (field installed):
Suitable fluids:
Max. percentage of glycol:
Setting range:
Temperature stability:
Max. working pressure (static):
Max. working pressure (dynamic):
Hot water inlet temperature range:
Cold water inlet temperature range:
Mixed temperature range:
Max. inlet pressure ratio (H/C or C/H) for optimum performance:
Min. temperature difference between hot water
inlet and mixed water outlet for optimum performance:
Max. water hardness:
Certified to:
1. cUPC listed to ASSE 1017/CSA B125.3 Reduction of Lead in
Drinking Water Act Compliant: 0.25% Max. weighted average
lead content. Certifed by IAPMO R&T.
2. Meets requirements of ANSI/NSF 372 - 2011.
NA10341.02
www.caleffi.com
5231 Series
DZR low-lead brass
stainless steel
stainless steel
30% glycol solution
see table on page 2
200 psi (14 bar)
75 psi (5 bar)
120–195°F (49–91°C)
39–80°F (3.9–26.6°C)
95–150°F (32–66°C)
brass
EPDM
water
±3°F (±2°C)
2:1
20°F (11°C)
10 grains