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Watts Mixing Valve70AF-050 1/2
Inch70A Hot Water Extender Tempering ValvesSeries
70A Hot Water Extender Tempering Valves are used in residential water supply
applications to mix cold and hot water to extend capacity of water heater
storage tanks and hot water boiler tankless heaters. You can meet
various installation requirements with the Watts 70A Series Hot Water Extender
Tempering Valves. They are available in 1⁄2" and 3⁄4" [15 - 20mm] sizes, with
sweat connections. Temperature range 120° to 160°F [49°- 71°C].The
hydraulically-operated thermostat opens a spring loaded check in the cold water
inlet allowing cold water to mix with the hot water.Maintenance is very
simple, as the thermostat is easily removed and replaceable as a unit. Valve
bodies are of brass construction that is recognized and required to resist
corrosive domestic hot water conditions.Product
Application: Hot water extender tempering valves are used in
residential water supply applications. Recommended for tankless heater, water
heater and solar installationsProduct Function:Adjustable temperature
control - mixes hot with cold water to preset
temperature.Product Features:• Brass valve bodies•
Simple maintenance • thermostat assembly
• is easily removed and •
replaceable as a unit• "FINGER TIP" Dial
• adjustment Cap• Stainless steel spring • with sweat connectionsProduct
Limited Factory Warranty - see warranty details below
Maximum Pressure: 150psi [10 bars]Series
70A temperature range: 120°F to
HELP » Installation Manual[PDF
Contains more than 0.25% Lead. It is illegal to use this product
in any plumbing system providing water for human consumption.
Watts 70A Series
A balancing or throttling valve must be installed in the cold
water leg to the hot water temperature control valve to throttle or restrict
the pressure. In most installations, the cold water supply line feeds both the
hot water temperature control valve and the water heater or tankless heater.
To compensate for the pressure drop through the heater, the cold water to the
hot water temperature control valve must be throttled or reduced.Check
water heater controls to verify that the water temperatureis the same as
the heater thermostat setting.Check gpm flow required versus gpm flow
capacity of valve.
WARNINGWatts hot water extender tempering valves
cannot used for tempering water temperature at fixtures. Severe bodily injury
[i.e., scalding or chilling] and/or death may result depending upon system
water pressure changes and/or supply water temperature changes. A.S.S.E.
standard 1016 listed devices such as watts models L111 or MMV should used
at fixtures to prevent possible injury.The WATTS hot water tempering
valves are designed to be installedat or near the boiler or hot water
heater. They are not designed to compensate for system pressure and/or
temperature fluctuations and should not be used where devices tested to S.S.E.
standard 1016 are required. These WATTS valves should never be used to provide
"anti-scald" or "anti-chill"
Product Manufacturer: Watts Industries
Inc.Manufacturer Warranty:Watts Regulator
Company warrants each product against defects in material and workmanship for a
period of one year from the date of original shipment. In the event of such
defects within the warranty period, the Company will, at its option, replace or
recondition the product without charge. This shall constitute the exclusive
remedy for breach of warranty, and the Company shall not be responsible for any
incidental or consequential damages, including without limitation, damages or
other costs resulting from labor charges, delays, vandalism, negligence,
fouling caused by foreign material, damage from adverse water conditions,
chemicals, or any other circumstances over which the Company has no control.
This warranty shall be invalidated by any abuse, misuse, misapplication or
improper installation of the product. The company makes no other warranties
express or implied except as provided in this limited
Delivery Information: Please allow 3 to 5 business
days for orders to be processed, plus standard transportation delivery