Watts Mixing ValveLF70A-F-075 - 3/4 Inch
Lead-Free70A Hot Water Extender Tempering ValveSeries 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 Warranty:• 1-Year Limited Factory Warranty - see warranty details below Maximum Pressure: 150psi [10 bars]Series 70A temperature range: 120°F to 160°F_______________________________________________________
HELP » Installation Manual[PDF Format]Caution: Periodic inspection by a licensed contractor is recommended. Corrosive water conditions, temperatures over 210°F [99°C], unauthorized adjustments or repair could render the valve ineffective for service intended. Regular checking and cleaning of thermostat assembly helps to assure maximum life and proper product function. Frequency of cleaning depends upon local water conditions.
Watts 70A Series Troubleshooting Guide
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" service._______________________________________________________ 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 warranty._______________________________________________________ Delivery Information: Please allow 3 to 5 business days for orders to be processed, plus standard transportation delivery time.