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70A, L70A

Hot Water Extender Tempering Valves for Residential Installations


Replacement Product: LF70A, LFL70A


1/2 to 3/4 in. (15 to 20mm)


Series 70A, L70A 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. It features Lead Free* brass body construction, dial adjustment cap, replaceable thermostat, stainless steel spring and is available with either threaded or solder end connections . Series LF70A temperature range: 120°F to 160°F. Series LFL70A temperature range: 100°F to 130°F. Maximum Pressure: 150psi (10 bar).

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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Additional Information

Danger – Scalding Lurks!

Every year, thousands of people suffer serious thermal shock or scalding injuries in their bathtubs, sinks and showers.

Click here for informative resources to help you protect against these dangers.

Learn About

Thermostatic Mixing Valves

Every year thousands suffer injuries as a result of hot water scalding and thermal shock injuries. Thermostatic mixing valves protect against these dangers.

To learn more about thermostatic mixing valves and how they work, click here.