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Automatic Control Valves

LFM127-3 , LFM1127-3

Two-Way Flow with Delay Open for Return Flow

Lead Free* Models Available


The Watts Two-Way Flow Altitude Valve with Delayed Open for Return Flow Feature is designed to control the maximum water level in elevated water storage tanks and to allow flow from the tank back into the water system after the system water pressure has fallen below the elevated storage tank shut-off head pressure by an adjustable amount of pressure.

Specify Tank height PRIOR to ordering.

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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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*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

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