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- S127 Series Altitude Control Valves > S127-8, S1127-8
One-Way Flow with Pressure Sustaining
Lead Free* Models Available
The WATTS ACV One Way Flow Altitude Valve with Pressure Sustaining Feature is designed to open, allowing flow into a reservoir or elevated storage tank (tank fill), and close drip tight when high water level is achieved. The valve also throttles to sustain a minimum upstream pressure during tank filling operations. It controls water level by remotely sensing static tank head pressure through a field installed sensing line, and opens when the water level is below the adjustable setpoint and closes drip tight when the level is above the adjustable setpoint.
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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.