Ames Fire & Waterworks 972GS Stainless Steel On-Off Float Valve (4 and Smaller) - Manual

01/06
970 Series Model
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.amesfirewater.com
972
672
ON-OFF FLOAT VALVE
(4” and Smaller)
Operation
The AMES Model 972 / 672 On-Off Float Control Valve is designed to open fully or close drip-tight as
commanded by the Float Control Pilot. The Float Pilot may be either valve or remote mounted. The valve
closes drip tight when water level reaches the adjustable high-level setpoint, and opens fully when water
level is below the adjustable low-level setpoint, allowing a calculated “draw-down” of water level to increase
tank circulation. The On-Off Float Pilot commands the routing of fluid and pressure into and out of the
cover chamber of the main valve. When water level reaches the adjustable high-level setpoint, the Float
Pilot connects the cover chamber of the valve to upstream pressure, closing the valve drip tight. The valve
remains closed as water level decreases. When water level reaches the adjustable low-level setpoint, the
Float Pilot connects the cover chamber of the valve to atmosphere (wet drain), opening the valve fully. High
and low levels are separately adjustable by positioning stop collars on the float rod(s) at desired opening
and closing setpoints.
If desired, the on-off action of the valve can be “reversed” by modifying the hydraulic connections of the On-
Off Float Pilot.