Cla-Val 210-01 and 610-01 Altitude Valves control the high water level in reservoirs without the need for floats or other devices. They are non-throttling valves that remain fully open until the shut-off point is reached. These valves are designed for one-way flow only.

These valves can also be furnished with auxiliary controls to meet the need for multiple functions, such as pressure sustaining, pressure reduction, rate of flow control, solenoid override, etc.

Used on reservoirs where the water is withdrawn through a separate line or through a bypass equipped with a check valve. The valve opens to refill the reservoir when the water lowers below the shut-off level. For more information see data sheet E-CDS6A.