Working principle:
Altitude Valve controls the high water level in reservoirs without the need for floats or other devices. It is a non-throttling valve that remains fully open until the shut-off point is reached. This valve closes at a high water level. Water is withdrawn from the reservoir through a separate discharge line or through a check valve located in a by-pass line around the altitude valve.

The valve delays opening until the water in the reservoir lowers to a desired level. The low level is adjustable from 1 to 15 feet from the high water shut-off point. This valve is hydraulically operated and pilot controlled. The pilot control operates on the differential in forces between a spring load and the water level in the reservoir. When the force of the spring is overcome by the force of the reservoir head, the pilot closes the main valve. The desired high water level is set by adjusting the spring force. The pilot control measures the reservoir head through a customer supplied sensing line* connected directly to the reservoir.

 

Technical parameters:
Nominal Model: DN50-DN600
Nominal Pressure: PN16 N25
Applicable Temperature: 0℃-80℃
Applicable Medium: Water
Nominal Pressure: 1.0Mpa-2.5Mpa
Design Standard: JB/T 10674-2006
Test Standard: GB/T13927-2008