Aqua Environment 1018-120 Sequence Valve, 1/4" NPT, 120PSI Bias

Aqua Environment, 1018-120, Sequence Valve for Automatic Cascading, 1/4" NPT, 120 PSI Bias

Feature:

• The model 1018 valve is an open-shut valve having two control pressure ports.
• When pressure is applied to the top port the valve opens.
• When pressure is applied to the side control port the valve closes.
• When no pressure or equal pressures up to 6000 PSI are applied to both control ports the valve is held open by a bias spring.
• The standard valve has about 250 PSI open bias however other springs can be provided for 0 to 400 PSI bias.
• Its primary function is control of cascade systems used for such purposes as filling breathing air cylinders and vehicle CNG (compressed natural gas) tanks.

Used between a compressor and cascade system of storage tanks the 1018 valve can be used to fill the highest pressure bank first, then the next highest etc without operator assistance. Here the 1018 valve permits the compressor to operate at the pressure of the bank being filled rather than the maximum system pressure as is the case with simple priority or back pressure valves. When used between the storage banks and tank being filled the 1018 valve can deliver gas from the lowest pressure bank until equalized, then the next higher pressure bank etc without operator assistance. The factory can be consulted for application details. A one inch thread section is provided on the end permitting a way to mount the valve.