Valve operating system

Details Valve operating system Valve operating system

1986-10-17

1988-01-12

Cohan, Alan

Fluid handling

Systems

Programmer or timer

361156, 361167, 13762564, 13762565, F16K 3102

Patent

active

047184540

ABSTRACT:
The system is particularly suitable for controlling a solenoid valve SV1 having two stable operating positions in accordance with programmed `on` and `off` periods set at a 24 hour timer 10. The valve typically in one position connects a gas supply to a regulator ensuring the latter then supplies gas at a higher pressure; and in the other position connects the regulator to atmosphere through a vent stack so that the regulator then supplies gas at a lower pressure. The system is powered by 3 volt batteries B1, B2 and has extremely lower current consumption giving a battery life of 5-6 years. The solenoid 18 is energised briefly by voltage pulses fed from a capacitor C5 via a reversing switch 16. Automatic battery voltage checking is incorporated.

REFERENCES:
patent: 3200591 (1965-08-01), Ray
patent: 3203447 (1965-08-01), Bremner et al.
patent: 3547154 (1970-12-01), Benham
patent: 3975666 (1976-08-01), Redding
patent: 4245671 (1981-01-01), Kosugui
patent: 4253493 (1981-03-01), English
patent: 4304989 (1981-12-01), Vos et al.
patent: 4527216 (1985-07-01), Stammely
patent: 4533972 (1985-08-01), Obashi
patent: 4534539 (1985-08-01), Dettmann
patent: 4538129 (1985-08-01), Fisher

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