Circuit for automatically sequencing a valve mechanism

Details Circuit for automatically sequencing a valve mechanism Circuit for automatically sequencing a valve mechanism

1982-09-29

1984-12-25

Truhe, J. V.

Electricity: motive power systems

Automatic and/or with time-delay means

Time or with time-delay means

318467, 318490, G05B 1118

Patent

active

044906587

ABSTRACT:
A solid state circuit for sequencing a valve mechanism from its normal operating position through a sequence of cycles to blow down various different lines of the network to which the valve mechanism is connected. The circuit may be set to initiate its sequence at one of a number of time periods such as once a day or once a week. Once initiated, the circuit operates a motor drive for the valve mechanism continuing for a timed interval followed by a delay or dwell at each blow down position. A signal is provided to indicate that the circuit is about to enter a blow down sequence followed by the sequence itself. Various alarms and safeguards are provided for the sequence.

REFERENCES:
patent: 3257598 (1966-06-01), Settles
patent: 3394292 (1968-07-01), Flum
patent: 3780360 (1973-12-01), Hempell
patent: 3881144 (1975-04-01), Kikuchi
patent: 3914676 (1975-10-01), Madonian
patent: 3928846 (1975-12-01), Arai

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