Process control valve apparatus

Details Process control valve apparatus Process control valve apparatus

1978-10-12

1980-08-12

Ruggiero, Joseph F.

Boots, shoes, and leggings

13762411, 137884, G06F 1520, F16K 1110

Patent

active

042176476

ABSTRACT:
A housing (11) which is intended for mounting on a process control valve (5) contains electric circuits (3) and means (4) controlled by these circuits for converting electric control signals into operating signals which operate the valve via a cylinder. The electric control signals are supplied via a serializing terminal (7) from the computer (1) of a process control system which includes a plurality of process control valves (5). The housing has a single interconnection (14) with a cable (8) common to several process control valves for transmitting the control signals and for supplying the electric circuits with power. The housing moreover has a single connecting socket (13) to permit coupling the housing to a pressure air line common to a plurality of valves (5).

REFERENCES:
patent: 3589387 (1971-06-01), Raymond
patent: 3785389 (1974-01-01), Friedland et al.
patent: 3878376 (1975-04-01), Sholes, Jr. et al.
patent: 4074354 (1978-02-01), Nakagawa et al.
patent: 4095864 (1978-06-01), Hardin

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