Two way latching trip valve

Details Two way latching trip valve Two way latching trip valve

1988-03-18

1990-10-09

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

137458, 251 63, 251359, F16K 31122

Patent

active

049615602

ABSTRACT:
A latching trip valve for opening and closing a safety device. The trip valve is operable manually and from the pressure of a pilot circuit which monitors the operating conditions of a pipeline. A floating seat is movable under the influence of a longitudinal movable poppet and its included seal means. The floating seat and seal means forms a closed passage until the pressure of the pilot circuit decreases whereas the passage is opened.

REFERENCES:
patent: 3016917 (1962-01-01), Hunt
patent: 3083726 (1963-04-01), Woelfel
patent: 3646969 (1972-03-01), Stampeli
patent: 4026326 (1977-05-01), Wells et al.
patent: 4071046 (1978-01-01), Cates
patent: 4175587 (1979-11-01), Chadwick et al.

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