Valve arrangement

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator

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Details

251 35, 251 37, 251 42, 251 43, F16K 31124

Patent

active

044934734

ABSTRACT:
"A poppet valve assembly includes a valving element in the form of a freely slidable poppet, a freely slidable pilot piston having an elongated integral pin extending axially toward the poppet, but unconnected thereto, and an integral elongated spear, with a frusto-conical portion, extending axially in the opposite direction. In a spool valve, the spool is the valving element and has the above elements at each opposite end of the spool, namely a pilot piston with an integral pin unconnected to the spool at the inner end of the pilot piston and an integral spear, with a frustro-conical portion at the outer end of the pilot piston".

REFERENCES:
patent: 2973746 (1961-03-01), Jupa
patent: 3177891 (1965-04-01), Reese
patent: 3612476 (1971-10-01), Leitgeb

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