Direct acting hydraulic trip block

Details Direct acting hydraulic trip block Direct acting hydraulic trip block

2006-10-16

2008-08-12

Lee, Kevin L (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

C137S884000, C137S553000

Reexamination Certificate

active

07409965

ABSTRACT:
A direct acting hydraulic voting trip block defines three separate paths between an inlet and an outlet port. Each path is intersected by a valve cylinder. Valve pistons in each valve cylinder are configured, in the activated position, to block two of thee different paths. As long as at least two of the pistons are in the activated position, communication between the inlet and outlet ports is prevented.

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