Fluid pressure reduction

Details Fluid pressure reduction Fluid pressure reduction

1995-08-18

1998-03-24

Hepperle, Stephen M.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

137 14, 13750512, 137599, G05D 1602

Patent

active

057301662

ABSTRACT:
A fluid pressure reduction system includes at least two streams. A working stream includes valves with associated pressure sensors for modulating output pressure. A control system monitors pressure via a sensor and actuates a slam shut valve in the event of a fault. In the event that another stream is at fault the arrangement allows the slam shut valve to be opened. In the faulty stream only, pressure again rises, the slam shut is again shut and cannot be reopened until manually reset following fault clearance. Independent control in each stream assists in system integrity. All streams can close and reopen once. The second closure determines the faulty stream.

REFERENCES:
patent: 2694407 (1954-11-01), Jobson
patent: 4858640 (1989-08-01), Kaufmann

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