Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1991-05-09
1992-08-25
Hepperle, Stephen M.
Fluid handling
Processes
Cleaning, repairing, or assembling
1373291, 1374546, 137474, F16K 4300
Patent
active
051410125
ABSTRACT:
A relief valve system which is made up of a valve bowl with inlet housing, a relief valve cartridge, a stop valve system, a releasable securement system, and a manual by-pass valve. The relief valve cartridge is a self-contained relief valve which is easily inserted into a reception area formed in the inlet port housing so as to be in line with the inlet port leading to a high pressure source. The stop valve system includes a spring biased poppet valve with a contact shroud that is placed in contact with the upstream end of the cartridge when the cartridge is inserted into the reception area. When the cartridge is inserted the stop valve is in a non-sealing state with respect to the inlet port. When the cartridge is removed the stop valve shifts to a sealing position. At the time a cartridge is removed for servicing a pretested cartridge is inserted in place of the removed cartridge. A by-pass valve is provided to equalize the pressure differential on the stop valve when the replacement cartridge is being inserted into the reception area.
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Hepperle Stephen M.
Teledyne Industries Inc.
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