Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1981-06-05
1983-08-02
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
F16K 1504
Patent
active
043960359
ABSTRACT:
A back pressure valve includes a tubular body having pin and box connections at its outer ends and formed of two tubes connected by double step straight threaded connectors with a seat ring captured between the two tubes. A ball is urged against the seat ring by a helical compression spring. A triple slotted tubular spring support is screwed into the outlet portion of the body. A hex headed cylindrical post at the upper closed end of spring support fits snugly but slidably with the spring and centers the spring. The dimensions of the spring and spring support are such as to prevent the spring from buckling. The flow path through the slots and around the support is as large as that through the seat ring, which is about equal to that through the pin connectors of the body tubes, whereby the wall thickness of the pin connectors is large. The support can be removed with a socket wrench. A release tool can depress the ball off its seat to release fluid pressure.
REFERENCES:
patent: 1305964 (1919-06-01), Dickson
patent: 1659047 (1928-02-01), Quinn
patent: 1931938 (1933-10-01), Pippin
patent: 2128352 (1938-08-01), Creighton
patent: 2293259 (1942-08-01), Johnson
patent: 2322139 (1943-06-01), Kaelin
patent: 2611045 (1952-09-01), Wayman
patent: 3494417 (1970-02-01), Fredd
patent: 3768506 (1973-10-01), McGill
patent: 3799278 (1974-03-01), Oliver
patent: 3802521 (1974-04-01), Oliver
Practical Drilling, vol. 1, Blowout Prevention, W. C. Goins, Jr., Gulf Publishing Company, Houston, TX.
Composite Catalog, published by World Oil, A Gulf Publishing Company, vol. 4, p. 5972.
Nilson Robert G.
Whiting Oilfield Rental, Inc.
LandOfFree
Back pressure valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Back pressure valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back pressure valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-479660