Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent
1992-02-27
1993-08-10
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
137478, F16K 1710
Patent
active
052340236
ABSTRACT:
A pressure relief valve including a valve member movable between open and closed positions to control fluid flow. A body member is provided which receives a piston operatively connected to the valve member for operating same. The piston defines a first chamber in the valve body extending above the piston and a second chamber extending below the piston. System fluid is introduced into the chambers and the differential fluid pressure in the chambers applies a loading force to the piston, and therefore to the valve member in its closed position. When the system pressure, and therefore the pressure in the chambers, exceeds a predetermined amount the pressure in one of the chambers is vented, causing the piston to move to an open position and permit opening movement of the valve member.
REFERENCES:
patent: 46142 (1865-01-01), Riordan
patent: 231214 (1880-08-01), Curtis
patent: 1155076 (1915-09-01), Melcher
patent: 1231280 (1917-06-01), Metten
patent: 1364061 (1920-12-01), Jones
patent: 1893462 (1933-01-01), Wait
patent: 2227629 (1941-01-01), Cannon
patent: 2274663 (1942-03-01), Brisbane
patent: 2905432 (1959-09-01), Mercier
patent: 3211174 (1965-10-01), Weise
patent: 3238966 (1966-03-01), Howard et al.
patent: 4019125 (1977-04-01), Daniel
patent: 4130130 (1978-12-01), Stewart
patent: 4210214 (1980-07-01), Blanton
patent: 4250913 (1981-02-01), Scull
patent: 4284212 (1981-08-01), Caswell
patent: 4595033 (1986-06-01), Walsh, Jr.
patent: 4722361 (1988-02-01), Reip
patent: 4791955 (1988-12-01), Reip
patent: 4858642 (1989-08-01), Fain, Jr.
patent: 4881571 (1989-11-01), Reip
patent: 4917144 (1990-04-01), Giles
patent: 4958656 (1990-09-01), Patel
patent: 4966184 (1990-10-01), Giles
patent: 5009246 (1991-04-01), Giles
Dresser Industries
Nilson Robert G.
LandOfFree
Pressure relief valve with auxiliary loading device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure relief valve with auxiliary loading device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure relief valve with auxiliary loading device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1719235