Hydraulic damping means for hinged check valve

Details Hydraulic damping means for hinged check valve Hydraulic damping means for hinged check valve

1975-03-06

1976-03-09

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137554, 251 54, 251291, F16K 2110

Patent

active

039425517

ABSTRACT:
An improved hydraulic control means for check valves to prevent slamming of a clapper against a seat. The clapper of the check valve is connected via a crosshead to an hydraulic cylinder and a piston contained therein controls the closing of the check valve. The hydraulic cylinder has means restricting flow of fluid from below the piston in the hydraulic cylinder to above the piston in the hydraulic cylinder, but permits unrestricted flow in the opposite direction. Relief valves are included to prevent overpressurization in the hydraulic cylinder. A precharged accumulator allows for fluid expansion and contraction in the hydraulic cylinder, plus replacing fluid lost by leakage.

REFERENCES:
patent: 2830859 (1958-04-01), Parsons
patent: 2976961 (1961-03-01), Mead
patent: 3147827 (1964-09-01), Weisheit
patent: 3176801 (1965-04-01), Huff
patent: 3177894 (1965-04-01), Camp
patent: 3427930 (1969-02-01), Roberts et al.
patent: 3706321 (1972-12-01), Vicari
patent: 3789872 (1974-02-01), Elliott

Affiliated with

Also associated with

Rating

Hydraulic damping means for hinged check 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 Hydraulic damping means for hinged check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic damping means for hinged check valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-826107