Bi-directional flow control device

Details Bi-directional flow control device Bi-directional flow control device

1985-05-20

1986-06-24

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

188280, 188282, 18832215, F16F 919, F16K 1718

Patent

active

045962707

ABSTRACT:
A bidirectional relief valve is provided which has a slidable valve element provided with first and second groups of ports which are positioned on opposite sides of a fixed port in the valve body when the slidable valve element is in a neutral position. The valve element may be moved in either direction from the neutral position in response to the differential pressure across the damping head under selected conditions of preload which may be different in each direction. The movable valve element includes a stem portion of relatively small diameter and a larger diameter head portion in which the first and second ports are located. In order to prevent an excessive pressure build up, or overshoot, in response to a shock wave of large magnitude in either direction, the movable valve element is given an initial acceleration by employing the relatively large area of the valve head. However, as soon as the valve element has been initially accelerated the area which is effective to move the valve element is reduced to the area of the stem. With this arrangement, the pressure can be brought to the desired steady state value without causing an undesired initial pressure overshoot.

REFERENCES:
patent: 3483952 (1969-12-01), Cardwell
patent: 4503882 (1985-03-01), Brunner

Affiliated with

Also associated with

Rating

Bi-directional flow control 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 Bi-directional flow control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi-directional flow control device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2081641