Valves having a pressure equalizer across dual face seals

Details Valves having a pressure equalizer across dual face seals Valves having a pressure equalizer across dual face seals

1978-07-14

1979-12-11

Weakley, Harold W.

Fluid handling

Systems

Multi-way valve unit

137629, 13763012, F16K 1107

Patent

active

041778332

ABSTRACT:
A valve has upstream and downstream seat assemblies each having a pair of spaced annular face seals in concentric relation to form inner and outer face seals. A movable valve member (26, FIG. 2; 88, FIG. 8) has a main bore therethrough and is mounted in a valve chamber between the seat assemblies for movement between open and closed positions. A pair of auxiliary fluid passageways (72, 74, FIG. 2; 112, 114, FIG. 8) are located in the valve member at opposite ends of the main bore. Each of the auxiliary passageways has its outer end opening to the side of the valve member radially outward of the main bore and an inner end opening into the main bore. Upon opening of the valve the valve member is temporarily positioned so as to locate the outer end of each auxiliary passageway between the associated face seals so fluid can leak past the inner face seal on the upstream seat assembly into the area between the inner and outer seals, thence flow through one auxiliary passageway into the main bore and valve chamber, and then through the other auxiliary passageway to leak past the outer face seal at the downstream seat assembly to the downstream side of the valve. This fluid motion functions to equalize and reduce the pressure differential across the valve before the valve member is moved to the open position with the main bore moving across both face seals of the seat assemblies.

REFERENCES:
patent: 3035595 (1962-05-01), Beason
patent: 3036600 (1962-05-01), Vickery
patent: 3314448 (1967-04-01), Wolff
patent: 3534764 (1970-10-01), Natho
patent: 3780982 (1973-12-01), Kemp

Affiliated with

Also associated with

Rating

Valves having a pressure equalizer across dual face seals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valves having a pressure equalizer across dual face seals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valves having a pressure equalizer across dual face seals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-306025