One way air admittance valve

Details One way air admittance valve One way air admittance valve

1990-05-25

1991-09-17

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137526, 4211, F16K 1508

Patent

active

050485628

ABSTRACT:
A one way air admittance valve (2) for admitting air into a pipe (3), which valve (2) comprises a body portion (4) for fitting to the pipe (3), at least one air inlet port (6) in the body portion (4), and rigid sealing means (16) which is longitudinally movable between a first position in which it seals the air inlet port (6) and a second position in which the air inlet port (6) is open for the admittance of air into the pipe (3), the valve (2) being such that there is only one sealing means (16) for all of the air inlet ports (6), and the sealing means (16) being such that it seals at two separate areas by engaging with a pair of lip seals (18,20) which are mounted on the body portion (4) and which are radially spaced apart by being positioned inwardly and outwardly of of the air inlet port (6).

REFERENCES:
patent: 3923081 (1975-12-01), Persson
patent: 4535807 (1985-08-01), Ericson
patent: 4867802 (1989-09-01), Earl

Affiliated with

Also associated with

Rating

One way air admittance 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 One way air admittance valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One way air admittance valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1909675