Drain valve

Details Drain valve Drain valve

1987-11-04

1988-09-06

Schwadron, Martin P.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137494, 137495, F16T 116

Patent

active

047685425

ABSTRACT:
A piston (36) divides the valve interior into a main chamber (38) and a sensing chamber (40). A fixed valve seat (26) sealingly engages the piston (36) to close communication between the chambers (38, 40). The seat (26) is carried by an axial stem (20) which extends through an opening (42) in the piston (36). The valve inlet (14) extends through a passageway (22) in the stem (20) into the main chamber (38). An outlet (28) is formed in the main chamber (38). A valve element (62) closes the outlet (28). When pressure is higher in the main chamber (38) than in the sensing chamber (40), the piston moves toward the sensing chamber (40) to open communication between the chambers (38, 40). When there is a pressure drop in the main chamber (38), the piston (36) moves toward the main chamber (38) to open communication between the chambers ( 38, 40) and move the valve element (62) into an open position. A flange (46) caried by the piston (36) engages a flange (80) formed on a hat-shaped retainer (72) to which the valve element (62) is attached. The valve (8) preferably has a manual drain lever (88).

REFERENCES:
patent: 2041906 (1936-05-01), Czarnecki
patent: 2125144 (1938-07-01), Aikmar
patent: 2248850 (1941-07-01), Campbell
patent: 2626655 (1953-01-01), Trautman et al.
patent: 2693821 (1954-11-01), Cornelius
patent: 2958394 (1960-11-01), Woodmansee
patent: 2986159 (1961-05-01), Snyder
patent: 3027905 (1962-04-01), Dobrikin
patent: 3175572 (1965-03-01), Kauer et al.
patent: 3311124 (1967-03-01), Gates et al.
patent: 3498056 (1970-03-01), Avery
patent: 3516430 (1970-06-01), Valentine
Pp. 5 and 6 of Jun. 1, 1977 parts catalogue of Wagner Electric Corporation, Parsippany, N.J.
Packing insert for "Speedaire".TM. valve, Model 2Z166, distributed by Dayton Electric Mfg. Co., Chicago, Illinois; distributed prior to Oct. 1984, exact date unknown.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1601209