Cleanout fitting with lockable and removable check valve

Details Cleanout fitting with lockable and removable check valve Cleanout fitting with lockable and removable check valve

1978-12-08

1981-04-07

Goldberg, Gerald

Fluid handling

Line condition change responsive valves

Direct response valves

1375272, F16K 1500

Patent

active

042599830

ABSTRACT:
A cleanout fitting has a tubular body adapted to be connected between a pair of conduits and having an upwardly open well defined between the upstream and downstream end of the body. This tubular body is formed internally with a downward upstream step and a downward downstream step. At its upstream step the body is also formed with a downwardly U-shaped abutment forming a downstream-facing upstream insert seat. At its downstream step the body has a plurality of ridges defining an upwardly open U-shaped seat. Inserts, normally check valves, have rings receivable in these seats and each have a valve flap engageable with the respective ring. A cover is sealingly engageable over the well, and also serves to hold at least the downstream insert in place in the respective seat.

REFERENCES:
patent: 650789 (1900-05-01), Losch
patent: 943451 (1909-12-01), Parker
patent: 1052633 (1913-02-01), Whiteman
patent: 2388395 (1945-11-01), Duggan
patent: 4141381 (1979-02-01), Eminger

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