Tank car botton valve

Details Tank car botton valve Tank car botton valve

1991-06-03

1991-12-31

Chambers, A. Michael

Valves and valve actuation

With correlated flow path

Tank

251 78, 251291, F16K 5100

Patent

active

050765396

ABSTRACT:
A bottom outlet valve for a tank on a vehicle, especially for a railway tank car. The valve comprises a valve body including a valve seat, a valve stem spring biased toward the closed position against the seat and an operator assembly for mechanically opening and closing the valve stem. The operator assembly may be removed from the valve body in an improved facile manner by means of bolts all located exterior of the operator housing. A lost motion linkage allows the stem to seat under spring pressure even though the stem seals have become worn. The assembly has been uniquely designed to permit easier and safer installation and maintenance of the valve due in part to an improved stem cage assembly.

REFERENCES:
patent: 1284063 (1918-11-01), Davis, Jr. et al.
patent: 1749119 (1930-03-01), Wilson
patent: 3420495 (1969-01-01), Muehl
patent: 3656710 (1972-04-01), Shaw
patent: 4194523 (1980-03-01), Lubieniecki
patent: 4269220 (1981-05-01), Rehbein
patent: 4280679 (1981-07-01), Shaw
patent: 4312373 (1982-01-01), Tilling et al.
Midland Manufacturing Corporation, Bottom Outlet Valve, Drawing No. A-549 w/Installation and maintenance Instructions-11/15/78.

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