Bottom operable tank car valve

Details Bottom operable tank car valve Bottom operable tank car valve

1974-10-08

1976-09-21

Cline, William R.

Valves and valve actuation

With correlated flow path

Tank

251291, 137544, 137797, F16K 148

Patent

active

039814815

ABSTRACT:
A bottom outlet for tanks is provided including a valve body welded to an opening in the bottom of the tank. The valve body has an opening into which a retainer assembly is fitted to urge a seal into engagement with at least a portion of the valve body. The retainer assembly includes a threaded center portion and a retainer vertical portion having an opening therein. A valve plug is mounted to be vertically movable between closed and open positions, into and out of engagement with the retainer vertical portion. A lower housing is affixed to the valve body with mechanical fasteners which define a first shear plane. The housing has an opening into which a valve operator assembly is mounted. The valve operator assembly includes a first valve operator having a lower tool connection and a first operator extension. The first operator extension has a first valve operator opening into which a second valve operator is inserted and is drivably engaged. The second valve operator includes a second shear plane and has threads which engage the threads in the threaded center portion of the retainer assembly. These threads may define the second shear plane. The second valve operator engages the valve plug, and moves the same between closed and open positions. A seal member is affixed to the valve plug or to the retainer vertical portion.

REFERENCES:
patent: 1523484 (1925-01-01), Lindstrom
patent: 1556000 (1925-10-01), McBride
patent: 2083054 (1937-06-01), Cline
patent: 2092926 (1937-09-01), Lithgow
patent: 2567426 (1951-09-01), Ferrari
patent: 2696083 (1954-12-01), Eddy
patent: 3104554 (1963-09-01), Mueller et al.
patent: 3199534 (1965-08-01), Shaw et al.
patent: 3591131 (1971-07-01), Carlson
patent: 3656710 (1972-04-01), Shaw

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