Combination tank car valve skid and valve seat

Details Combination tank car valve skid and valve seat Combination tank car valve skid and valve seat

1977-12-15

1980-01-22

Cline, William R.

Valves and valve actuation

With correlated flow path

Tank

137350, 1373825, 105358, F16K 3500, B61D 500

Patent

active

041846630

ABSTRACT:
In a bottom operable tank car lading valve assembly, a combination skid and lading valve seat for the lading valve closure is provided, which is attached to the tank car universal flange with mechanical fasteners. The valve seat portion extends inwardly and upwardly from the universal flange and includes a machined seat. The skid portion extends upwardly and outwardly from the universal flange, forming a circumferential taper, and the upper portion abuts the bottom of the tank. The skid portion protects the lading valve closure and the lading valve seat against impacts which might normally cause unseating of the valve closure and escape of the lading in the absence of the skid portion.

REFERENCES:
patent: 928924 (1909-07-01), Ames
patent: 1500918 (1924-07-01), Bolton et al.
patent: 1552632 (1925-09-01), Miller
patent: 3662692 (1972-05-01), Price
patent: 4121614 (1978-10-01), Reedy

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