Double disc gate valve with entrapped stem connection

Details Double disc gate valve with entrapped stem connection Double disc gate valve with entrapped stem connection

1975-08-18

1976-11-23

Weakley, Harold W.

Valves and valve actuation

Valve head movably connected for accommodation to seat

With universal connection

251267, 251327, 251328, 251329, F16K 2500

Patent

active

039932850

ABSTRACT:
A gate valve includes a pair of identically shaped tapered discs defining a tapered self-locking axially translatable gate wherein each disc has an annular hardened seating surface which engages the mating surfaces on the valve body adjacent the flow ports. Tongues on the sides of the discs ride in vertical grooves on the valve body as the gate travels between a raised open and a lowered closed position. The discs of the gate are provided with a slot transverse to the flow ports which captures a T-head on the stem assembly, the slot being positioned in the gate interior radially within the seating contact area to thereby reduce the overall height of the valve.

REFERENCES:
patent: 1922190 (1933-08-01), Atterbury
patent: 2868495 (1959-01-01), Lucas
patent: 2905192 (1959-09-01), Velan
patent: 3282559 (1966-11-01), Bredtschneider
patent: 3400441 (1968-09-01), Fryling
patent: 3463446 (1969-08-01), Natho

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