Throttling gasket insert for use with knife gate valve

Details Throttling gasket insert for use with knife gate valve Throttling gasket insert for use with knife gate valve

1987-05-20

1989-01-17

Rosenthal, Arnold

Valves and valve actuation

With selective flow regulation

251326, 251328, 137375, F16K 332, F16K 302

Patent

active

047983655

ABSTRACT:
A throttling gasket insert (34) for attaching a knife gate valve (10) into a pipe string is constructed of a single piece of resilient gasket material having a washer-shaped flange portion (36), to be clamped between a facing surface (52) of a knifegate-valve face plate (26) and a pipe flange (60), and a tubular portion (42), extending through a knife-gate valve flow passage (22) to a knife-gate blade (12) thereof, having a V-shaped passage therethrough.

REFERENCES:
patent: 2002965 (1935-05-01), Smith
patent: 2883148 (1959-04-01), Williams
patent: 3105620 (1963-10-01), Atkins et al.
patent: 3542338 (1970-11-01), Scaramucci
patent: 3548864 (1970-12-01), Handley et al.
patent: 4009727 (1977-03-01), Bailey
patent: 4377274 (1983-03-01), Mayhew
patent: 4646407 (1987-03-01), Mayhew
Bulletin 30.00-1 of Jun., 1981--DeZurik Series L Knife Gate Valves.
Rovalve Figure 20--Bonnetless Knife Gate Valve Fabri-Valve Cat. 600--Seating Options.

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