Pre-loaded valve follower sealing apparatus

Details Pre-loaded valve follower sealing apparatus Pre-loaded valve follower sealing apparatus

1987-05-20

1988-07-26

Chambers, A. Michael

Valves and valve actuation

Reciprocating valve

Gate

251174, F16K 320

Patent

active

047595299

ABSTRACT:
The improved pre-loaded valve follower sealing apparatus comprises a follower ring and flange insert assembly. The assembly includes a pair of hollow cylinders compressively containing a follower preload and sealing element. That follower preload and sealing element is substantially annular in shape, but has an interior fluid contacting surface which is concave in transverse cross-section when not under compression, but which is rendered substantially smoothly cylindrical when placed under compression.

REFERENCES:
patent: 2777664 (1957-01-01), Bryant
patent: 3164363 (1965-01-01), Williams
patent: 3353784 (1967-11-01), Grove
patent: 4113233 (1978-09-01), Bond
patent: 4124194 (1978-11-01), Alvarez
patent: 4479670 (1984-10-01), Gabler
patent: 4483511 (1984-11-01), Koshida

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