Soft seat Y pattern globe valve

Details Soft seat Y pattern globe valve Soft seat Y pattern globe valve

1986-08-11

1987-08-25

Nilson, Robert G.

Valves and valve actuation

Sequential opening or closing of serial ports in single flow...

251332, F16K 144

Patent

active

046887571

ABSTRACT:
A globe valve (10) is disclosed which reduces the pressure drop across a soft seal (38) as it moves into and out of engagement with a seal surface (24) on the valve body (12) to reduce the wear effect of the pressure drop, particularly in control of gas flow with maximum pressures of approximately 6000 psi. A hard seal (28) is resiliently mounted on the valve stem (20) to engage the valve seal surface of the valve body prior to engagement of the soft seal to reduce the pressure drop across the soft seal.

REFERENCES:
patent: 75670 (1868-03-01), Douglas
patent: 2403028 (1946-07-01), Smith
patent: 2595012 (1952-04-01), Smith
patent: 2936154 (1960-05-01), Von Platen et al.
patent: 3084903 (1963-04-01), Parks
patent: 3549121 (1970-12-01), Mercier
patent: 3960364 (1976-06-01), Hargrave
patent: 4076212 (1978-02-01), Leman
patent: 4228987 (1980-10-01), Potter

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