Constant-flow valve

Details Constant-flow valve Constant-flow valve

1984-12-10

1986-06-03

Nilson, Robert G.

Fluid handling

Removable valve head and seat unit

Retained by bonnet or closure

137504, 1375147, G05D 701

Patent

active

045923833

ABSTRACT:
A constant flow valve includes a valve body having an inlet portion, an outlet portion and a main valve body portion, the inlet portion and the outlet portion being connectable within the run of a fluid pipe line. The main valve body portion is interposed between the inlet portion and the outlet portion and has an open end, a cap member on the open end, and valve means disposed in the main valve body portion for maintaining a constant flow rate through the valve body means regardless of pressure differential between the inlet portion and the outlet portion. The valve means and the main valve body portion are constructed and arranged such that the valve means is removable from and replaceable in the main valve body portion by removing the cap member from the main valve body portion by passing the valve means through the open end of the main valve body portion, the valve means being removable from and replaceable in the main valve body portion while the valve body means remains connected within the run of the fluid pipe line.

REFERENCES:
patent: 419447 (1890-01-01), Hussey
patent: 1907162 (1933-05-01), Webb
patent: 2832371 (1958-04-01), LaBour
patent: 3156262 (1964-11-01), Attebo
patent: 3741242 (1973-06-01), Hansen

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