Flow control valve with enhanced flow control piston

Details Flow control valve with enhanced flow control piston Flow control valve with enhanced flow control piston

1993-10-26

1995-01-24

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

G05D 701

Patent

active

053834895

ABSTRACT:
A flow control valve (10) is provided including a valve body (20) and a piston (16). The valve body (20) has extending therethrough a longitudinal bore (18) defining a first flow passage (32). The piston (16) is slidably disposed within the bore (18) to vary the flow area of a fluid flow through the control valve (10). The piston (16) contains a second flow passage (28) defined by a side wall (68) and an end wall (70). The side wall (68) has at least one longitudinal flow channel (24) with a first orifice (26) extending therethrough. The piston (16) preferably slides within the longitudinal bore (18) to vary the flow area of the first flow passage (32) such that the fluid flow through the control valve (10) is substantially constant over a selected range of pressure differentials across the control valve (10).

REFERENCES:
patent: 3015341 (1962-01-01), Hedland et al.
patent: 3130747 (1964-04-01), Benaway
patent: 3131716 (1964-05-01), Griswold et al.
patent: 3339580 (1967-09-01), Cutler et al.
patent: 3599667 (1971-08-01), Kaser
patent: 3752183 (1973-08-01), Griswold
patent: 3752184 (1973-08-01), Griswold
patent: 3756272 (1973-09-01), Hammond
patent: 4766928 (1988-08-01), Golestaneh
patent: 5054516 (1991-10-01), Okerblom
patent: 5174330 (1992-12-01), Golestan et al.

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