Valve apparatus

Details Valve apparatus Valve apparatus

1982-04-05

1984-09-18

Chambers, A. Michael

Fluid handling

Systems

Multi-way valve unit

251191, 251282, F17D 108

Patent

active

044718101

ABSTRACT:
A new and improved valve apparatus having an operating mechanism sealed in such a manner that the fluid pressure urging thereon produces offsetting or balancing forces to enhance ease of valve operation. To accomplish the force balancing, the flow closure means is continuously sealed to the valve housing and seat to produce the desired pressure responsive surfaces. By balancing the pressure forces, movement of the valve closure element between the open and closed positions with a minimum of operating force is accomplished. In addition the operating mechanism tubular flow closure element and valve seat having a plurality of opposed radially disposed flow opening are arranged so that the controlled flow through the openings into the seat impinges on itself to prevent flow cutting or erosion of the valve seat. When the flow closure element moves to the closed position, it activates a protected second seal on the seat to block flow throuh the flow openings.

REFERENCES:
patent: 878183 (1908-02-01), Brauner
patent: 2092819 (1937-09-01), Tennant
patent: 4041982 (1977-08-01), Lindner
patent: 4132386 (1972-01-01), Lee
patent: 4244388 (1981-01-01), Feiss

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