Reverse-acting diverter valve

Details Reverse-acting diverter valve Reverse-acting diverter valve

1992-01-06

1992-10-06

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

137312, 13762548, F16K 11048

Patent

active

051523205

ABSTRACT:
A diverter valve for controlling a fluid flow without the sudden hammering pressure changes normally found in fluid control systems, and a method for assembling the valve. The valve includes a modular valve body with two substantially identical sections, each with a valve seat, oppositely arranged. The valve body also includes a T-shaped connecting section connected between the end openings of the two other sections. A valve stem shaft in the valve body has a two valve plugs facing together, with the two valve seats between the valve plugs, so that each valve plug moves against the flow of the fluid to a closed position. A valve actuator shifts the valve stem shaft axially between first and second positions so that first one plug is closed, and then the other. The second valve plug is removably attached to the shaft by means of a tube connected to the second valve plug. This tube slides over one end of the valve stem shaft until it contacts a shoulder, and attaches to the valve stem shaft in that position. The end onto which the tube is slid is threaded, and a nut is applied to threads after the tube is applied to the shaft. The tube has openings for permitting any leakage between the second valve plug and the shoulder to be easily detected.

REFERENCES:
patent: 3779280 (1973-12-01), Evans et al.
patent: 3902526 (1975-09-01), Brake et al.
patent: 4924911 (1990-05-01), Schmalenbach

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