Position indicating check valve

Details Position indicating check valve Position indicating check valve

1999-07-28

2000-11-28

Lee, Kevin

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

137527, 137553, F16K 1500, F16K 3700

Patent

active

061521736

ABSTRACT:
A device for visually indicating a position of a check valve disc within the check valve is provided. The indicating device has an exposed element extending outside of the valve body to provide a visual indication of a position of the valve disc, an engaging element, connected to the exposed element, positioned within the valve body to engage the valve disc, a movable seal member to provide an interface between an interior of the valve body and an exterior of the valve body, with the engaging element and the exposed element being connected to the seal member, and a mechanism to hold the engaging element in contact with the valve disc. An electrical switch may be provided for detecting the position of the exposed element and for transmitting an appropriate signal.

REFERENCES:
patent: 3254660 (1966-06-01), Ray
patent: 4054153 (1977-10-01), Guyton
patent: 4669500 (1987-06-01), Strelow
patent: 5139048 (1992-08-01), Armstrong
patent: 5341840 (1994-08-01), Manson et al.
patent: 5746246 (1998-05-01), Yokota et al.

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