JPS61143041U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing a preferred embodiment of the swing-out prevention device for a filter differential pressure gauge according to the present invention, and FIG. 2 is a schematic configuration diagram showing the structure of a connecting part of a conventional filter differential pressure gauge. . In the figure, 11 is a filter, 15 is a differential pressure gauge, 16 is an upstream pressure introduction pipe, 17 is a downstream pressure introduction pipe, 1
8 is a bypass pipe, 19 is a check valve, and 20 is a throttle section.

Claims (1)

[Scope of utility model registration request] In a device for preventing swing-out of a differential pressure gauge that detects the difference in fluid pressure between the upstream side and the downstream side of a filter, the upstream pressure causes the fluid pressure on the upstream side and downstream side of the filter to be introduced into the differential pressure gauge, respectively. The introduction pipe and the downstream pressure introduction pipe are connected by a bypass pipe, and the upstream pressure introduction pipe between the connection part of the bypass pipe and the differential pressure gauge is provided with a constriction part that reduces the pipe cross-sectional area, and the bypass For a filter, characterized in that the pipe is provided with a check valve that opens the bypass pipe when the differential pressure between the pressure in the upstream pressure introduction pipe and the pressure in the downstream pressure introduction pipe exceeds a set value. A swing-out prevention device for differential pressure gauges.