JPS61187435U

JPS61187435U -

Info

Publication number: JPS61187435U
Application number: JP7058785U
Authority: JP
Priority date: 1985-05-15
Filing date: 1985-05-15
Publication date: 1986-11-21

Description

[Brief explanation of the drawing]

第１図、本考案の一実施例に係る圧力計の縦断
面図、第２図は第１図の圧力計の外観図、第３図
は従来の圧力計の使用状態の概略正面図である。［符号の説明］、Ｂ……配管、１……中央管、
２……流路、３，４……フランジ、５……締付け
ネジ、６……シリンダ、７……密閉室、８……ピ
ストン、９……第１部屋、１０……第２部屋、１
１……ピストンパツキン、１２……通路手段、１
３……呼吸路手段、１４……付勢手段、１５……
圧力表示目盛、１６……Ｏ―リングパツキン、１
７……継手。 Fig. 1 is a longitudinal sectional view of a pressure gauge according to an embodiment of the present invention, Fig. 2 is an external view of the pressure gauge of Fig. 1, and Fig. 3 is a schematic front view of a conventional pressure gauge in use. . [Explanation of symbols], B...Piping, 1...Central pipe,
2... Channel, 3, 4... Flange, 5... Tightening screw, 6... Cylinder, 7... Sealed chamber, 8... Piston, 9... First chamber, 10... Second chamber, 1
1... Piston packing, 12... Passage means, 1
3... Breathing path means, 14... Urging means, 15...
Pressure display scale, 16...O-ring seal, 1
7...Joint.

Claims

[Scope of utility model registration request]

A central pipe interposed in the middle of the pipe and having a flow path communicating with the flow path of the pipe, a pair of flanges provided around each end of the central pipe, and the central pipe between these flanges. a cylinder that surrounds the central tube and has both ends abutted against each of the flanges, forming a sealed chamber around the tube; a ring-shaped piston that divides the sealed chamber into first and second chambers; passage means that communicates the first chamber and the flow path of the central pipe with each other; and breathing path means that communicates the second chamber with outside air. , comprising a biasing means for always biasing the piston toward the first chamber, and a pressure display scale attached around the cylinder and substantially indicated by the movement position of the piston; A pressure gauge characterized in that at least a portion provided with the pressure display scale is transparent.