JPH03199U

JPH03199U -

Info

Publication number: JPH03199U
Application number: JP5942689U
Authority: JP
Priority date: 1989-05-23
Filing date: 1989-05-23
Publication date: 1991-01-07

Description

[Brief explanation of drawings]

第１図〜第３図はこの考案の第１の実施例を示
すもので、第１図はユニオン継手の縦断側面図、
第２図はユニオン継手の側面図、第３図はユニオ
ン継手の設置状態の側面図、第４図はこの考案の
第２の実施例を示すユニオン継手の縦断側面図、
第５図は従来の逆流防止継手の側面図である。２０……ユニオン継手、２１……ユニオンパイ
プ、２２……ユニオンナツト、２７……逆止弁、
２９……流通口、３０……弁座、３３……弁体、
３５……付勢ばね。 Figures 1 to 3 show the first embodiment of this invention, and Figure 1 is a longitudinal cross-sectional side view of a union joint;
Fig. 2 is a side view of the union joint, Fig. 3 is a side view of the union joint in its installed state, and Fig. 4 is a vertical sectional side view of the union joint showing the second embodiment of this invention.
FIG. 5 is a side view of a conventional backflow prevention joint. 20...Union joint, 21...Union pipe, 22...Union nut, 27...Check valve,
29...Flow port, 30...Valve seat, 33...Valve body,
35...Biasing spring.

Claims

[Scope of utility model registration request]

In a union joint consisting of a union pipe and a union nut fitted to the union pipe, the union pipe includes a check valve body having a fluid communication port and a valve seat that seats the communication port. , a check valve consisting of a valve body that is provided inside the check valve body so as to be able to move toward and away from the valve seat to prevent backflow of fluid, and a biasing spring that biases the valve body in the valve-closing direction. A union joint characterized by a removably built-in valve.