JPS6378768U

JPS6378768U -

Info

Publication number: JPS6378768U
Application number: JP17252086U
Authority: JP
Priority date: 1986-11-12
Filing date: 1986-11-12
Publication date: 1988-05-25

Description

[Brief explanation of the drawing]

第１図ないし第４図はこの考案の第一の実施例
を示し、第１図は下流側から見た図、第２図は第
１図の―線に沿う断面図、第３図は側方外部
から見た図、第４図は押え板の斜視図、第５図は
この考案の別の実施例を側方外部から示す図、第
６図はこの考案に係る逆止弁をタンクローリ車の
タンクからの液体の排出通路に設けた例を示す回
路図である。１４……弁座、２６……下側弁体、３２……ね
じりばね（付勢手段）、５６，７０……操作レバ
ー（操作部材）、６６……弁体、６８……圧縮コ
イルばね（付勢手段）。 Figures 1 to 4 show the first embodiment of this invention, with Figure 1 being a view from the downstream side, Figure 2 being a sectional view taken along line - in Figure 1, and Figure 3 being a side view. FIG. 4 is a perspective view of the holding plate, FIG. 5 is a view showing another embodiment of this invention from the outside, and FIG. FIG. 2 is a circuit diagram showing an example of a liquid discharge passage provided from a tank. 14... Valve seat, 26... Lower valve body, 32... Torsion spring (biasing means), 56, 70... Operating lever (operating member), 66... Valve body, 68... Compression coil spring ( biasing means).

Claims

[Claims for Utility Model Registration] (1) A valve seat disposed in a fluid passage, a valve element that can sit on the valve seat, and a biasing means for pressing the valve element against the valve seat. and an operating member that is manually operated to separate the valve body from the valve seat in the check valve that prevents flow in the same direction as the direction of the biasing force of the biasing means toward the valve body. A check valve characterized in that a check valve is provided outside the fluid passage. (2) The check valve according to claim 1, which is a registered utility model, characterized in that a locking means is provided for locking the operating member and holding the valve body in an open state. (3) The check valve according to claim 1 or 2, wherein the check valve is provided in a liquid discharge passage from a tank of a tank lorry vehicle.