CONNECTING VALVE FOR FOAM GUN Russian patent published in 2016 - IPC B05C21/00 

FIELD: building industry.

SUBSTANCE: in a connecting valve for foam gun a valve body comprises a valve stem, a spring and a base for fixing the spring. The valve stem is located in the upper part of the valve body. The base for fixing the spring is located in the lower part of the valve body. The spring is located between the valve stem and the base for fixing the spring. The middle part of the valve stem comprises the thrust annular part of the valve stem. Inside the upper part the valve body comprises an annular projection. The thrust annular part of the valve stem comprises the first sealing element in the place where the upper side of the thrust annular part comes into contact with the lower part of the annular projection. The end surface of the valve stem facing the part of the second half of the opening of the valve body is provided with a sleeve positioned vertically. Several through openings are formed in the side wall of the sleeve, distributed uniformly around its circumference. On the end surface of the base for fixing the spring which faces the valve stem, a guide rod is located vertically. The spring is mounted on the guide rod. Between the lower end surface of the valve body and the surface of the countersink of the connecting sleeve there is the second sealing element.

EFFECT: improved sealing, ensuring the uniform distribution of the force generated by the emitted gases of the foaming agent, and the possibility of replacement of the valve body.

6 cl, 3 dwg