Check valve for cold climates

摘要

(57) Abstract Constitution In lower part of valve casing 1 providing drain port 9The te it is. In cylinder shaft center direction of valve casing 1 extending the push which is presentyurotsudo 10 the Interpolation has passed to the said drain port 9. This putsuFlange 11 is provided on the middle of shiyurotsudo 10.O ring 12 is installed in the peripheral face of flange 11.This O ring 12 water tight in the inner skin of drain port 9 andSleeve it is touching unrestrictedly. In inside valve casing 1, the valveIn lower part of sheet section 5 strainer stopper section 13 providing and othersThe re te it is. On upper part surface of this strainer stopper section 13 connectionWay it does, in push rod 10 strainer 14 takingThe ri it is attached. Advantages The strainer is provided in spite, the remainderFreezing the residual water is prevented.