Locking valve for pipes has housing which fits over elastic sleeve and valve stem mounted within housing, sleeve having portions which cooperate with seatings on housing and which also form mounting for valve stem

摘要

The locking valve has a housing (12) which fits over an elastic sleeve (34). A valve stem (22, 27) is mounted within the housing. The sleeve has portions (26, 28) which cooperate with seatings (30, 32) on the housing and which also form a mounting for the valve stem.