| 摘要 |
A drain assembly for a fluid filter (12) includes a female valve portion (26) unitary with an end wall (22) of a collection bowl (14), and having a socket (30) with a cylindrical sidewall and an inner end wall. The end wall (22) includes a plug (38), and a vent opening (40) radially outward from the plug (38). A drain opening (44) is provided in the end wall (22) radially outward from the socket (30). An annular sealing surface (48) is provided radially outward from the drain opening (44). A threaded sleeve (50) is provided radially outward from the annular sealing surface (48). A male valve portion (28) is received in the female valve portion (26), and includes a valve body (60) and a valve seal (62). The valve seal (62) is received in the socket (30) and includes a cylindrical sidewall (66) defining a vent passage (67), and an inner end (68) with a vent opening (72) to the vent passage (67). An annular sealing surface (78) is provided radially outward from the sidewall (66) of the valve seal (62). The sealing surface (78) on the valve body (60) is sealable against the sealing surface (48) on the bowl end wall (22), and has an outer diameter sufficient to cover the drain opening (44). The valve body (60) has a drain passage (79) radially outward from the valve seal (62). The valve body (60) includes a threaded sleeve (85) radially outward from the annular drain passage (79) in the valve body. The threaded sleeve (85) of the valve body (60) cooperates with the threaded sleeve (50) of the female valve portion (26) to enable the male valve portion (28) to be screwed into and outwardly from the female valve portion (26). |
