B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 27/10 (2006.01) B01D 27/08 (2006.01) F16K 17/04 (2006.01)
Patent
CA 2573550
A filter includes a filter housing having a tapping plate providing an inlet. A filter element assembly is arranged in the housing and includes an end disc. A bypass valve housing is arranged between the end disc and the tapping plate and supports a bypass valve. The bypass valve housing provides a cavity in fluid communication with the bypass valve. An anti-drain back valve is retained between the bypass valve housing and end disc. The inlet is in fluid communication with the cavity when the anti-drain back valve is in a closed position. The anti--drain back valve is over-molded to the bypass valve housing. The bypass valve housing including first and second portions secured to one another, for example, by ultrasonic welding. The first portion provides a spring seat, and the second portion includes first, second and third walls generally concentric with one another. The first and second walls provide a cavity, and the second wall is arranged between the first and third walls. The second wall includes apertures in communication with the cavity. A bypass valve is arranged between the first and second portions and in communication with the cavity. An anti-drain back valve is supported by a flange extending from the third wall.
Purolator Filters Na Llc
Smart & Biggar
LandOfFree
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