Abstract: A filter housing is adapted to be assembled with a cap and installed with an O-ring. The filter housing includes a surrounding wall that is formed with a retaining groove for installation of the O-ring therein, and that has a plurality of protrusions. The retaining groove is defined among inner and outer surrounding surfaces and a groove end surface. The protrusions protrude from one of the inner and outer surrounding surfaces toward the other. The one of the inner and outer surrounding surfaces is adapted to be separated from the O-ring when the surrounding wall is separated from the cap, and is adapted to contact the O-ring when the surrounding wall is assembled with the cap and when the O-ring is squeezed by the cap to deform.

Abstract: A filter housing is adapted to be assembled with a cap and installed with an O-ring. The filter housing includes a surrounding wall that is formed with a retaining groove for installation of the O-ring therein, and that has a plurality of protrusions. The retaining groove is defined among inner and outer surrounding surfaces and a groove end surface. The protrusions protrude from one of the inner and outer surrounding surfaces toward the other. The one of the inner and outer surrounding surfaces is adapted to be separated from the O-ring when the surrounding wall is separated from the cap, and is adapted to contact the O-ring when the surrounding wall is assembled with the cap and when the O-ring is squeezed by the cap to deform.

Abstract: A filter housing assembly is adapted for accommodating a filter element, and includes a housing member and a support structure. The housing member has a cylindrical body, a cap closure, and influent and effluent channels. The support structure includes a first support member that is provided on one of the cylindrical body and the cap closure, and a second support member that is provided on the other one of the cylindrical body and the cap closure. The first and second support members are adapted to be respectively connected to two open ends of the filter element such that one of the open ends is sealed and the other one of the open ends is connected directly to an outlet port of the effluent channel.

Abstract: A pressure vessel includes an inner liner, a tubing connector, and an anti-leakage unit. The inner liner is disposed in an outer shell and defines an inner space. The tubing connector is disposed outwardly of the inner space and is welded to the outer shell. The anti-leakage unit has inner and outer sealing rings, and a clamping member that extends into the tubing connector and the inner space and that has inner and outer end flanges. The inner and outer end flanges are disposed inside and outside the inner space, respectively. The inner and outer end flanges cooperatively provides a clamping force to press the inner and outer sealing rings against the inner liner and the tubing connector, respectively.

Abstract: A pressure vessel includes an inner liner, a tubing connector, and an anti-leakage unit. The inner liner is disposed in an outer shell and defines an inner space. The tubing connector is disposed outwardly of the inner space and is welded to the outer shell. The anti-leakage unit has inner and outer sealing rings, and a clamping member that extends into the tubing connector and the inner space and that has inner and outer end flanges. The inner and outer end flanges are disposed inside and outside the inner space, respectively. The inner and outer end flanges cooperatively provides a clamping force to press the inner and outer sealing rings against the inner liner and the tubing connector, respectively.