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A compound seal is provided for a valve having a housing, the housing having cold and hot water inlets and at least one outlet. The housing contains a replaceable cartridge having a valve actuation portion having cold and hot water inlets and outlets to allow fluid to interruptibly flow through the

A compound seal is provided for a valve having a housing, the housing having cold and hot water inlets and at least one outlet. The housing contains a replaceable cartridge having a valve actuation portion having cold and hot water inlets and outlets to allow fluid to interruptibly flow through the valve. The flow is interrupted when the valve actuation portion is moved from a valve open position to a valve closed position. The seal includes a body having first sealing elements to interrupt the flow through the inlet of the valve when the valve actuation portion is moved from a valve open position to a valve closed position. The body of the seal also has second sealing elements to interrupt the flow out of the valve through the outlet thereof when the valve actuation portion is moved from a valve open position to a valve closed position should the first sealing element fail.

대표청구항 ▼

A valve cartridge for a valve housing, the housing having an opening therein for receiving the cartridge in use and an inner wall surrounding the opening, the inner wall of the housing having fluid ports defined therewith to provide a fluid path to and from the valve cartridge in use, the valve cart

A valve cartridge for a valve housing, the housing having an opening therein for receiving the cartridge in use and an inner wall surrounding the opening, the inner wall of the housing having fluid ports defined therewith to provide a fluid path to and from the valve cartridge in use, the valve cartridge comprising an outer substantially hollow stationary sleeve having an inner and outer surface, and an inner substantially hollow moveable sleeve disposed within the stationary sleeve also having an inner and outer surface and having inlets and outlets, the stationary sleeve having a first inlet, a first outlet and means to carry an outlet sealing portion; a seal is disposed proximate the first inlet, the first outlet and the means to carry an outlet sealing portion, and including proximate the inlet, outlet and the means to carry an outlet sealing portion of the stationary sleeve first annular raised portions raised laterally toward the moveable sleeve through the stationary sleeve and abutting the outer surface of the moveable sleeve in use, the seal having second annular raised portions opposite the first portions raised laterally away from the stationary sleeve in use and abutting the housing, the portion of the seal proximate the first inlet and outlet having an aperture therethrough in alignment with the first inlet and outlet of the stationary sleeve, the portion of the seal proximate the means to carry an outlet sealing portion having an occluded face therewith presenting a sealing surface for selective alignment with an outlet of the moveable sleeve in use, whereby when the moveable sleeve is moved between the valve closed position, whereat the portion of the seal proximate the inlet of the stationary sleeve abuts the outer wall of the moveable sleeve thus preventing fluid from entering the cartridge and whereat the portion of the seal proximate the means to carry an outlet sealing portion of the stationary sleeve abuts the outlet of the moveable sleeve proximate the outer wall by the raised portion and occluded face of said portion thus preventing fluid from exiting the cartridge should the seal proximate the inlet of the stationary sleeve fail, to selective valve opened positions whereat the aperture of the portion of the seal proximate the inlet and outlet of the stationary sleeve overlaps all or part of the inlet and outlet of the moveable sleeve, the raised portions abutting the outer wall of the moveable sleeve proximate the inlet and outlet of the moveable sleeve thus allowing fluid to enter and exit the cartridge and whereat the portion of the seal proximate the means to carry an outlet sealing portion of the stationary sleeve has moved partially or totally away from the outlet of the moveable sleeve with the raised portion and occluded face of said portion allowing fluid to exit the cartridge, the laterally raised portions of the seal abutting the housing assisting in the the retention of the seal with the stationary sleeve.