초록 ▼

A cartridge based water purification and filtration system which permits cartridge changes without drainage at the input and output ports. Interlocking flanges at the manifold and cartridge lock the cartridge to the manifold and raised surfaces at the cartridge operate the inlet valve with a rotatio

A cartridge based water purification and filtration system which permits cartridge changes without drainage at the input and output ports. Interlocking flanges at the manifold and cartridge lock the cartridge to the manifold and raised surfaces at the cartridge operate the inlet valve with a rotational seating of the cartridge. A spring biased inlet valve depends from a supply manifold input port and cooperates with the filter cartridge to prevent forward flow until the cartridge is seated to the manifold. The check valve includes a split stem which prevents chatter with valve operation. A check valve at the output port cooperates with a sealed bayonet fitting that mates to a concentric outlet port at the cartridge to prevent back flow with cartridge removal.

대표청구항 ▼

[What is claimed is:] [14.]inlet/outlet means being a two stage recess, the recess having a first cylindrical stage having a first stage diameter and having a first end and an opposed second end, an opening being defined at a first end thereof, the recess further having a second substantially cylind

[What is claimed is:] [14.]inlet/outlet means being a two stage recess, the recess having a first cylindrical stage having a first stage diameter and having a first end and an opposed second end, an opening being defined at a first end thereof, the recess further having a second substantially cylindrical stage being concentric with the first cylindrical stage and having a second stage diameter and having a first end and an opposed second end, the second stage diameter being less than the first stage diameter and having a first end operably coupled to the second end of the first cylindrical stage by a connecting wall and having an opening being defined at the second end thereof, the first cylindrical stage being in flow communication with the flow channel by at least one inlet port being defined between said first cylindrical stage and said flow channel and the second cylindrical stage being fluidly communicable with the treatment cartridge, at least two shoulder flanges being radially disposed with respect to the inlet/outlet means, the shoulder flanges having a tapered leading edge, the first cylindrical stage presenting a first mating surface for mating with the filter apparatus manifold and the second substantially cylindrical stage presenting a second mating surface for mating with the filter apparatus manifold, the first and second mating surfaces being substantially continuous and free of interruption by fluid seals.