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US 2014/0231349 A1Published application
Isolation valve
AssigneeEvoqua Water Technologies LLC
InventorsMichael Collignon, Wah Khit Ng
Life of this patent
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Abstract
Systems and methods for isolating a filtration module are provided. The systems and methods may utilize a removable end cap comprising an isolation valve. In certain systems and methods, the isolation valve may be configured to selectively allow fluid communication between a port and a filtrate passageway of one filtration module in a plurality of filtration modules.
Claims20
A membrane filtration system comprising:
- a first filtration module including a plurality of hollow fiber membranes, the plurality of hollow fiber membranes potted in and extending between an upper header and a lower header;
- a first filtrate passageway defined in the upper header and in fluid communication with the plurality of hollow fiber membranes;
- and
- a removable end cap comprising:
- a port;
- and
- a shut-off valve including a seal configured to selectively allow fluid communication between the port and the first filtrate passageway.
4 more elements
A membrane filtration system comprising:
- at least one filtration module comprising a plurality of hollow fiber membranes, the plurality of hollow fiber membranes potted in and extending between upper and lower headers;
- the upper header including a first sealing surface and a filtrate passageway;
- and
- a removable end cap comprising a second sealing surface configured to selectively engage with the first sealing surface to selectively allow fluid communication between the plurality of hollow fiber membranes and the filtrate passageway.
1 more element
A method for replacing a filtration cartridge in a membrane filtration system, the method comprising:
- accessing a membrane filtration system comprising a plurality of filtration modules, wherein each filtration module comprises a filtration cartridge, an upper header defining a filtrate passageway, and a removable end cap in fluid communication with the upper header, the removable end cap including a port in fluid communication with the filtrate passageway and a shut-off valve configured to selectively allow fluid communication between the port and the filtrate passageway;
- evaluating at least one property of at least one filtration module to obtain a result;
- and
- responsive to the result of the evaluation, accessing the at least one filtration module;
- and
- engaging at least one shut-off valve in at least one filtration module to interrupt fluid communication between the port and the filtrate passageway of the at least one filtration module while maintaining fluid communication between filtrate passageways in the upper headers of the plurality of filtration modules.
3 more elements
Dependencies are inferred from the claim text.