Invention Grant
US08845897B2 Drain valve for filter service and method 有权
过滤器排水阀和方法

Drain valve for filter service and method
Abstract:
A fluid filter is described, where a drain valve is configured to move back and forth into open and closed positions. The drain valve and a filter cartridge are in a structural arrangement such that the drain valve is put in an open position before the filter and/or a filter element therein can be serviced or replaced.
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