| 摘要 |
<p>An improved filter head (10) including a base (16) having a filter receptable (18) and a housing receptacle (20), an outer surface (15) extending from the base, first and second bores (22, 24) extending inwardly from the outer surface, a first port (26) connecting the first bore to the housing receptacle, and a second port (28) connecting the second bore to the filter receptacle. The improvement includes a plug (34) within the second bore (24), preventing fluid communication between the second port (28) and the outer surface (15), an unfiltered-fluid opening (30) connecting the second bore (24), between the plug and the outer surface, and the housing receptacle, and a filtered-fluid opening (32) extending between the outer surface and the second bore, between the second port and the plug. Another filter head includes a base having a filter receptacle and a housing receptacle, and outer surface exttending from the base, an inlet extending between the outer surface and the housing receptacle, an unfiltered-fluid outlet extending between the outer surface and the housing receptacle, and a filtered-fluid outlet extending between the outer surface and the filter receptacle.</p> |
