A water filter having a strainer mounted on the inside for straining
water, and a reciprocating device controlled by a pressure differential
controller to reciprocate a disk-like scraper in the strainer, causing
it to scrape out dirt from the strainer, the disk-like scraper having
a center water hole and a check valve mounted in the center water
hole for permitting water to flow downwards in the strainer through
the center water hole and stopping water from flowing upwards in
the strainer through the center water hole.
The present invention concerns a water filter designed to be inserted
into a drinking water circuit. The water filter has a support designed
to house removably one or more different filters each having a different
filtering property and adapted to be mounted either independently
of each other or associated in a particular combination so as to
effect a filtration of the drinking water according to its composition.
A water filter including a filter unit utilizing bag filters and
including a hydraulic jack for displacing the bag filters between
a lower operative position and an elevated position where the bags
are readily accessible the jack preferably in the form of a pair
of relatively extensible tubular telescopic members in a flow path
between a pump delivery connection and the inlet to the filter bags
with one of the members providing a flow communication from the
member to the filter outlet. The filter also includes inlet means
to the filter bag directing flow to wash the interior surface of
A water filter cartridge for use with a water faucet includes a
cover and a filter element located within the cover. The cover has
a single unfiltered water input connection and a pair of water output
connections, one for filtered water and one for unfiltered water.
There is a conduit within the cover connecting the unfiltered water
input connection and the unfiltered water output connection. There
is a flow path within the cover from said unfiltered water input
connection, through said filter element, and connecting to said
filtered water output connection.