Freeze-proof hydrant

Details Freeze-proof hydrant Freeze-proof hydrant

E - Fixed Constructions

03

B

137/22

E03B 7/12 (2006.01) E03B 9/14 (2006.01)

Patent

CA 2020032

Abstract Of The Disclosure Freeze-proof hydrants comprising: (a) a housing having first and second ends, the first end having fitting means adapted for flow communication with a source of liquid under pressure; (b) passageway in housing (a) for flow of the liquid from the first end to the second end of housing (a); (c) back flow preventer means located in passageway (b); (d) drain means in housing (a); (e) a removable cartridge located in passageway (b) between back flow preventer means (c) and the first end of housing (a), comprising: (i) a casing having a first end having an opening and a second end having an opening; (ii) a passageway in casing (i); (iii) drain means in casing (a) comprising a drain channel and at least one hole in the drain channel which extends through casing (a); (iv) means for retaining removable cartridge in passageway (b); (v) plunger means in passageway (ii) which can be moved from an open or liquid flowing position to a closed or liquid draining position, and vice versa, the plunger means having a plunger head which blocks passageway (i) in the closed position and which allows liquid flow in passageway (i) in the open position; the plunger means having a body to which the plunger head is connected, the plunger body having at least one passageway therethrough for liquid flow, the plunger means blocking drain means (d) and drain means (iii) when in the open position, and there being communication between drain means (iii) and drain means (d) when the plunger means is in the closed position, and (f) valve operating means, located in housing (a) so as not to block the liquid flow in passageway (b), whereby plunger means can be moved between the open position and the closed position.

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