CA2160940A1 - Wall Water Hydrant Having Backflow and Back Siphonage Preventor - Google Patents
Wall Water Hydrant Having Backflow and Back Siphonage PreventorInfo
- Publication number
- CA2160940A1 CA2160940A1 CA 2160940 CA2160940A CA2160940A1 CA 2160940 A1 CA2160940 A1 CA 2160940A1 CA 2160940 CA2160940 CA 2160940 CA 2160940 A CA2160940 A CA 2160940A CA 2160940 A1 CA2160940 A1 CA 2160940A1
- Authority
- CA
- Canada
- Prior art keywords
- housing
- valve
- valve body
- preventor
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Check Valves (AREA)
- Lift Valve (AREA)
Abstract
A wall mounted water hydrant has an elongated hollow housing with water inlet and outlet ends, and a center axis;
an inlet valve in the housing adjacent to the inlet end, including a valve seat and a valve body; a water outlet port in the housing adjacent to its outlet end; a valve operating rod in the housing with an inner end secured to the valve body and extending along the center axis to the outlet end of said housing, terminating in an outer end; a handle attached to the rod outer end, which when rotated in one direction closes the valve body against the valve seat, and in the other opposite direction moves the valve body away from the seat, thus allowing pressurized water from the inlet to flow downstream through the housing and outlet port; and a backflow preventor secured to the valve downstream from its seat. The elastomeric backflow preventor has a bell shape comprising a cylindrical body smaller than the interior of the housing and thin flexible side walls extending from the body outwardly and downstream to end in a lip portion which normally engages the interior walls of the housing. The backflow preventor has an open inner end with an inwardly extending shoulder which frictionally fits into an annular groove of the valve body. The inner end of the preventor abuts an annular shoulder on the valve body and is held thereagainst by a locking band.
an inlet valve in the housing adjacent to the inlet end, including a valve seat and a valve body; a water outlet port in the housing adjacent to its outlet end; a valve operating rod in the housing with an inner end secured to the valve body and extending along the center axis to the outlet end of said housing, terminating in an outer end; a handle attached to the rod outer end, which when rotated in one direction closes the valve body against the valve seat, and in the other opposite direction moves the valve body away from the seat, thus allowing pressurized water from the inlet to flow downstream through the housing and outlet port; and a backflow preventor secured to the valve downstream from its seat. The elastomeric backflow preventor has a bell shape comprising a cylindrical body smaller than the interior of the housing and thin flexible side walls extending from the body outwardly and downstream to end in a lip portion which normally engages the interior walls of the housing. The backflow preventor has an open inner end with an inwardly extending shoulder which frictionally fits into an annular groove of the valve body. The inner end of the preventor abuts an annular shoulder on the valve body and is held thereagainst by a locking band.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/350,693 | 1994-12-06 | ||
| US08/350,693 US5590679A (en) | 1993-07-08 | 1994-12-06 | Wall water hydrant having backflow and back siphonage preventor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2160940A1 true CA2160940A1 (en) | 1996-06-07 |
| CA2160940C CA2160940C (en) | 2000-03-21 |
Family
ID=23377803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2160940 Expired - Lifetime CA2160940C (en) | 1994-12-06 | 1995-10-19 | Wall water hydrant having backflow and back siphonage preventor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2160940C (en) |
-
1995
- 1995-10-19 CA CA 2160940 patent/CA2160940C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2160940C (en) | 2000-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20151019 |