Claims
- 1. A self-controlling check valve arrangement for allowing a self-controlled one way flow in a conduit with minimal flow resistance, comprising:a one way valve which will block the conduit when the pressure is the same on both sides of the one way valve, wherein the valve is arranged with a tight fit in the conduit and is partially fixed along an inner surface of the conduit by means of at least one part having a longitudinal/circumferential extension in the conduit, in order to block a flow in a first direction in case of pressure from a medium in the first direction, the pressure forming a tight element by means of the one way valve and to allow an almost unrestricted flow, depending on the magnitude of the pressure, in case of pressure in an opposite direction from the medium, wherein the surface, against which the pressure of a medium acts on the inside of the conduit, has an inclination of 35°±5° relation to the conduit in order to improve the operation especially at small differences of pressure.
- 2. The arrangement according to claim 1, wherein the partial fixation of the one way valve is up to half of the circumference of the conduit, whereby the one way valve when flow is allowed, depending on the pressure of th flow, will be in contact with the inner surface of the conduit in larger or smaller extent.
- 3. The arrangement according to 1, wherein the one way valve is designed to when unaffected automatically return to the non deformed position, due to the inherent elasticity, in which position the one way valve totally blocks the conduit.
- 4. The arrangement according to claim 2, wherein the one way valve in the area of the partial fixations is fixed to the inside of the conduit alone the total length of the one way valve.
- 5. The arrangement according to claim 4, wherein the one way valve is adhered to the inside of the conduit by glue.
- 6. The arrangement according to claim 1, wherein the check valve is received in a sewer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
0000013-3 |
Jan 2000 |
SE |
|
Parent Case Info
This application is a continuation of PCT/SE00/02524 filed Dec. 14, 2000.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
P9300329 |
Aug 1991 |
HU |
7248151 |
Sep 1995 |
JP |
183 622 |
May 1963 |
SE |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/SE00/02524 |
Dec 2000 |
US |
Child |
10/184909 |
|
US |