Gully arrangement
A gully arrangement comprises a housing ( 1 ) having an inlet ( 17 ) at an upper end thereof, a reservoir ( 3 ) in a lower region thereof, and a conduit system ( 5, 7 ) forming a trap at a side of the housing. A valve ( 19 ) is provided in an upper region of the housing and adapted to close the inlet in the event liquid in the housing rises substantially to the level of the valve. The conduit system comprises an upper conduit ( 5 ) communicating with the housing at a level below the inlet, the upper conduit being closed at the housing by a removable stopper ( 20 ), and a lower conduit ( 7 ) exiting the housing at a lower level than the upper conduit and extending in an upwardly inclined direction to communicate with the upper conduit.
1. A gully arrangement comprising: a housing having an inlet at an upper end thereof, a reservoir in a lower region thereof, and a conduit system forming a trap at a side of the housing; and a valve provided in an upper region of the housing and adapted to close the inlet in an event that liquid in the reservoir of the housing rises substantially to a level of the valve, wherein the conduit system comprises an upper outlet conduit communicating directly with the reservoir in the housing at a second level, below the inlet and providing both an upper exit directly from the reservoir and also an outlet from the housing, the upper exit from the reservoir being closed by a removable stopper, and a lower outlet conduit communicating directly with the reservoir in the housing and providing a lower exit directly from the reservoir of the housing at a lower level than the upper exit from the reservoir, and extending in an upwardly inclined direction to communicate with the upper outlet conduit intermediate the upper exit from the reservoir of the housing and the outlet of the upper outlet conduit from the housing, the removable stopper and the upwardly inclined lower outlet conduit forming the trap of the conduit system, between the reservoir and the outlet of the upper outlet conduit from the housing, for preventing an escape of odors into the housing reservoir from a drainage system in which the gully arrangement is installed.
2. A gully arrangement as claimed in claim 1 , wherein the conduit system is provided in a lateral protrusion of the housing.
3. A gully arrangement as claimed in claim 1 , wherein the upper outlet conduit extends in a downwardly inclined direction from the housing reservoir.
4. A gully arrangement as claimed in claim 1 , where the housing is provided with a continuous inwardly-extending lip for sealing the valve.
5. A gully arrangement as claimed in claim 4 , wherein the valve is adapted to seal with a lower surface of the lip.
6. A gully arrangement as claimed in claim 4 , wherein a peripheral region of the valve sealingly engages the lip in a sealing relationship.
7. A gully arrangement as claimed in claim 1 , wherein the valve comprises a flap valve pivotably mounted along one edge thereof.
8. A gully as claimed in claim 1 , wherein the specific gravity of the valve is less than 1.
9. A gully arrangement as claimed in claim 8 , wherein the valve is made of a material having a specific gravity less than 1.
10. A gully arrangement as claimed in claim 8 , wherein the valve is provided with a float.
11. A gully arrangement as claimed in claim 10 , wherein the valve is provided with the float along a free edge thereof.
12. A gully arrangement as claimed in claim 1 , wherein the valve is provided with reinforcing ribs.
13. A gully arrangement as claimed in claim 12 , wherein the reinforcing ribs extend in two transverse directions.
14. A gully arrangement as claimed in claim 1 , wherein, in an open configuration of the inlet, the valve is received in a recess provided in a wall of the housing.