Waste trap

Abstract

A waste trap 10 for use in plumbing installations is provided, the trap comprising a unitary metal body 12 defining an interior volume, and having a tubular plastics insert 20 located in an inlet 14 of the body 12 and extending into the volume to below the height of a waste outlet 16 . The insert 20 partitions the upper portion of the volume into two regions, and serves to provide a water seal between the inlet 14 and the outlet 16 when the trap is in use.

I claim:  
     
         1 . A waste trap comprising a body defining an interior volume, and having an inlet and an outlet each located at a height on the body; and an insert located in the inlet and extending into and partitioning the volume to below the height of the outlet, to allow provision of a liquid seal between the inlet and outlet.  
     
     
         2 . A waste trap according to  claim 1 , wherein the body is a unitary body.  
     
     
         3 . A waste trap according to  claim 1 , wherein the body is formed of metal.  
     
     
         4 . A waste trap according to  claim 1 , wherein the body is produced by casting.  
     
     
         5 . A waste trap according to  claim 1 , wherein the insert is tubular.  
     
     
         6 . A waste trap according to  claim 1 , wherein the insert is cylindrical.  
     
     
         7 . A waste trap according to  claim 1 , wherein the insert is of plastics material.  
     
     
         8 . A waste trap according to  claim 1 , wherein the insert is of a design which may be utilised in a variety of body forms or designs.  
     
     
         9 . A waste trap according to  claim 1 , wherein the insert is secured to the body.  
     
     
         10 . A waste trap according to  claim 1 , wherein the insert is secured to the inlet of the body.  
     
     
         11 . A waste trap according to  claim 1 , wherein the insert is releasably secured to the body.  
     
     
         12 . A waste trap according to  claim 1 , wherein the insert and body are manufactured separately, and the insert is subsequently inserted into the body.  
     
     
         13 . A waste trap according to  claim 1 , wherein the height of the inlet in the body is above the height of the outlet.  
     
     
         14 . A waste trap according to  claim 1 , wherein the body defines a top and a side, and the inlet is located in the top of the body and the outlet is located in the side of the body.  
     
     
         15 . A waste trap according to  claim 1 , wherein the body further comprises fittings for attaching the trap to other plumbing components.  
     
     
         16 . A waste trap according to  claim 1 , further comprising a second insert lining an internal surface of the outlet.  
     
     
         17 . A method of manufacturing a waste trap, the method comprising the steps of: 
 providing a body defining an interior volume, and having an inlet and an outlet each located at a height on the body; and    locating an insert in the inlet extending into the volume to below the height of the outlet.    
     
     
         18 . A method according to  claim 17 , further comprising the step of securing the insert to the body.  
     
     
         19 . A method according to  claim 17 , wherein the step of providing the body comprises the step of producing a unitary body.  
     
     
         20 . A method according to  claim 17 , wherein the body is produced by casting metal.  
     
     
         21 . A waste trap comprising a body defining an interior volume, and having an inlet and an outlet each located at a height on the body; and an insert located in the inlet and extending into and partitioning the volume to below the height of the outlet, wherein the trap contains a volume of liquid to provide a liquid seal between the inlet and outlet.  
     
     
         22 . A waste trap comprising a unitary metal body defining an interior volume, and having an inlet and an outlet; and an insert located in the inlet and extending into and partitioning the volume to below the height of the outlet; wherein the insert is tamper-proof.