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. The insert is non-removably secured to the body.

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;    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, edge of the insert defining a radial flange adapted to rest on an upper body inlet surface, the body and the insert being made of different materials; and    an inlet nut, the inlet nut being attachable to an external thread defined by the body inlet, the inlet nut, when attached to the body inlet, securing the inlet flange against the upper body inlet surface.    
   
   
       2 . (canceled)  
   
   
       3 . A waste trap according to  claim 1 , wherein the body is a unitary body.  
   
   
       4 . A waste trap according to  claim 1 , wherein the body is formed of metal.  
   
   
       5 . A waste trap according to  claim 1 , wherein the body is produced by casting.  
   
   
       6 . A waste trap according to  claim 1 , wherein the insert is tubular.  
   
   
       7 . A waste trap according to  claim 1 , wherein the insert is cylindrical.  
   
   
       8 . A waste trap according to  claim 1 , wherein the insert is of plastics material.  
   
   
       9 . A waste trap according to  claim 1 , wherein the insert is of a design which may be utilized in a variety of body forms or designs.  
   
   
       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 and body are manufactured separately, and the insert is subsequently inserted into the body.  
   
   
       12 . A waste trap according to  claim 1 , wherein the height of the inlet in the body is above the height of the outlet.  
   
   
       13 . 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.  
   
   
       14 . A waste trap according to  claim 1 , wherein the body further comprises fittings for attaching the trap to other plumbing components.  
   
   
       15 . A waste trap according to  claim 1 , further comprising a second insert lining an internal surface of the outlet, providing a smooth internal bore of the outlet.  
   
   
       16 . (canceled)  
   
   
       17 . (canceled)  
   
   
       18 . (canceled)  
   
   
       19 . (canceled)  
   
   
       20 . (canceled)  
   
   
       21 . (canceled)  
   
   
       22 . (canceled)  
   
   
       23 . (canceled)  
   
   
       24 . (canceled)  
   
   
       25 . A waste trap according to  claim 1 , wherein the inlet flange is, in use, sandwiched between the inlet nut and the upper inlet surface.  
   
   
       26 . A waste trap according to  claim 12 , wherein the difference between the height of the body inlet and the body outlet is minimised to maximise the height, in use, of the liquid seal.  
   
   
       27 . A waste trap according to  claim 1 , wherein the insert is adapted to receive a an outlet pipe from a plumbing fixture.  
   
   
       28 . A waste trap according to  claim 1 , wherein the insert divides the body interior volume substantially inhalf.