Plumbing - Drain Primer Sink Takeoff

It works best to use the 1-1/2" version. On the end of the 1-1/4" sink drain pipe (that typically has the plug popup mechanism) you fit a 1-1/2" take-off assembly. This connects to the sink drain pipe using an ABS male screw piece and an ABS 1-1/4 slip ring piece.

Drain Primer Sink Takeoff

About $14.49.

http://www.homedepot.com/p/Keeney-Manufacturing-Company-1-1-2-in-x-8-in-Brass-Chrome-Plated-Direct-Connect-Trap-Primer-57SN/204374008?cm_mmc=shopping-_-shopzilla-_-D26-_-204374008&srccode=cii_10043468&cpncode=34-245783191-2

There is also a 1-1/4" version but using it requires an upside-down slip ring joint which is likely to be unreliable.

Sink drain primer takeoff 1-1/4

1-1/4" version that has a fine screw thread top is http://www.homedepot.com/p/Keeney-Manufacturing-Company-1-1-4-in-x-8-in-Brass-Chrome-Plated-Threaded-Trap-Primer-56SN/204373995?quantity=1

Manufacturer info...

http://www.keeneymfg.com/featured_products/46-56SN-57SN-Sink-Tailpieces-ASSE-1044