How to Plumb a 3 Compartment Sink. Turn off your supply valves underneath the sink. Separate all the pieces that come in your triple-sink kit. Dry-fit all the horizontal sections of your PVC kit underneath the sink. Cut the PVC pieces to fit with your hacksaw. Install your PVC p-trap kit onto the bottom of the center- . Tell-Tale Drains and Three-Compartment Sinks. Telephone: (651) 284-5063. (MN Rules, Chapter 4714, Section 704.3) www.dli.mn.gov/ccld/planplumbing.asp. Oct 10, 2012 - Hi Guys, My worker tore it all up, and left, so I am going to finish replacing it myself need to know how to replace a PVC drain trap for a . The best washbasin to install in these types of facilities is a stainless steel 3 compartment sink as it provides the necessary requirements for washing hands, . I'd like to install a 3 bay stainless steel sink in my basement. The sink currently has the drain assemblies that screw into each bay's drain hole, . May 20, 2006 - I'm installing a three compartment kitchen sink in a friends new sushi joint. My question is, do the the three 1 1/2 tail pieces have to join into a 2' . I have a s/s 3 compartment sink approx. 8' long to be installed in a church kitchen. The sinks are on 18' centers. Need some advice in proper installing and .