Installation Guide
   OWNERS MANUAL 
16
Threshold Drain Installation 
Threshold Drain Information 
All gel coat walk-in bathtubs are provided with a threshold door drain. All acrylic walk-in 
bathtubs feature the “Patented T5 Door System” which does not require the threshold drain. 
Connection of the Door Drain  
  Door Drain requires the connection to a minimum 1 ½” sanitary drain line. 
  Use UPC Approved PVC Glue, Primer, and Schedule 40 1 ½” pipe. 
  The door drain, check valve, and 3/8” vinyl tubing are installed on the walk-in bathtub 
  The door drain coupling has an integral 3/8” barb for connection of the door drain line. 
  The drain coupling must be located between the drain tee and shoe along the tub’s drain line. 
  The 3/8” barb on the drain coupling must be positioned parallel to the sub floor. 
  Connect the door drain assembly and drain coupling with 3/8” vinyl tubing. 
  Verify the coupling barb, check valve, and 3/8” tubing are horizontal to the floor. 
  Glue all components and tubing in place use PVC Glue. 










