80 PVC is used make sure to follow the proper primer and solvent
instructions.)
3. The drain line connection is 5/8 OD or ¾” npt and is located on the top
left of the valve as you face the timer. It is recommended you install a
¾” union on the drain line for servicing. The drain line must be of
adequate size to allow for full regeneration flow.
• The control valve drain connection is 3/4" npt.
• Never decrease the drain piping size to below drain
connection size.
• Maximum drain line length is 30 feet.
• Maximum drain line height is 6 feet above the control
valve.
• The drain line must be piped to an open air gap (See
Figure above)
• Always follow local plumbing codes.
UNDER NO CIRCUMSTANCES SHOULD THERE BE A DIRECT
CONNECTION WITH SANITARY SEWAGE FACILITIES.