1. The softener shall deliver not less than four gallons per minute [15.14 liters per minute] of soft water.

2. Pressure drop from inlet to outlet of the softener, including valving and exchanger (at manufacturer's specified softening flow rate) shall not exceed fifteen pounds per square inch [6.80 kilograms per 6.45 square centimeters].

General Authority: NDCC 43-18.1-03

Law Implemented: NDCC 43-18.1-04