What is the proper water pressure to make the AllPure RO Filter work?
A. The AllPure Filter System is designed to work with municipal water which in the U.S. averages 65 psig. Pressures of 60 to 75 psig are the normal variation in city pressure. A pressure of 40-psig or below is insufficient, but may be increased by a small booster pump. The AllPure model AP-4/P is designed to work with low pressure water, such as from home well systems.