The Spring Water - 2 has a 60 lbs. blend of high grade coconut shell carbon and coal based carbon in a 12" X 52" tank. With twice as much carbon as the Spring Water 1 system, contact time is increase allowing for a higher percentage removal of organic compounds such as taste, odor, color, chemicals, chlorine, chlorination byproducts (THM's) and low levels of iron and hydrogen sulfide.
7000 Valve has 1 1/4" inlet and outlet connections and the highest flow rates.
ProFlo valve and 7000 valve both have the advanced SE microprocessor controller.
ProFlo has idential flow rates to the old style 2510 valve with the addition of a microprocessor controller.