Commercial RO System with Reliable Features CRO1000 is a true commercialgrade high output 1000 GPD reverse osmosis water filtration system Features a tankless design with increased production of ondemand clean filtered water Working water pressure ranges from 80 to 130 psi and 07 GPM output speed Builtin water inlet and outlet gauges for easy pressure monitoring Optional PMP1000 booster pump is recommended for water pressure 80 psi and below