The rinse pump is ONLY for pressurizing the inductor. Stacks are NOT to be pressurized due to overspeeding gear meters.
Pump specifications: 25 gallons/min at 25 PSI. Maximum 100 PSI. We recommend a self-priming pump.
Electric: Typically a 2 HP pump will be sufficient
Gas: Typically a 2 inch pump is used and idled back. Typically a 2 inch pump is the cheapest because of availability.