The CDP-8800 Series pumps are also compatible with most hydraulic shut-off valves with the optional PSW shut off tank controller switch. Outstanding toughness and durability. Designed for 30,000+ operating hours. Adjustable pressure boost between 40-120 PSI. Outlet pressures up to 160 PSI. EMI/RFI electronic noise suppression. Extremely quiet operation, less than 45 DBA. Expels trapped air, eliminates air locks. Runs dry without damage. Pumphead can be mounted up or down. Self-priming, 60 inch lift. Improved venting system removes moisture. Low voltage (12-24VAC) for maximum safety. Corrosion resistant exterior. Technical Specifications: POWER: The CDP-8800 #8851-2J03-B424 Series pumps operate safely with low energy (24 watts), low voltage (12-24VAC) motors. They can be used with compatible transformers offered in the most popular worldwide voltages (120 VAC, 230 VAC). All transformers are optional and must be ordered separately. PSW tank switches are optional and must be ordered seperately also.