Shurflo’s series 4158 Aquaking 2 SUPREME automatic freshwater pressure pumps are 4 chamber 5 gallon per minute (19 LPM) pumps that deliver ultra smooth “just like home” performance for multi-fi xture applications (up to 4) - shower, galley, head Etc.

A built-in mechanical bypass function enables these pumps to vary the flow rate for any on-demand condition, including low fl ow, without cycling and without the need for an accumulator.

They have heavy duty motors with O ring sealed end bells and sealed wire entries on the motor shell and pressure switch. These pumps have 1/2” male thread NPT ports and include an inlet strainer and 2 x 1/2” (12mm) straight hose barb fi ttings.

• Smooth flow 4 chamber diaphragm with quiet operation
• 5 GPM (19 LPM) flow with 55 PSI shut-off pressure
• Can operate at low flow conditions without cycling
• Self priming to 1.8 metres (6 ft) vertical lift
• Corrosion resistant seamless electro-coated motor casing
• Sealed pressure switch unit and motor casing
• Ignition protection and thermal overload protection
• Santoprene Diaphragm with EPDM valves & seals
• Can run dry for periods without damage