Bianco Rainsaver – MK4e

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The RAINSAVER MK4E is an evolutionary change in our range of Bianco Rainsaver devices that switches seamlessly between tank water and the mains supply. Not only does it conserve water, it’s easy to install. Not to mention, each control carries a peace-of-mind 2-year Infield Warranty (Australia only) and is WaterMark approved. The Bianco Rainsaver MK4E is Australian owned and designed so you know it’s ideal for Australian and New Zealand homeowners.


Pressure Tanks, Pressure Cells, or Accumulators, whatever you call them, are ideally suited for a wide range of general applications including pump booster systems, thermal expansion, irrigation systems, and minimizing water-hammer.

Davey Super Cells

Special Features

  • Single diaphragm design 100% potable quality butyl
  • Patented 316 stainless steel connection
  • Virgin polypropylene liner, so no water touches plain steel
  • The internal clench ring becomes more secure at higher pressures
  • Appliance quality two-part polyurethane, epoxy primed paint finish-almond
  • Brass stemmed air valve and o-ring sealed valve cap
  • NSF standard 61, CE/PED, WRAS approvals
  • Pre-Charged air side 28 PSI/ 1.9 Bar
  • Maximum temperature up to 90 °C
  • Standard maximum pressure 150 PSI/ 10 Bar
  • Models available up to 235 PSI/ 16 Bar
  • 5 Year Replacement Warranty