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Product Details

Jabsco Par-Max 1 water pressure system pumps are available in automatic and manual configurations. The Par Max 1 is a miniature water pressure pump that serves 1 or 2 outlets measuring 3/8 inch. A built-in pressure switch automatically starts and stops pump when a faucet is opened or closed.

Jabsco water pressure pumps are specifically designed to provide super quiet, ultra smooth flow, with bumpers to reduce affects of vibration and shock, battery conserving low amperage motors, and corrosion proof bases and marine grade components.

Info & Guides

Technical Information

  • Offered in Manual or Automatic design.
  • 1.1 gpm (4.3 lpm) open flow output.
  • 4 Amp Fuse.
  • Self-priming up to 4ft.
  • Dual diaphragm operation.
  • Thermal overload protection automatically stops motor should it overheat due to overload, with auto re-start feature.
  • Diaphragm design allows dry running.
  • Pressure switch cut-in 22 psi (1.5 bar), cut-out 35 psi (2.4 bar).
  • Complies with USCG 183.410 and ISO 8846 MARINE (Ignition Protection).

Reviews for Jabsco Par-Max 1 Water Pressure System Pumps

3 of 3 Reviews

July 31, 2019

Waste of money
By John from Franklin, NH

Verified Purchase

Does not shut off when faucet is shut off, when power is shut off loses pressure. Had to replace. DO NOT BUY.

Bottom Line No, I would not recommend to a friend

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July 7, 2019

Very unhappy
By John from Portland, ME

Verified Purchase

This pumps works but does not shut off when pressure is reached.

Bottom Line No, I would not recommend to a friend

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June 5, 2011

Water Pump
By Sailor from East Brunswick, NJ

Pump too small for water pressure using 2 outlets. Do not pump enough water for a shower.


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