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AquaFX High Pressure Automatic Shut Off Kit


Item #: 5V27929

Temporarily Out of Stock

AquaFX High Pressure Automatic Shut Off Kit

*Sold as a kit - This product will only work when used in conjunction with a check valve (Back flow preventer -- Included in kit)*

This High Pressure ASO is designed to shut off at 60% of line pressure and has built-in ports for Quick Connect 1/4" polyethylene tubing connections. This unit is tested and certified by the WQA Gold Seal program against NSF/ANSI 58 standards.

This kit is ideal for systems in which the pressure is higher than 45 PSI. If the pressure is less than 45 PSI, the AquaFX Hydraulic Automatic Shut Off Kit is recommended instead.

  • Eliminate ASO chatter.
  • Will shut down RO unit in fraction of time vs. traditional ASO.
  • Perfect for reservoir applications where an automatic top-off is desired
  • Designed for high pressure systems (45 PSI or higher)

Manufacturer information

AquaFx manufactures water treatment systems in the USA in Winter Park, FL. They maintain a shop that puts Americans to work! They build some of the finest reverse osmosis systems we have seen along with a plethora of useful upgrades and replacement parts. They have over 45 years of water treatment engineering experience to help you produce pollutant-free water for your freshwater (RO) or saltwater (RO/DI) aquarium.

5 Stars


Reviewed on
September 09, 2019

Yes, I would recommend this.

Fantastic Shut Off Kit

Pros: Quietest instant shut off performance.

Cons: Should include a universal float valve.

High pressure shut off kit is the only one that should be sold. Instant water shutoff and no valve moaning sound or chatter. This is a fantastic product. The only thing I missing is the float valve.

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Reviewed on
April 11, 2019

Yes, I would recommend this.


Pros: Perfect fit

Cons: None

Worked exactly like described.

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jamie myer

Reviewed on
January 27, 2016

Yes, I would recommend this.


Replaced a faulty solenoid that wouldnt shut all the way, works with my 90psi water.

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Reviewed on
February 19, 2015

Yes, I would recommend this.

An ASOV that works!

I have had other ASOVs that don't fully cut off the RODI, and let waste water continue to run. This one actually fully cuts off the RODI. Not easy to plumb since it is different plumbing from a normal ASOV.

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