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Slim's Detailing Promax 4-Way Doser


FREE next day delivery on UK orders over £60 for stock items.

Non stock items including equipment and special orders, buyer will be contacted with a delivery schedule.  

This is the perfect addition for anyone looking for the perfect dilution every time with no spills and removing human error. Once set up, this doser provides perfect proportioning at the push of a button. Connect a water supply and up to four different products can be dispensed at different mix ratios just by twisting the dial.

The robust and reliable unit provides precisely-diluted chemical solutions at up to 30 litres (8 gallons) per minute. The system’s dilution accuracy is driven by a range of metering tips – included as standard – that allow users to make the finest adjustments and maximize efficiency for a broad range of chemicals.

ProMax’s wall bracket eliminates the need to open the enclosure during installation, enabling tool-free mounting, while its modular space-saving design allows further units to be easily added to an existing installation.


  • Tamper-proof housing and activation mechanism
  • User-friendly 4 way product selection dial
  • Auto-activating venturi requires no downstream restriction to create back pressure