M&M Smartek

Kärcher, Nilfisk and Bosch each use a different quick-fit system at the gun, none of them interchange, and no packaging says so clearly. That incompatibility is the reason this brand exists.

Adapters first

An adapter that converts a proprietary bayonet to the M22 thread opens up the whole trade accessory range — surface cleaners, foam cannons, long lances, drain hoses. Buying the adapter first and the accessories afterwards is the order that avoids returns.

Two details catch people out: M22 comes in 14 mm and 15 mm (0.59 in) internal bores, and male-to-male is not the same as male-to-female. Match both.

Drain hoses

Fifteen meters reaches most domestic runs from an inspection chamber; thirty is for longer runs behind a trade machine. Beyond about thirty meters, friction eats the pressure and the nozzle stops pulling itself along, whatever the listing suggests.

Rotary nozzles, sized by machine

The dirt blasters here are sold for specific machine ranges, which is the correct way to sell them. A nozzle bore matched to a larger machine drops your pressure; one too small makes the pump cycle. Buy by model, never by appearance.