Kärcher → M22
The bridge between the domestic Kärcher world and the M22 trade standard.
The bridge between the domestic Kärcher world and the M22 trade standard.
The adapter that takes a Kärcher bayonet outlet and presents an M22 male thread — the fitting most trade accessories use.
Four incompatible systems dominate the market: Kärcher’s bayonet, Nilfisk’s Click&Clean, Bosch’s connector and the M22 thread. An accessory bought for the wrong one is simply the wrong accessory, and photographs online are near-identical.
One adapter, rated above your machine’s peak, fully seated, checked for weeping before the job. Never two in series. And if you find yourself needing an adapter for everything you own, the cheaper long-term answer is to buy accessories in your machine’s native fitting.
No such listing: the American Amazon shop answers the reference with a search box rather than a page.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
One is normal practice. Two stacked together is not — each joint can weep, and a joint that parts under pressure whips. Check the adapter's pressure rating exceeds your machine's peak, seat it fully, and look for weeping at low pressure before doing any real work.
A 22 mm (0.87 in) threaded coupling used by most trade and semi-professional machines, and by a large share of the accessory market — drain hoses, lances, surface cleaners. It also comes with two different insert sizes, 14 mm (0.55 in) and 15 mm (0.59 in), which is a further compatibility trap worth checking.
Brass rather than plastic at the joint that carries the full pressure of the machine.
The Nilfisk half of the same problem — and note the thread is female, not male.
A one-gallon pressure-washer concentrate making up to 16 gallons of soap, or usable neat in a direct-concentrate system.
Best for: A Briggs washer with a direct-concentrate system, on siding and patios
A 32-ounce pressure-washer concentrate making up to 4 gallons of soap, or usable neat in a direct-concentrate system.
Best for: A Briggs washer with a direct-concentrate system, where a small bottle and no mixing are the point
A concentrated vehicle wash and wax that rinses without residue, for pressure washers, foam cannons or manual use.
Best for: A car, a motorcycle or an RV, where a wax pass and no residue matter more than cost per gallon
Prices quoted in these summaries are dated readings. The live price is shown next to each product.