Quick-connect fittings make attaching hoses, guns, lances and accessories faster and easier. Instead of tightening threads, you simply push and click the fittings into place. This guide explains how they work, the different sizes, and how to choose the right ones for your setup.
What Are Quick-Connect Fittings?
Quick-connect fittings use a spring-loaded collar that locks onto a plug (also called a “male” fitting). They allow for fast tool changes and help prevent leaks when installed correctly.
- The “socket” is the female fitting with a sliding collar
- The “plug” is the male fitting that inserts into the socket
- Push-to-connect and pull-to-release
Common Quick-Connect Sizes
1/4" Quick-Connect
- Most common for spray guns, lances and nozzles
- Standard for consumer pressure washers
3/8" Quick-Connect
- Used for high-flow hoses and pro-level washers
- Better for long hose lengths
M22 Threaded Fittings
- Often found on hoses and pressure washer outlets
- Can be converted to quick-connect using an adapter
5 Quick Connect Nozzles for Pressure Washers
Easily switch between sizes for different cleaning tasks around your home
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$10.65
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Why Use Quick-Connects?
- Fast switching between lances, guns and foam cannons
- Reduces thread wear
- Helps prevent leaks when parts are correctly sized
- Compatible with most modern pressure washers
How To Choose The Right Fittings
To get the right quick-connect adapters, match the size of each connection point:
- Washer outlet → usually M22 (convert to quick-connect if needed)
- Gun inlet → often M22 or 3/8"
- Lance and nozzles → usually 1/4"
If in doubt, check the manual — or take a photo of your connectors before buying.
2-Pack Quick-Connect Adapters for Kärcher Pressure Washers
Easily upgrade your Kärcher pressure washer for faster, hassle-free connections
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$13.32
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Common Quick-Connect Setup Example
- M22 → 3/8" quick-connect adapter on the washer outlet
- 3/8" quick-connect socket on the spray gun
- 1/4" quick-connect plug on the lance
- 1/4" plug on all nozzles and foam cannon
This setup allows you to swap between accessories in seconds.
Signs You’re Using The Wrong Fitting
- Leaks around the connection
- Loose or wobbling gun/lance
- Difficulty inserting the plug
- Poor pressure or pulsing spray
