Why does my Gardena leak from the control box

I agree with the other answers listed here. But another way (rather than diver lube) is pipe tape. It is cheap and "fills" in the spacing between the threads. Wind the tape - two or three times around - in the direction that you will be screwing the Gardena adapter on. So to recap - replace washer, check plastic for cracks (on both items), and use pipe tape.

Can I use these on the end of a hose, so I can rapidly swap sprayer nozzles, with other end of the hose attached to spigot as normal?

yes, you can BUT shut off your water supply valve before you do, I use a simple on-off, valve on hose end to save steps, rather than walking back and forth

when ad states that is works with 5/8 and 1/2 it's only referring to the connector, not the hose... correct??

It is the hose diameter. The most common residential size is 5/8. The diameter determine the flow rate. The connectors will be standard and will fit the hose you have. It's basically saying anything over 5/8 you will not get the higher flow rate or pressure.

Do thsese connectors restrict the water flow? They appear to have a reducer at one end!

No, they do not restrict water flow.

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GARDENA (18270-81) 5 Piece Quick Connect Starter Set Fittings and Connectors, For any 5/8 Inch or 1/2 Inch Garden Hose, Sprinkler or Water Spray Nozzle, Made In Germany

GARDENA (18270-81) 5 Piece Quick Connect Starter Set Fittings and Connectors, For any 5/8 Inch or 1/2 Inch Garden Hose, Sprinkler or Water Spray Nozzle, Made In Germany

Product ID: 257906522

Details

Brand
Gardena
Colour
Orange Black
Item dimensions L x W x H
6 x 3.5 x 0.3
Material
Plastic
Size
19 mm x 15.2

⚡Instant water stop

🔗Universal quick connect

❄️Built-in frost protection

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€ 144.84

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Description

💧 Connect Fast, Water Smart, Garden Like a Pro!

ERGONOMIC GRIP DESIGN - Grooved connectors ensure a secure hold—even with wet hands or gloves on.
SEAMLESS WATER CONTROL - Automatic water stop prevents leaks and waste the moment you disconnect.
UNIVERSAL COMPATIBILITY - Fits any 5/8” or 1/2” hose and standard North American fittings for effortless integration.
WEATHER READY PERFORMANCE - Frost protection built-in to keep your system safe through colder seasons.
DURABLE GERMAN ENGINEERING - Precision-made in Germany for long-lasting, watertight reliability.

The GARDENA 5 Piece Quick Connect Starter Set offers a premium, watertight connection system compatible with 5/8” and 1/2” hoses. Engineered in Germany, it features an automatic water stop function, ergonomic grips, and frost protection, ensuring efficient, leak-free watering year-round. Perfect for millennial professionals seeking hassle-free garden irrigation with universal compatibility and durable design.

Specifications

ASIN	B00004SDY5
Brand Name	Gardena
Color	Orange, Black, Grey
Connector Type	Quick Connector
Customer Reviews	4.6 4.6 out of 5 stars (2,345)
Global Trade Identification Number	00066283360040, 20066283360044
Included Components	5 Connectors
Item Dimensions	6 x 3.5 x 0.3 centimeters
Item Length	15 Meters
Item Type Name	HARDWARE_TUBING
Item Weight	45 g
Manufacturer	Gardena
Manufacturer Part Number	B00004SDY5
Material Type	Plastic
Model Number	18270-81.000.00
Number of Pieces	5
Set Name	5 Piece Quick Connect Starter Set
Size	19 mm (esterno) x 15.2 mm (interno)
UPC	718472697009 066283360040
Unit Count	1 Count

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