External Factor for Leak Problem
1 Check if your spray nozzle fits with the hose properly. The hose connector is a universal standard.
2 The sprayer also should built in has a leak-proof washer, if not it may cause the leak problem.
Proper Storage and Use
1 When using the hose, try not to use at the highest flow rate if your pressure if your water pressure is strong
2 Don't store the hose in the sun or with pressure in the hose. Completely drain prior to storage. Cover as necessary to protect from the sun or keep it shaded
3 During use try not to step on the pressurized hose and use caution so it does not get snagged or caught on a sharp object.
4 The valve may be a little tight the first time, please just use a spanner to try
5 The length it expands depends on the water pressure, so please ensure the enough press then it can expand to the full length.