10/06/2026
If your bum gun is dripping at the connection, don't replace it. It's almost certainly a 50-sen part.
Nearly every leak at the wall connection comes down to one of three things, and none of them mean the unit is broken.
First, the washer. There's a small rubber washer inside the nut where the hose meets the valve. It hardens and flattens over time, and once it does, it stops sealing and starts to weep. A new one costs cents at any hardware shop. This is the cause maybe eight times out of ten.
Second, the connection's just loose. Things work themselves loose with use and vibration. Hand-tighten it, then a small nudge more with a spanner β snug, not gorilla-tight.
Which leads to the third cause, the opposite mistake: over-tightening. Crank it too hard and you either crush the washer or cross-thread the fitting, and now it leaks worse than before. If you've been forcing it tighter and tighter trying to stop a drip, that's likely why it won't stop.
So before you buy anything: shut the water at the valve, unscrew the connection, check the washer. Replace it if it looks flat, hard, or cracked. Reseat it, tighten it firmly but gently. That fixes the large majority of connection leaks for the price of a teh tarik.