You can buy a repair kit. When mine went I just bought another one from Bunnings and swapped them over ,easy peesie job.
trade4us2,
Feb 14, 5:58pm
The brass nut labelled 920533* just sits there while the diaphragm moves up and down 50,000 times. There is nothing to stop the nut unscrewing after a few years. Water then leaks past the diaphragm and rusts the spring which then collapses. This is typical bad design by Nefa.
trade4us2,
Feb 14, 6:00pm
But the diaphragm is perfect, so a repair kit is not needed. The nut should have a locknut.
tweake,
Feb 14, 7:27pm
not sure if a lock nut would even stop that. bit of loctite possibly. most of the regulators i deal with its just a rivet. that works loose, leaks and screws up the pressure.
trade4us2,
Feb 14, 9:26pm
I will put in a brass screw that is long enough to have two brass nuts that can be locked together. Why do I have to keep redesigning products that go wrong?
pauldw,
Feb 14, 11:43pm
Careful you're probably driving a car with only 1 nut on each wheel stud.
trade4us2,
Feb 15, 12:21am
My wheels are not made of rubber (and the Nefa valve is made of rubber). I put the nuts on with a torque wrench.
tegretol,
Aug 15, 6:43pm
Spot on. $25 and an hours work.
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