Hi, Experts,

I have anti-sephon valves on the outlet water taps in the outside of house.

Now it is leaking from one of small holes on the sephon valve (it is designed that way or about 12 holes were designed & machined there) I think. It leaks or splashes through the small hole when I turn the tap on.

In fact, It went out to leak or splash one day (hot day) by itself. Fortunately I was nearby and turned it off.

My question is:

Is it repairable? is it hard to replace the entire tape/sephon valve with it? I have never done it. Please teach me how.

Thanks a lot,