Right size. Easy to change.

Right size. Easy to change.

Typically check valves like this seem to last me about 2 years or so before they fail. Time will tell if this particular brand is any better or worse, but for now they're working perfectly. I have an elevated spa/hot tub that spills into the pool, and when the check valves need replacement, it's obvious because my hot tub is empty in the morning.They look and fit like OEM Zodiak or Jandy check valves. I replaced both valves in this two-pack under my wife's watchful eye in under 10 minutes. They come with the necessary O-rings, and because I have two to replace each time, I really like that they come in this two-pack.If these last for at least 2 years, I'll be back for more when they fail.Hope this helps.

Easy to install and a perfect fit. Spa still leaks down to pool level over night. PROBABLY a valve leaking air somewhere else. Valves are all over 10 years old and I can hear some of them leaking in certain positions.