Replacing an internal check valve on a Navien NPE A2 model

This is a very common problem in areas that have hard water. With any type of check valve buildup inside the piece will cause it to Fowell up.
Part# 30024442A
Cost $6.95
You can get this piece in the NPE parts service kit.
It's very important to check this valve when you do your yearly or Quartey service on your customers unites.
It's also important to work the interior/exterior valve.
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I hope you enjoy this video,
Mike
PLEASE USE A LICENSED PLUMBER TO INSTALL AND SERVICE YOU NAVIEN UNIT. FOLLOW ALL STATE AND NATIONAL PLUMBING AND GAS CODES AND TO FILE A PERMIT WITH YOUE LOCAL BUILDING DEPARTMENT.

[@DodgyBagehot]

That notch is at 11. I know, I know. Not important. Great video.

[@RicheySynthetics]

If you decide to take a vacation, come to Billings, Montana, and help me install my tankless water heater. Love your channel been learning a lot. Getting ready to tackle that installation this spring. A little nervous, but I feel confident more now than ever after watching of videos. You’re awesome! Keep the great videos coming!

[@artinghassemian9548]

What is the purpose of applying heat proof grease on the O ring and can you provide the brand of the grease? Thank you for the informative video.

[@-Enrico]

Thanks 😁👍

[@yzmoto80]

Be careful with that “push-turn-wiggle”, more often than not, you’ll be buying baby formula in about 9 months.

[@dugus1975]

In the navien book it said to put the valve at 9 for internal use but you said 9 is external use what is the correct position ?