Navien Check Valve. He said the check valve downstream of the recirculation pump should be replaced yearly. Get genuine navien factory oem valves for your navien tankless water heater.
Check valve for navien npe series tankless water heaters part #n30008360a | item #4486689 | manufacturer part #30008360a pro pricing list pricing no pricing Add to a new shopping list. All navien valves are brand new in the original factory packaging and are guaranteed to fit and function.