OK, the parts in the picture are from my Insta-Hot. It’s actually a “Franke, Little Butler”. When you call the customer service number listed on the tank, you’re calling “Anaheim mfg”, who sells no service parts. The plastic “nut” is 1/2″ flare thread. It slides over the copper 1/4″ supply tube, pinching the silicone barrel and creating a seal. The supply tube is not under pressure until you move the handle on the counter mounted dispenser, forcing water into the tank. A regular 1/2″ flare nut is tapered for the 1/2″ flared tubing. I’m afraid it wont seal tight enough. Someone suggested a 1/2″ X 1/4″ flare reducing, but haven’t been able to come up with one. I’m again concerned about the flare in the nut not compressing the silicone barrel enough. The plastic nut has a flat top. Any suggestions will be appreciated. Sorry the picture isn’t crisper.
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