Swing check instead of a Hartford loop.

virtualplumber

We received a call today with a leaking 1-1/2" return line on an HB Smith G210 112,000 input one pipe Steam boiler. Upon arrival we noticed that there is no loop of any kind. The return is piped in directly with a swing check installed. Would you recommend Installing the old Hartford of a Gifford? Or leave it as is and just replace the leaking return nipple with a new check?

STEVEusaPA

I wouldn't recommend a swing check. Could easily get crud in there and stay open.

Danny Scully

First there was no loop, then there were swing checks, then the Hartford. I’d go Hartford.

EBEBRATT-Ed

Depends on the boilers age and when it will need to be replaced. Why pipe a Hartford now if the boiler will be replaced in a few years then the Hartford will need to be done again? Use a check valve. If the boiler will remain for a while pipe the Hartford

mikeg2015

One one pipe with a dry return, a
Hartford loop serves little
Purpose other than creating a mud leg to trap sediment. Uninstalled one anyway on my boiler mainly for that purpose.