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removing 80 year old pressure relief?
Finally talked a friend into installing a new pressure relief on his 80+ year old three pass boiler.
I'm wondering how hard its going to be to remove the hold one? My first assumption is to throw a 2 foot wrench on it and see what happens.
Plans are to install a modern 15PSI relief with a 1" to 3/4" brass bushing.
Single pipe quasi-vapor system.
Typical operating pressure 0.14 - 0.43 oz measured with Magnehelic. High pressure limit set to 1oz. Weil-McLain EG-40 rated for 325sqft intentionally connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
Steam system pictures updated 1/25/15.https://picasaweb.google.com/thetube0a3/Boiler?authkey=Gv1sRgCImUxIqv9436MQ#