Main Vent Stuck Against Joist

ceilinginway

Hello, Looking for ideas on how to replace this old ventrite 35 main vent that is sitting against the joist. How to get the vent off and then what kind of setup to replace it with? This is on a 2” 33 ft long main off the right side of the boiler.

thanks for any tips!

STEAM DOCTOR

Remove the nipple or fitting from below

nicholas bonham-carter

It appears to be in the wrong place on the steam line. It should be at the end. These main vents should be allowing the air to escape without resistance from the whole length of pipe.
If your pipe returns to the boiler, and drops down to the floor, then it should be there. If the supply pipe rises up from the boiler to the last radiator, then the main vent must be after the last radiator on the line.--NBC

STEAM DOCTOR

@nicholas bonham-carter  Seems to be at end of dry return 

Jamie Hall

STEAM DOCTOR said:

Remove the nipple or fitting from below

and once you do that, you can use three nipples and two elbows to offset the new one from the joist.

nicholas bonham-carter

Quite right, it appeared to be on the supply in front of it in the picture.
I would break the elbow with two hammers (have a replacement on hand), and use a new nipple and coupling for the new vent, with a couple of elbows and nipples, to move the vent location away from the joist.—NBC

ceilinginway

This is very helpful. Thanks for taking a look at this.

mattmia2

you could replace that 45 with a 45, nipple, and coupler or street 45 and coupler to make it vertical further out from the joist.