pressure

wayne evans

i have a one pipe steam system how much pressure should there be the radiator that will not heat has the steam just drifting out when i disconnect it and the other radiators down the line do not get steam . i took the main vent out same thing it just drifts out.

Brad White_9

Much less than a pound....

Any blockage in your piping? What is the boiler pressure? It takes so little...

John@Reliable_13

New boiler or existing \"was\" working until................

Ken L.

down the line

When you remove the radiator vents from the cold radiators, what happens? Do these radiators down the line heat up?

I was curious about how much pressure is at the radiators. Using a Magnehelic guage I read up to 20 inches of pressure at a working radiator. (27 inches = 1 PSI) Bear in mind this varied directly with the pressure in the boiler. Also 1 PSI in not much.

This radiator was cold until the vent was removed. I did not see or feel much steam with the vent out. Upon replacing the radiator vent it works great.

This is a possibility to be considered.

BTW, I use varivalves(R)

wayne evans

pressure

when i take the vents out nothing happens no steamthe pipe coming off the main line going to the raditor gets hot about half way up if i disconnet the radiator it gets hot all the way my pressure gage reads 0 but the radiators before the end work fine even on the 2nd floor