Main Vents - Help with Sizing

L. Peck

I would be most grateful if someone would help me properly determine the appropriate size of the main vents on my one-pipe steam system.

My home has two mains. The first is 3.0 inches in diameter, 61 feet long, with a Gorton #1.

The second main is 2.5 inches in diameter, 55 feet long, also with a Gorton #1.

Many thanks for any replies.

Steamhead

Those are some big pipes!

The 3-inch one has about twice the air in it as the 2-1/2-incher. So it needs twice the venting capacity. I would vent the 3-incher with two Gorton #2 vents, and the 2-1/2-incher with one Gorton #2.

These vents will allow the mains to fill with steam in about a minute, and the steam to reach the ends of both mains simultaneously.


www.gorton-valves.com

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

L. Peck

Thank you Steamhead for your prompt and professional reply.