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Hoffman Main Vents
HenryT
Member Posts: 128
Hi All. I am intending to build a "tree" to purge the air out of my main vents.
Staying true to the statement you cant overvent, I want to add 2 Hoffman 75 main vents to my system.
Is there a difference between hoffman 75H and hoffman 75? The 75h is rated for high pressure.
The reason im asking is because my local supply store has the 75H for a considerably cheaper price. The specs and NPT are all the same as the 75.
Any expert care to chime in?
Thanks
Staying true to the statement you cant overvent, I want to add 2 Hoffman 75 main vents to my system.
Is there a difference between hoffman 75H and hoffman 75? The 75h is rated for high pressure.
The reason im asking is because my local supply store has the 75H for a considerably cheaper price. The specs and NPT are all the same as the 75.
Any expert care to chime in?
Thanks
0
Comments
-
Dont buy either one
until you figure out how many you need, and what capacity and specification. Get the venting capacity chart http://www.heatinghelp.com/products/Books/5/146/Balancing-Steam-Systems-Using-a-Vent-Capacity-Chart-by-Gerry-Gill-and-Steve-Pajek0
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