Air Vents- Need to know the type and Model No.

Suchitapage · November 14

I have some photos of air vents in a building which has one-pipe steam system. I would like to know the type of these air vents and whether they are applicable to one-pipe steam system.

My hunch says that this might be automatic air vents, but need to confirm.

Thank you.

Regards,

Jamie Hall · November 14

Look like big Hoffman main air vents for steam. Quite suitable.

Steamhead · November 14

What model number is on those vents?

EBEBRATT-Ed · November 15

Hoffman. Should be 75 or 75H depending on the pressure.

Steamhead · November 15

Might also be 76 or 79. If the latter, they're wrong.

Suchitapage · November 17

Thanks a lot for your help

https://forum.heatinghelp.com/discussion/comment/1872366#Comment_1872366

I don't know the model no since I never been to this building. The super over there sent me these photos asking me about it. Knew they were for venting, but couldn't figure the type and model no.

Suchitapage · November 17

Thanks a lot for your help!

Air Vents- Need to know the type and Model No.

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