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check valve

Paul S_3
Paul S_3 Member Posts: 1,257
Do you need a check valve on the feed line to any boiler in NYC? Is it code?.....Paul S
ASM Mechanical Company
Located in Staten Island NY
Servicing all 5 boroughs of NYC.
[email protected]


  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
    Not sure about New York City/State, but...

    In the jurisdiciton I work in, it requires MORE than just a single seated check valve. It requires (residentially) a double check with an intermediate vent, and if it is commercial project, minimum requirement here is a reduced pressure principle back flow preventer.

    Best to check with the authority having jurisdiction. Also be aware of annual testing requirements.

    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • Bob Harper
    Bob Harper Member Posts: 1,030
    backflow protection

    You will find that in the applicable plumbing code but it is also an EPA reg. that your local water board can and will enforce. Need isolation valves to test and service. As stated, double check with atmospheric vent. If you install a bypass around an automatic feed valve for fast refilling such as after equipment replacement, the bypass must also be backflow protected.
  • Steve_210
    Steve_210 Member Posts: 645
    On steam

    You need backflow and a check Valve below the waterline

    Type of Backflow depends on size and whether you're using chemicals

    If you can email me I will send you Latest codes that I have (2009) as well as contact info for boiler division

    Boiler division Usually only inspect if it is mixed-use Or more than five families
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