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Vaporstat, which one?

Tom_4 Member Posts: 16
Can someone tell me which model vaporstat I need for a gas boiler piped to a moline steam system. Thank you


  • L 408A 1132

  • Dale
    Dale Member Posts: 1,317
    0-4 psi

    The 0-4 psi is the L408A1157 or the L608A1053 that is spdt but will work fine too just connect r an b.
  • I find the 0-1 PSI more sensetive under a pound

    and that Moline system should run at well under a pound. The 0-4 might act just like the P 404 A on that system, in my experience.

  • Dale
    Dale Member Posts: 1,317
    Thanks Noel

    I should have focused on the "Moline" part of the question. Since the ideal range for a control is the center the lower range option would be best. I must say I have never used the 1132 since I'm usually looking for 1/2 to 2psi accuracy and the boilers here are usually way oversized and the less short cycle the better.
  • Tom_4
    Tom_4 Member Posts: 16
    Thanks for the info

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