Maid O' Mist Air Valves

Jacobus Air Valves are also referred to as Maid O' Mist Air Valves. They are designed for use in steam heating systems. There are many models of Jacobus Air Valves available on our website.

20 products shown

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  • #1, 3/4" x 1/2" Main Vent Valve View Specs
    • SKU: J1
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (188 Avail)

    $14.35 / each

    $134.50 / box
    10 x $13.45

     
  • #4, 1/8" Angle Air Valve View Specs
    • SKU: J4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (448 Avail)

    $6.85 / each

    $71.40 / box
    12 x $5.95

     
  • #5, 1/8" Angle Air Valve View Specs
    • SKU: J5
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (651 Avail)

    $6.85 / each

    $73.08 / box
    12 x $6.09

     
  • #6, 1/8" Angle Air Valve View Specs
    • SKU: J6
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (706 Avail)

    $6.85 / each

    $73.08 / box
    12 x $6.09

     
  • #C 1/8" Angle Air Valve View Specs
    • SKU: JC
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (450 Avail)

    $6.85 / each

    $73.08 / box
    12 x $6.09

     
  • #D 1/8" Angle Air Valve View Specs
    • SKU: JD
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (191 Avail)

    $6.85 / each

    $73.08 / box
    12 x $6.09

     
  • #4, 1/8" Straight Air Valve View Specs
    • SKU: J4S8
    • Brand: Jacobus - Maid O Mist
    Non-Stock Item
    Allow 2-3 Weeks to Ship Out

    $7.45 / each

    $78.60 / box
    12 x $6.55

     
  • #5, 1/8" Straight Air Valve View Specs
    • SKU: J5S8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (148 Avail)

    $7.45 / each

    $78.60 / box
    12 x $6.55

     
  • #6, 1/8" Straight Air Valve View Specs
    • SKU: J6S8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (50 Avail)

    $7.45 / each

    $78.60 / box
    12 x $6.55

     
  • #C, 1/8" Straight Air Valve View Specs
    • SKU: JCS8
    • Brand: Jacobus - Maid O Mist
    Non-Stock Item
    Allow 2-3 Weeks to Ship Out

    $7.45 / each

    $78.60 / box
    12 x $6.55

     
  • #D, 1/8" Straight Air Valve View Specs
    • SKU: JDS8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (31 Avail)

    $7.45 / each

    $78.60 / box
    12 x $6.55

     
  • #4, 1/4" Straight Air Valve View Specs
    • SKU: J4S4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (33 Avail)

    $7.65 / each

    $81.48 / box
    12 x $6.79

     
  • #5, 1/4" Straight Air Valve View Specs
    • SKU: J5S4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (16 Avail)

    $7.65 / each

    $81.48 / box
    12 x $6.79

     
  • #6, 1/4" Straight Air Valve View Specs
    • SKU: J6S4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (280 Avail)

    $7.65 / each

    $81.48 / box
    12 x $6.79

     
  • #C, 1/4" Straight Air Valve View Specs
    • SKU: JCS4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (139 Avail)

    $7.65 / each

    $81.48 / box
    12 x $6.79

     
  • #D, 1/4" Straight Air Valve View Specs
    • SKU: JDS4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (102 Avail)

    $7.65 / each

    $81.48 / box
    12 x $6.79

     
  • #7, 1/8" Straight Auto Vent View Specs
    • SKU: 7
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (82 Avail)

    $20.95 / each

    $99.75 / box
    5 x $19.95

     
  • #9AS Shortstop Automatic Shutoff Valve View Specs
    • SKU: 9AS
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (98 Avail)

    $3.95 / each

    $37.50 / box
    10 x $3.75

     
  • #68, 1/4" Auto-Vent View Specs
    • SKU: MO68
    • Brand: Jacobus - Maid O Mist
    Out of Stock
    Allow 7-10 Days to Ship Out

    $11.15 / each

     
  • #67, 1/8" Auto-Vent View Specs
    • SKU: MO67
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (5911 Avail)

    $8.95 / each

    $85.90 / box
    10 x $8.59

     
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