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 (1084 Avail)

    $14.55 / each

    $136.50 / box
    10 x $13.65

     
  • #4, 1/8" Angle Air Valve View Specs
    • SKU: J4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (1358 Avail)

    $7.15 / each

    $75.00 / box
    12 x $6.25

     
  • #5, 1/8" Angle Air Valve View Specs
    • SKU: J5
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (1349 Avail)

    $7.15 / each

    $76.20 / box
    12 x $6.35

     
  • #6, 1/8" Angle Air Valve View Specs
    • SKU: J6
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (1064 Avail)

    $7.15 / each

    $76.20 / box
    12 x $6.35

     
  • #C 1/8" Angle Air Valve View Specs
    • SKU: JC
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (1352 Avail)

    $7.15 / each

    $76.20 / box
    12 x $6.35

     
  • #D 1/8" Angle Air Valve View Specs
    • SKU: JD
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (1477 Avail)

    $7.15 / each

    $76.20 / box
    12 x $6.35

     
  • #4, 1/8" Straight Air Valve View Specs
    • SKU: J4S8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (151 Avail)

    $7.79 / each

    $83.40 / box
    12 x $6.95

     
  • #5, 1/8" Straight Air Valve View Specs
    • SKU: J5S8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (244 Avail)

    $7.79 / each

    $83.40 / box
    12 x $6.95

     
  • #6, 1/8" Straight Air Valve View Specs
    • SKU: J6S8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (62 Avail)

    $7.79 / each

    $83.40 / box
    12 x $6.95

     
  • #C, 1/8" Straight Air Valve View Specs
    • SKU: JCS8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (2 Avail)

    $7.79 / each

    $83.40 / box
    12 x $6.95

     
  • #D, 1/8" Straight Air Valve View Specs
    • SKU: JDS8
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (210 Avail)

    $7.79 / each

    $83.40 / box
    12 x $6.95

     
  • #4, 1/4" Straight Air Valve View Specs
    • SKU: J4S4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (21 Avail)

    $7.99 / each

    $85.80 / box
    12 x $7.15

     
  • #5, 1/4" Straight Air Valve View Specs
    • SKU: J5S4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (28 Avail)

    $7.99 / each

    $85.80 / box
    12 x $7.15

     
  • #6, 1/4" Straight Air Valve View Specs
    • SKU: J6S4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (224 Avail)

    $7.99 / each

    $85.80 / box
    12 x $7.15

     
  • #C, 1/4" Straight Air Valve View Specs
    • SKU: JCS4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (115 Avail)

    $7.99 / each

    $85.80 / box
    12 x $7.15

     
  • #D, 1/4" Straight Air Valve View Specs
    • SKU: JDS4
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (113 Avail)

    $7.99 / each

    $85.80 / box
    12 x $7.15

     
  • #7, 1/8" Straight Auto Vent View Specs
    • SKU: 7
    • Brand: Jacobus - Maid O Mist
    In Stock!
    Ships in 24-48 Hrs (120 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 (95 Avail)

    $4.15 / each

    $39.50 / box
    10 x $3.95

     
  • #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 (7261 Avail)

    $9.49 / each

    $89.50 / box
    10 x $8.95

     
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