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  • 3/4" Sweat DISCAL Compact Air Separator Product Image
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    3/4" Sweat DISCAL Compact Air Separator 551022A 3/4" Sweat DISCAL Compact Air Separator
    SKU: 551022A
    Brand: Caleffi
    $62.99 each
    12
    Wed, Dec 16
    15
    QtyArrives
    12 Wed, Dec 16
    3 Fri, Dec 18 – Mon, Dec 21
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  • 2" MNPT 551 Series DISCALDIRT Commercial Steel Air Separator Product Image
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    2" MNPT 551 Series DISCALDIRT Commercial Steel Air Separator 551050AT 2" MNPT 551 Series DISCALDIRT Commercial Steel Air Separator
    SKU: 551050AT
    Brand: Caleffi
    $1,299.99 each
    1
    Fri, Dec 18 – Mon, Dec 21
    1
    QtyArrives
    1 Fri, Dec 18 – Mon, Dec 21
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  • 3/4" Sweat DISCAL Compact Air Separator w/ Service Check Valve Product Image
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    3/4" Sweat DISCAL Compact Air Separator w/ Service Check Valve 551022AC 3/4" Sweat DISCAL Compact Air Separator w/ Service Check Valve
    SKU: 551022AC
    Brand: Caleffi
    $67.67 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
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  • 1" NPT Female DISCAL <br> Air Separator Product Image
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    1" NPT Female DISCAL Air Separator 551006A 1" NPT Female DISCAL Air Separator
    SKU: 551006A
    Brand: Caleffi
    (2)
    $108.14 each
    27
    Wed, Dec 16
    30
    QtyArrives
    27 Wed, Dec 16
    3 Fri, Dec 18 – Mon, Dec 21
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  • 3/4" NPT Female DISCAL Air Separator with Automatic 1/2" Check Product Image
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    3/4" NPT Female DISCAL Air Separator with Automatic 1/2" Check 551005AC 3/4" NPT Female DISCAL Air Separator with Automatic 1/2" Check
    SKU: 551005AC
    Brand: Caleffi
    $115.99 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 3/4" NPT Female DISCAL Compact Air Separator w/ Service Check Valve Product Image
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    3/4" NPT Female DISCAL Compact Air Separator w/ Service Check Valve 551003AC 3/4" NPT Female DISCAL Compact Air Separator w/ Service Check Valve
    SKU: 551003AC
    Brand: Caleffi
    $76.30 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
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  • 3/4" NPT Female DISCAL Air Separator Product Image
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    3/4" NPT Female DISCAL Air Separator 551003A 3/4" NPT Female DISCAL Air Separator
    SKU: 551003A
    Brand: Caleffi
    $65.99 each
    5
    Wed, Dec 16
    5
    QtyArrives
    5 Wed, Dec 16
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  • 2" NPT Female DISCAL Air Separator with Automatic 1/2" Check Product Image
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    2" NPT Female DISCAL Air Separator with Automatic 1/2" Check 551009AC 2" NPT Female DISCAL Air Separator with Automatic 1/2" Check
    SKU: 551009AC
    Brand: Caleffi
    $252.99 each
    2
    Fri, Dec 18 – Mon, Dec 21
    2
    QtyArrives
    2 Fri, Dec 18 – Mon, Dec 21
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  • 1" NPT Female DISCAL<br> Air Separator with<br> Automatic 1/2" Check Product Image
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    1" NPT Female DISCAL Air Separator with Automatic 1/2" Check 551006AC 1" NPT Female DISCAL Air Separator with Automatic 1/2" Check
    SKU: 551006AC
    Brand: Caleffi
    $110.95 each
    1
    Fri, Dec 18 – Mon, Dec 21
    1
    QtyArrives
    1 Fri, Dec 18 – Mon, Dec 21
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  • 1-1/4" NPT Female DISCAL Air Separator Product Image
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    1-1/4" NPT Female DISCAL Air Separator 551007A 1-1/4" NPT Female DISCAL Air Separator
    SKU: 551007A
    Brand: Caleffi
    $165.35 each
    2
    Fri, Dec 18 – Mon, Dec 21
    2
    QtyArrives
    2 Fri, Dec 18 – Mon, Dec 21
    Questions? Call 1-888-757-4774
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  • 1-1/4" NPT Female DISCAL<br> Air Separator with<br> Automatic 1/2" Check Product Image
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    1-1/4" NPT Female DISCAL Air Separator with Automatic 1/2" Check 551007AC 1-1/4" NPT Female DISCAL Air Separator with Automatic 1/2" Check
    SKU: 551007AC
    Brand: Caleffi
    $159.00 each
    1
    Fri, Dec 18 – Mon, Dec 21
    1
    QtyArrives
    1 Fri, Dec 18 – Mon, Dec 21
    Questions? Call 1-888-757-4774
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  • 1" Sweat DISCAL Air Separator Product Image
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    1" Sweat DISCAL Air Separator 551028A 1" Sweat DISCAL Air Separator
    SKU: 551028A
    Brand: Caleffi
    $107.99 each
    34
    Wed, Dec 16
    34
    QtyArrives
    34 Wed, Dec 16
    Questions? Call 1-888-757-4774
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  • 1" Sweat DISCAL Air Separator w/ Service Check Valve Product Image
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    1" Sweat DISCAL Air Separator w/ Service Check Valve 551028AC 1" Sweat DISCAL Air Separator w/ Service Check Valve
    SKU: 551028AC
    Brand: Caleffi
    (1)
    $109.99 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1" Press DISCAL Air Separator Product Image
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    1" Press DISCAL Air Separator 551066A 1" Press DISCAL Air Separator
    SKU: 551066A
    Brand: Caleffi
    $140.00 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1-1/4" Sweat DISCAL Air Separator w/ Service Check Valve Product Image
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    1-1/4" Sweat DISCAL Air Separator w/ Service Check Valve 551035AC 1-1/4" Sweat DISCAL Air Separator w/ Service Check Valve
    SKU: 551035AC
    Brand: Caleffi
    $165.99 each
    2
    Fri, Dec 18 – Mon, Dec 21
    2
    QtyArrives
    2 Fri, Dec 18 – Mon, Dec 21
    Questions? Call 1-888-757-4774
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  • 3/4" Press Union DISCAL Rotating Collar Air Separator Product Image
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    3/4" Press Union DISCAL Rotating Collar Air Separator 551765A 3/4" Press Union DISCAL Rotating Collar Air Separator
    SKU: 551765A
    Brand: Caleffi
    $144.99 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1-1/4" Sweat DISCAL Air Separator Product Image
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    1-1/4" Sweat DISCAL Air Separator 551035A 1-1/4" Sweat DISCAL Air Separator
    SKU: 551035A
    Brand: Caleffi
    (3)
    $156.43 each
    15
    Wed, Dec 16
    18
    QtyArrives
    15 Wed, Dec 16
    3 Fri, Dec 18 – Mon, Dec 21
    Questions? Call 1-888-757-4774
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  • 1-1/4" Press DISCAL Air Separator w/ Check Valve Product Image
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    1-1/4" Press DISCAL Air Separator w/ Check Valve 551067AC 1-1/4" Press DISCAL Air Separator w/ Check Valve
    SKU: 551067AC
    Brand: Caleffi
    $179.99 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1-1/2" NPT Female DISCAL<br> Air Separator Product Image
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    1-1/2" NPT Female DISCAL Air Separator 551008A 1-1/2" NPT Female DISCAL Air Separator
    SKU: 551008A
    Brand: Caleffi
    $216.04 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1" Press DISCAL Air Separator w/ Check Valve Product Image
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    1" Press DISCAL Air Separator w/ Check Valve 551066AC 1" Press DISCAL Air Separator w/ Check Valve
    SKU: 551066AC
    Brand: Caleffi
    $139.99 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 2" Press DISCAL Air Separator Product Image
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    2" Press DISCAL Air Separator 551069A 2" Press DISCAL Air Separator
    SKU: 551069A
    Brand: Caleffi
    $339.99 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1-1/2" NPT Female<br>DISCAL Air Separator<br>with 1/2" Check Valve Product Image
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    1-1/2" NPT Female DISCAL Air Separator with 1/2" Check Valve 551008AC 1-1/2" NPT Female DISCAL Air Separator with 1/2" Check Valve
    SKU: 551008AC
    Brand: Caleffi
    $207.25 each
    1
    Fri, Dec 18 – Mon, Dec 21
    1
    QtyArrives
    1 Fri, Dec 18 – Mon, Dec 21
    Questions? Call 1-888-757-4774
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  • 1-1/4" Press DISCAL Air Separator Product Image
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    1-1/4" Press DISCAL Air Separator 551067A 1-1/4" Press DISCAL Air Separator
    SKU: 551067A
    Brand: Caleffi
    $179.00 each
    Tue, Dec 29 – Tue, Jan 5
    Arrives
    Tue, Dec 29 – Tue, Jan 5
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 2" NPT Female DISCAL<br> Air Separator Product Image
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    2" NPT Female DISCAL Air Separator 551009A 2" NPT Female DISCAL Air Separator
    SKU: 551009A
    Brand: Caleffi
    $312.12 each
    2
    Fri, Dec 18 – Mon, Dec 21
    2
    QtyArrives
    2 Fri, Dec 18 – Mon, Dec 21
    Questions? Call 1-888-757-4774
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FAQs, Manuals & Videos

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  • Air separators are used to continuously remove the air contained in the  hydronic circuits of heating and cooling systems. The air discharge capacity of these devices is very high. They are capable of removing automatically all the air present in the system down to the micro-bubble level. The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.

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