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S Series

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Buy Armtrong Series S In-Line Circulator Pumps @ PumpProducts.com. The Armstrong S Series In-Line Circulator Pump is suitable for hydronic heating and cooling, multi-stage zoning and general industrial service applications. The S series is built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction. This series has been used by HVAC professionals for decades because it is cost-effective, durable and easy to maintain.

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  1. Armstrong 174031MF-013, Model S-25, Cast Iron In-Line Pump Without Flanges, Series S, 1/12 HP, 115 Volts, 1 Phase, 31 GPM Max, Maintenance Free Design

    Armstrong 174031MF-013, Model S-25, Cast Iron In-Line Pump Without Flanges, Series S, 1/12 HP, 115 Volts, 1 Phase, 31 GPM Max, Maintenance Free Design

    Armstrong Sku: 174031MF-013
    $550.97
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  2. Armstrong 174031MF-043, Model S-25, Bronze In-Line Pump Without Flanges, Series S, 1/12 HP, 115 Volts, 1 Phase, 31 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 174031MF-043, Model S-25, Bronze In-Line Pump Without Flanges, Series S, 1/12 HP, 115 Volts, 1 Phase, 31 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 174031MF-043
    $960.65
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  3. Armstrong Cast Iron In-Line Pump

    Armstrong 174033MF-013, Model S-35, Cast Iron In-Line Pump With, 2" NPT Flanges, Series S, 1/6 HP, 115 Volts, 1 Phase, 72 GPM Maximum

    Armstrong Sku: 174033MF-013
    $1,218.71
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  4. Armstrong 106284-136, Model S-55-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Sleeve Bearing Design

    Armstrong 106284-136, Model S-55-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Sleeve Bearing Design

    Armstrong Sku: 106284-136
    $1,452.26
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  5. Armstrong Cast Iron In-Line Pump

    Armstrong 174036MF-113, Model S-45, Cast Iron In-Line Pump, Without Flanges, Series S, 1/4 HP, 115 Volts, 1 Phase, 109 GPM Maximum

    Armstrong Sku: 174036MF-113
    $1,598.71
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  6. Armstrong 174033MF-043, Model S-35, Bronze In-Line Pump With 2" NPT Flanges, Series S, 1/6 HP, 115 Volts, 1 Phase, 72 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 174033MF-043, Model S-35, Bronze In-Line Pump With 2" NPT Flanges, Series S, 1/6 HP, 115 Volts, 1 Phase, 72 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 174033MF-043
    $2,180.64
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  7. Armstrong 174037MF-113, Model S-46, Cast Iron In-Line Pump With, 3" NPT Flanges, Series S, 1/3 HP, 115 Volts, 1 Phase, 112 GPM Maximum

    Armstrong 174037MF-113, Model S-46, Cast Iron In-Line Pump With, 3" NPT Flanges, Series S, 1/3 HP, 115 Volts, 1 Phase, 112 GPM Maximum

    Armstrong Sku: 174037MF-113
    $2,316.77
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  8. Armstrong 106284MF-132, Model S-55-1, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 115/230 Volts, 1 Phase, 121 GPM Max, Maintenance Free Design

    Armstrong 106284MF-132, Model S-55-1, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 115/230 Volts, 1 Phase, 121 GPM Max, Maintenance Free Design

    Armstrong Sku: 106284MF-132
    $2,338.71
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  9. Armstrong 106284MF-136A, Model S-55-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Maintenance Free Design

    Armstrong 106284MF-136A, Model S-55-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Maintenance Free Design

    Armstrong Sku: 106284MF-136A
    $2,338.71
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  10. Armstrong Bronze In-Line Pump

    Armstrong 106284LF-137, Model S-55-3, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Lead Free, Sleeve Bearing Design

    Armstrong Sku: 106284LF-137
    $2,618.06
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  11. Armstrong 106285MF-132, Model S-57-1, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 115/230 Volts, 1 Phase, 139 GPM Max, Maintenance Free Design

    Armstrong 106285MF-132, Model S-57-1, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 115/230 Volts, 1 Phase, 139 GPM Max, Maintenance Free Design

    Armstrong Sku: 106285MF-132
    $2,780.00
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  12. Armstrong 106285MF-136A, Model S-57-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 208-230/460 Volts, 3 Phase, 139 GPM Max, Maintenance Free Design

    Armstrong 106285MF-136A, Model S-57-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 208-230/460 Volts, 3 Phase, 139 GPM Max, Maintenance Free Design

    Armstrong Sku: 106285MF-136A
    $2,780.00
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  13. Armstrong 174036MF-143, Model S-45, Bronze In-Line Pump Without Flanges, Series S, 1/4 HP, 115 Volts, 1 Phase, 109 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 174036MF-143, Model S-45, Bronze In-Line Pump Without Flanges, Series S, 1/4 HP, 115 Volts, 1 Phase, 109 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 174036MF-143
    $3,084.52
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  14. Armstrong Cast Iron In-Line Pump

    Armstrong 116531-132, Model S-69-1, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1 HP, 115/230 Volts, 1 Phase, 160 GPM Max, 34 ft Max Head, Sleeve Bearing Design

    Armstrong Sku: 116531-132
    $3,905.81
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  15. Armstrong Cast Iron In-Line Pump

    Armstrong 116535-136A, Model S-69-3, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1 HP, 208-230/460 Volts, 3 Phase, 160 GPM Max, 34 ft Max Head, Sleeve Bearing Design

    Armstrong Sku: 116535-136A
    $3,905.81
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  16. Armstrong Bronze In-Line Pump

    Armstrong 116536LF-137, Model S-69-3, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1 HP, 208-230/460 Volts, 3 Phase, 160 GPM Max, 34 ft Max Head, Lead Free, Sleeve Bearing Design

    Armstrong Sku: 116536LF-137
    $4,170.97
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  17. Armstrong 106284MF-133, Model S-55-1, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 115/230 Volts, 1 Phase, 121 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 106284MF-133, Model S-55-1, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 115/230 Volts, 1 Phase, 121 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 106284MF-133
    $4,318.71
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  18. Armstrong 106284MF-137A, Model S-55-3, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 106284MF-137A, Model S-55-3, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/2 HP, 208-230/460 Volts, 3 Phase, 121 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 106284MF-137A
    $4,318.71
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  19. Armstrong Bronze In-Line Pump

    Armstrong 174037MF-143, Model S-46, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1/3 HP, 115 Volts, 1 Phase, 112 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 174037MF-143
    $4,361.29
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  20. Armstrong 106285MF-133, Model S-57-1, Bronze In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 115/230 Volts, 1 Phase, 139 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 106285MF-133, Model S-57-1, Bronze In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 115/230 Volts, 1 Phase, 139 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 106285MF-133
    $4,744.52
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    Available For Order! ((Usually Ships 3-5 Days))This product is direct shipped from the manufacturer to our distribution center where it is checked, packaged and processed by our quality control team. The shipping time shown is the estimated number of business days the product will ship out from our wa     Call Sales Counter !
  21. Armstrong 106285MF-137A, Model S-57-3, Bronze In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 208-230/460 Volts, 3 Phase, 139 GPM Max, Lead Free, Maintenance Free Design

    Armstrong 106285MF-137A, Model S-57-3, Bronze In-Line Pump With 3" NPT Flanges, Series S, 3/4 HP, 208-230/460 Volts, 3 Phase, 139 GPM Max, Lead Free, Maintenance Free Design

    Armstrong Sku: 106285MF-137A
    $4,744.52
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
  22. Armstrong Bronze In-Line Pump

    Armstrong 116532LF-133, Model S-69-1, Bronze In-Line Pump With 3" NPT Flanges, Series S, 1 HP, 115/230 Volts, 1 Phase, 160 GPM Max, 34 ft Max Head, Lead Free, Sleeve Bearing Design

    Armstrong Sku: 116532LF-133
    $7,022.58
    info
    FREE SHIPPING ON THIS ITEM ! Offer applies to the lower 48 states and excludes Alaska, Hawaii, APO/FPO and international orders. Free standard shipping applies to U.S. orders only and to select items that meet UPS Standard Ground container/cube requirements. Free Shipping
    In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.     Call Sales Counter !
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