Armstrong S-25 LEAD FREE Lead Free In-Line Circulator Pump - Bronze, 1/12 HP (174031LF-043)

SKU: 23001
Brand: Armstrong Model: S-25 LEAD FREE Condition: New

Armstrong S-25 LEAD FREE Circulator Pumps

Regular Price: $637.99
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About this Product

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Armstrong S-25 Lead Free Bronze In-Line Circulators are apart of the Series S. The 1/12 HP bronze circulator pump is suitable for hydronic heating and cooling, domestic water systems, mulit-stage zoning and general industrial service applications. Built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction, Armstrong Pumps Series S Circulators are a trusted, durable product that have been used by HVAC professionals for decades. Note: Flanges sold separately.

Comparable to B&G Series 100 AB, and Taco #110.


• Lead Free
• Standard three-piece design
• Radially-split body: Can be left in-line while servicing pump, eliminating disconnecting of pipes
• Oversized shaft: Made from special alloy steel
• Centrifugal impeller: Ensures maximum water delivery in the HVAC system
• Positive mechanical seal: ARMseal construction ensures many years of noise-free, trouble-free service
• Modular construction: Unique shaft and bearing module fits for ease of serviceability and reduced inventory costs


• Model Number: S-25 Lead Free Bronze
• Item Number: 174031LF-043
• Flange Size (NPT): Less Flanges (Sold Separately)
• Horsepower: 1/12 HP
• Voltage: 115V
• Phase: 1 Phase
• Body Pump: Bronze
• Volute: Bronze
• Impeller: Non-Ferrous
• Shaft: Alloy Steel-Copper Sleeve
• Mechanical Seal Assembly: Carbon Brass Trim - Ceramic Seat
• Maximum Operating Temperature: 225° F (107° C)
• Maximum Working Pressure: 125 psi (862 kPa)
• Complies with section 116875 of the California Health and Safety Code and Vermont Act 193 (Lead Content of wetted surface is 0.25% or less.)

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