{"product_id":"armstrong-410135-240-circulating-pump-707s-bronze-impeller-commercial-duty","title":"Armstrong 410135-240 Circulating Pump | 707S Bronze Impeller | Commercial Duty","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eBuilt for demanding commercial and industrial applications, the Armstrong 410135-240 circulating pump delivers robust performance and exceptional durability. This heavy-duty circulator features a bronze impeller and rugged construction designed to handle continuous operation in large-scale HVAC systems, industrial processes, and commercial plumbing applications. Its proven design ensures reliable fluid movement where system failure is not an option.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eThe pump combines efficient hydraulic performance with service-friendly features, including a removable end cover and replaceable mechanical seal. The bronze impeller provides superior corrosion resistance compared to standard materials, extending service life in challenging water conditions. With its balanced design and heavy-duty motor, this circulator operates quietly while moving significant water volumes in multi-story buildings, manufacturing facilities, and institutional campuses. For system design guidance, read our blog on \u003cstrong\u003e[Selecting Commercial Circulating Pumps for Large-Scale Applications]\u003c\/strong\u003e.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eAs part of Armstrong’s respected 707S series, this pump continues a legacy of industrial-grade performance that mechanical engineers and facility managers have trusted for decades. Whether maintaining critical process temperatures or ensuring consistent water circulation in a high-rise building, the 410135-240 provides the reliability needed for 24\/7 operation. Learn about its role in modern building systems in our article \u003cstrong\u003e[The Critical Role of Circulating Pumps in Commercial HVAC Efficiency]\u003c\/strong\u003e.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e \u003cdiv class=\"ds-scroll-area _1210dd7\"\u003e \u003cdiv class=\"ds-scroll-area__gutters\"\u003e \u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003c\/div\u003e \u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eSpecification\u003c\/th\u003e \u003cth\u003eDetails\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eArmstrong 410135-240 (707S Series)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMotor Power\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1\/2 HP (0.37 kW)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConnection Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1-1\/4″ FIPT x 1-1\/4″ FIPT\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eImpeller Material\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eBronze\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eCast Iron\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMax Head\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e28 ft (8.5 m)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMax Flow\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e85 US gpm (322 L\/min)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSpeed Settings\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSingle Speed\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMax Operating Pressure\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e125 psi (8.6 bar)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMax Fluid Temperature\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e230°F (110°C)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e115V, 1-Phase\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eShaft Seal\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eReplaceable Mechanical Seal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003ePSC (Permanent Split Capacitor)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003chr\u003e \u003ch3\u003e\u003cstrong\u003eComparison Table: Armstrong 707S vs. Alternative Commercial Pumps\u003c\/strong\u003e\u003c\/h3\u003e \u003cdiv class=\"ds-scroll-area _1210dd7\"\u003e \u003cdiv class=\"ds-scroll-area__gutters\"\u003e \u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e \u003cdiv class=\"ds-scroll-area__horizontal-bar\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eFeature\u003c\/th\u003e \u003cth\u003eArmstrong 410135-240\u003c\/th\u003e \u003cth\u003eCompetitor A (Light Commercial)\u003c\/th\u003e \u003cth\u003eCompetitor B (Industrial Grade)\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eHeavy-Duty Cast Iron\/Bronze\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eLightweight Construction\u003c\/td\u003e \u003ctd\u003eIndustrial Cast Iron\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eServiceability\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eExcellent (Removable End Cover)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eLimited Service Access\u003c\/td\u003e \u003ctd\u003eFull Service Access\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eImpeller Material\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eBronze (Corrosion Resistant)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eComposite or Cast Iron\u003c\/td\u003e \u003ctd\u003eBronze or Stainless Steel\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eApplication Range\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eCommercial HVAC \u0026amp; Plumbing\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eResidential\/Light Commercial\u003c\/td\u003e \u003ctd\u003eHeavy Industrial\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePrice Point\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eMid-Range Commercial\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eEconomy\u003c\/td\u003e \u003ctd\u003ePremium\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMotor Quality\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eCommercial Duty PSC\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eStandard Residential\u003c\/td\u003e \u003ctd\u003eIndustrial TEFC\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003chr\u003e \u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQs)\u003c\/strong\u003e\u003c\/h3\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ1: What applications is this pump best suited for?\u003c\/strong\u003e\u003cbr\u003e The 410135-240 excels in commercial building HVAC systems, industrial process circulation, large domestic water recirculation systems, and institutional applications like schools and hospitals where reliable, continuous operation is essential.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ2: What maintenance does this commercial circulator require?\u003c\/strong\u003e\u003cbr\u003e Routine maintenance includes periodic inspection of the mechanical seal for leaks, motor bearing lubrication (if specified), and ensuring the pump operates within its performance curve. The removable end cover simplifies seal replacement when needed.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ3: Can this pump handle both heating and chilled water applications?\u003c\/strong\u003e\u003cbr\u003e Yes, the pump is designed for closed-loop hydronic systems operating with water or glycol solutions within its published temperature and pressure ratings. It performs effectively in both heating systems up to 230°F and chilled water systems.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ4: Is the bronze impeller suitable for potable water applications?\u003c\/strong\u003e\u003cbr\u003e While the bronze impeller provides good corrosion resistance, the cast iron housing makes this pump unsuitable for potable water systems. For domestic water applications, consider Armstrong’s \u003cstrong\u003e[All-Bronze Circulator Series]\u003c\/strong\u003e with completely bronze wetted parts.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ5: What is the expected service life of this pump?\u003c\/strong\u003e\u003cbr\u003e With proper installation and maintenance, the 410135-240 typically provides 15-20 years of reliable service in commercial applications. The bronze impeller significantly extends service life compared to all-cast iron designs in corrosive water conditions.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003e\u003cstrong\u003ePros and Cons\u003c\/strong\u003e\u003c\/h3\u003e \u003cdiv class=\"ds-scroll-area _1210dd7\"\u003e \u003cdiv class=\"ds-scroll-area__gutters\"\u003e \u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e \u003cdiv class=\"ds-scroll-area__horizontal-bar\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003ePros\u003c\/th\u003e \u003cth\u003eCons\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\n\u003cstrong\u003eDurable Construction\u003c\/strong\u003e with commercial-grade components\u003c\/td\u003e \u003ctd\u003e\n\u003cstrong\u003eCast Iron Housing\u003c\/strong\u003e limits potable water use\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\n\u003cstrong\u003eBronze Impeller\u003c\/strong\u003e for enhanced corrosion resistance\u003c\/td\u003e \u003ctd\u003e\n\u003cstrong\u003eSingle-Speed Operation\u003c\/strong\u003e limits energy efficiency\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\n\u003cstrong\u003eEasy Serviceability\u003c\/strong\u003e with removable end cover\u003c\/td\u003e \u003ctd\u003e\n\u003cstrong\u003eHeavier Weight\u003c\/strong\u003e requires proper pipe support\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\n\u003cstrong\u003eProven Reliability\u003c\/strong\u003e in commercial applications\u003c\/td\u003e \u003ctd\u003e\n\u003cstrong\u003ePeriodic Maintenance\u003c\/strong\u003e required (seal inspection)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\n\u003cstrong\u003eQuiet Operation\u003c\/strong\u003e with balanced rotating assembly\u003c\/td\u003e \u003ctd\u003e\n\u003cstrong\u003eNot Self-Priming\u003c\/strong\u003e – requires flooded suction\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\n\u003cstrong\u003eWide Availability\u003c\/strong\u003e of replacement parts\u003c\/td\u003e \u003ctd\u003e\n\u003cstrong\u003eStandard Efficiency\u003c\/strong\u003e vs. modern ECM pumps\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003chr\u003e \u003ch3\u003e\u003cstrong\u003eConclusion \u0026amp; Ideal Use Cases\u003c\/strong\u003e\u003c\/h3\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eThe Armstrong 410135-240 circulating pump represents the workhorse standard for commercial hydronic systems where reliability, serviceability, and long-term performance outweigh the need for advanced features like variable speed control. Its balanced design and quality construction make it a cost-effective choice for many commercial and industrial applications.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eThis pump is ideally specified for:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eCommercial HVAC Systems:\u003c\/strong\u003e Secondary loop circulation in office buildings and retail spaces\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eIndustrial Processes:\u003c\/strong\u003e Cooling tower circulation, process temperature control\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eInstitutional Buildings:\u003c\/strong\u003e School, hospital, and government facility hydronic systems\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eLarge Residential Buildings:\u003c\/strong\u003e Apartment and condominium heating system circulation\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eFor applications requiring higher efficiency, consider Armstrong’s \u003cstrong\u003e[ECM High-Efficiency Circulator Series]\u003c\/strong\u003e, while for potable water systems, the \u003cstrong\u003e[Armstrong All-Bronze Circulator Line]\u003c\/strong\u003e is the appropriate choice. The 410135-240 fills an important niche for standard-efficiency commercial applications where proven reliability and easy maintenance are paramount. For performance data and installation guidelines, consult the \u003cstrong\u003eArmstrong Product Engineering Manual\u003c\/strong\u003e (External Link).\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eContact our commercial pump specialists today for application assistance, performance curve analysis, and competitive pricing on this reliable workhorse circulator.\u003c\/strong\u003e\u003c\/p\u003e","brand":"TITANPARTHUB","offers":[{"title":"Default Title","offer_id":52160964264167,"sku":null,"price":1554.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/7806\/3335\/files\/7ec09bef-armstrong_4270_motor_mounted_pumps__87815.webp?v=1780566424","url":"https:\/\/titanparthub.com\/products\/armstrong-410135-240-circulating-pump-707s-bronze-impeller-commercial-duty","provider":"TITANPARTHUB","version":"1.0","type":"link"}