{"product_id":"taco-1911e1e1-1-2hp-cast-iron-circulator-pump-1-1-2-flanged-specs-review","title":"Taco 1911E1E1 1\/2HP Cast Iron Circulator Pump | 1-1\/2″ Flanged | Specs \u0026 Review","description":"\u003ch1\u003e\u003cstrong\u003eTaco 1911E1E1 1\/2HP Cast Iron Circulator Pump | Ultimate Product Guide\u003c\/strong\u003e\u003c\/h1\u003e \u003ch2\u003e\u003c\/h2\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eThe Taco 1911E1E1 is a robust and reliable close-coupled, in-line centrifugal pump from the trusted Taco 1900 Series. Built for demanding applications, this \u003cstrong\u003eTaco 1911E1E1\u003c\/strong\u003e model is engineered to move high volumes of water in commercial and industrial hydronic systems, including heating, cooling, and process water loops. Its heavy-duty cast iron construction and powerful 1\/2 HP, 1760 RPM motor are designed for continuous duty and long service life.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eFeaturing versatile 1-1\/2″ flanged connections for a secure, leak-free fit and a multi-voltage motor (115\/208-230V), this pump offers flexibility for a wide range of installation scenarios. It embodies Taco’s legacy of quality, providing a workhorse solution for system designers and contractors who prioritize durability and proven performance.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h2\u003e \u003cdiv class=\"markdown-table-wrapper\"\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eFeature\u003c\/th\u003e \u003cth\u003eSpecification\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1911E1E1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1900 Series\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePump Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eClose-Coupled, In-Line Centrifugal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eHorsepower (HP)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1\/2 HP\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eODP (Open Drip Proof)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePhase\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSingle Phase\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSpeed (RPM)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1760 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e115V \/ 208-230V (Multi-Tap)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e60 Hz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eFlanged\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConnection Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1-1\/2″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eCast Iron\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSeal Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eMechanical Seal\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003ch3\u003e\u003cstrong\u003ePerformance Range (Typical for 1900 Series)\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eFlow Range:\u003c\/strong\u003e Up to 250 GPM\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eHead Capabilities:\u003c\/strong\u003e Up to 160 ft.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eMax. Pressure:\u003c\/strong\u003e 125 PSI\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eMax. Temperature:\u003c\/strong\u003e 230° F (110° C)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTaco 1911E1E1 vs. Other Pump Types: Comparison Table\u003c\/strong\u003e\u003c\/h2\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eUnderstanding where this industrial-grade pump fits in the market is key.\u003c\/p\u003e \u003cdiv class=\"markdown-table-wrapper\"\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eFeature\u003c\/th\u003e \u003cth\u003eTaco 1911E1E1 (Cast Iron)\u003c\/th\u003e \u003cth\u003eResidential ECM Pump (e.g., Taco 00e)\u003c\/th\u003e \u003cth\u003eBronze Booster Pump\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePrimary Use\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eCommercial\/Industrial Hydronics\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eResidential Hydronics \u0026amp; DHW\u003c\/td\u003e \u003ctd\u003eDomestic Water Pressure Boosting\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eHeavy-Duty Cast Iron\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eBronze\/Composite\u003c\/td\u003e \u003ctd\u003eBronze\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003e1\/2 HP ODP (Powerful)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSmall ECM (Efficient)\u003c\/td\u003e \u003ctd\u003eSmall PSC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eStandard Efficiency\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eVery High Efficiency\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eStandard Efficiency\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDurability\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eExcellent for harsh systems\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eExcellent for clean systems\u003c\/td\u003e \u003ctd\u003eGood for clean water\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePotable Water Safe\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eNo (Can rust water)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eYes\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eYes\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eNoise Level\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eModerate\u003c\/td\u003e \u003ctd\u003e\u003cstrong\u003eWhisper Quiet\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eModerate\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eInitial Cost\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eModerate\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eLow-Moderate\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h2\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ1: Is this pump suitable for drinking water?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA: No.\u003c\/strong\u003e The cast iron construction is not corrosion-resistant like bronze or stainless steel. Using it with potable (drinking) water will cause rust and discoloration. This pump is designed exclusively for \u003cstrong\u003eclosed-loop hydronic heating and cooling systems.\u003c\/strong\u003e\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ2: What does “close-coupled” mean?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e It means the pump head and motor are assembled together as a single unit onto a common shaft. This design is compact, mechanically simple, and easier to align compared to frame-mounted pumps.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ3: What is an ODP motor?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e ODP stands for Open Drip Proof. It means the motor is designed so that liquid dripping from above at a 15-degree angle cannot enter the motor interior. It is a common and reliable motor type for indoor industrial applications but is not waterproof or dust-tight.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ4: How do I wire the motor for different voltages?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e The motor is multi-voltage. The connection diagram on the motor’s nameplate will provide specific instructions for wiring it for either 115V or 208-230V operation. \u003cstrong\u003eAlways ensure the power supply matches the wiring configuration.\u003c\/strong\u003e\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ5: Is this a variable speed pump?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e No. The Taco 1911E1E1 is a fixed-speed pump operating at a constant 1760 RPM. Its flow rate is adjusted manually by balancing valves within the system, not by changing the pump’s speed.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eQ6: What maintenance does it require?\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eA:\u003c\/strong\u003e These pumps are designed for minimal maintenance. The primary service item is the mechanical seal, which may eventually need replacement if it begins to leak. Ensuring the system is clean and free of abrasives will maximize the seal and bearing life.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePros and Cons\u003c\/strong\u003e\u003c\/h2\u003e \u003ch3\u003e\u003cstrong\u003ePros:\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eIndustrial Strength:\u003c\/strong\u003e Built with heavy-duty cast iron for maximum durability in demanding environments.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eHigh Performance:\u003c\/strong\u003e Capable of moving high gallons-per-minute (GPM) against significant head pressure.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eProven Reliability:\u003c\/strong\u003e A simple, time-tested design from a legendary brand (Taco) with a long history of performance.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eInstallation Flexibility:\u003c\/strong\u003e Flanged connections provide a strong, reliable seal and are standard in commercial piping.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eVoltage Versatility:\u003c\/strong\u003e A multi-voltage motor allows installation in various electrical settings without needing a separate transformer.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eCost-Effective:\u003c\/strong\u003e Provides commercial-grade performance at a reasonable initial cost for its class.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e\u003cstrong\u003eCons:\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eNot for Potable Water:\u003c\/strong\u003e Cast iron construction prohibits use with drinking water.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eLower Efficiency:\u003c\/strong\u003e Lacks the energy-saving benefits of modern ECM motor technology, leading to higher operating costs over time.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eHeavier Weight:\u003c\/strong\u003e Cast iron construction makes it significantly heavier than composite or bronze pumps.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eFixed Speed:\u003c\/strong\u003e Cannot automatically adjust its speed to match changing system demands, which is less efficient.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eLouder Operation:\u003c\/strong\u003e Typically louder than newer, high-efficiency circulators.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eConclusion \u0026amp; Best Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eThe \u003cstrong\u003eTaco 1911E1E1\u003c\/strong\u003e is a classic workhorse designed for rugged performance and longevity. It is the go-to choice for commercial and industrial applications where brute strength and reliability are more critical than energy efficiency or quiet operation.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eYou should choose this pump if:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eYou need a pump for a \u003cstrong\u003ecommercial building’s hot water heating or chilled water cooling system\u003c\/strong\u003e.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eYou are replacing an old, cast iron circulator in an industrial setting.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eDurability and upfront cost\u003c\/strong\u003e are higher priorities than energy savings.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eThe application involves a \u003cstrong\u003eclosed-loop system with non-potable water\u003c\/strong\u003e.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp class=\"ds-markdown-paragraph\"\u003eFor engineers and contractors who value proven performance and robust construction for heavy-duty hydronic applications, the Taco 1900 Series remains a trusted and effective solution.\u003c\/p\u003e \u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e This pump is designed for closed-loop hydronic systems only. Installation must be performed by a qualified professional to ensure proper wiring, piping, and system operation. Always confirm the motor is wired for the correct supply voltage.\u003c\/p\u003e","brand":"TITANPARTHUB","offers":[{"title":"Default Title","offer_id":52160961380583,"sku":null,"price":2437.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/7806\/3335\/files\/3e626d4f-Taco-1911E1E1.jpg?v=1780566419","url":"https:\/\/titanparthub.com\/products\/taco-1911e1e1-1-2hp-cast-iron-circulator-pump-1-1-2-flanged-specs-review","provider":"TITANPARTHUB","version":"1.0","type":"link"}