{"product_id":"beckett-spira-h24-36-flexible-spring-circulator-coupling","title":"Beckett SPIRA-H24-36 Flexible Spring Circulator Coupling","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BECKETT SPIRA-H24-36 is a flexible spring circulator coupling designed for hydronic heating systems. It connects circulator pump motors to pump assemblies using a torsionally flexible spring element that absorbs vibration and accommodates minor shaft misalignment. Compatible with 1\/2 inch by 5\/8 inch and 5\/8 inch by 5\/8 inch shaft combinations, this coupling is rated for counterclockwise (CCW) rotation and supports motors ranging from 1\/4 HP to 3\/4 HP. Licensed plumbers and HVAC technicians working on closed-loop hydronic systems are the primary installers of this part.\u003c\/p\u003e\n\u003cp\u003eThis coupling is suited for residential and light commercial hydronic heating applications where Taco 121-138 Series in-line circulators are in service. It replaces worn or damaged couplings during circulator motor swaps or pump rebuilds. The flexible spring design is a common OEM-style configuration for these circulators, making this a direct-fit service part for technicians maintaining hot water baseboard and radiant floor heating systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFlexible spring design absorbs vibration and tolerates minor shaft misalignment\u003c\/li\u003e\n  \u003cli\u003eFits 1\/2 inch by 5\/8 inch and 5\/8 inch by 5\/8 inch shaft combinations\u003c\/li\u003e\n  \u003cli\u003eRated for counterclockwise (CCW) motor rotation\u003c\/li\u003e\n  \u003cli\u003eSupports 1\/4, 1\/3, 1\/2, and 3\/4 HP circulator motors\u003c\/li\u003e\n  \u003cli\u003eOEM-style replacement for Taco 121-138 Series in-line circulators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Taco 121-138 Series in-line circulators with 1\/4, 1\/3, 1\/2, and 3\/4 HP motors. Shaft configurations supported are 1\/2 inch by 5\/8 inch and 5\/8 inch by 5\/8 inch, CCW rotation only.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber or HVAC technician. Before servicing, shut off power to the circulator at the circuit breaker and allow the system to cool to a safe handling temperature. Ensure shaft dimensions and rotation direction match the replacement coupling before assembly. Do not force the coupling onto mismatched shaft sizes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Flexible Spring Coupling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft Sizes\u003c\/strong\u003e: 1\/2 x 5\/8 inch and 5\/8 x 5\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRotation\u003c\/strong\u003e: Counterclockwise (CCW)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor HP Range\u003c\/strong\u003e: 1\/4, 1\/3, 1\/2, 3\/4 HP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: BECKETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SPIRA-H24-36\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BECKETT","offers":[{"title":"Default Title","offer_id":51383686758706,"sku":"SPIRA-H24-36","price":66.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312670494.jpg?v=1782604391","url":"https:\/\/voomisupply.com\/products\/beckett-spira-h24-36-flexible-spring-circulator-coupling","provider":"Voomi Supply","version":"1.0","type":"link"}