{"product_id":"armstrong-516837-301-fsa-1-1-2-flo-trex-valve-straight-angle","title":"Armstrong 516837-301 FSA 1-1\/2\" Flo-Trex Valve Straight Angle","description":"\u003cp\u003eOptimizing the efficiency and longevity of your hydronic system begins with effective discharge control, a task perfectly suited for the \u003cstrong\u003e516837-301\u003c\/strong\u003e Armstrong Flo-Trex valve. Designed for installation on the discharge side of pumping equipment, this \u003cstrong\u003eFSA 1-1\/2\"\u003c\/strong\u003e model safeguards your pumps from backflow damage while maintaining optimal system pressure. By consolidating multiple functions into a compact, straight-angle configuration, it streamlines piping requirements and minimizes maintenance complexity.\u003c\/p\u003e\u003cp\u003eThe Flo-Trex valve functions as a high-performance, four-in-one solution that integrates a shut-off valve, a non-slam check valve, a flow-throttling valve, and a 90-degree elbow into a single body. This innovative design eliminates the need for individual components, significantly reducing pressure drop and space requirements in crowded mechanical rooms. Its specialized disc design prevents fluid hammer, ensuring smooth operation during pump startup and shutdown cycles.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Protection:\u003c\/strong\u003e Prevents reverse flow and protects seals from hydraulic shock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpace Efficiency:\u003c\/strong\u003e Combines four distinct mechanical functions into one compact unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Throttling:\u003c\/strong\u003e Allows for accurate flow adjustment to meet system-specific hydronic demands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Engineered to withstand the rigorous demands of commercial HVAC discharge piping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial HVAC circulation systems, large-scale chilled and hot water applications, and industrial fluid processing setups where pump longevity and space-saving integration are critical requirements.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43129882869854,"sku":"516837-301","price":847.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/516837_301_image_25d0582d-f3ec-4e23-9242-c88e14f01cab.png?v=1786086291","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-516837-301-fsa-1-1-2-flo-trex-valve-straight-angle","provider":"National Boiler Supply","version":"1.0","type":"link"}