{"product_id":"taco-3450-t2-1-2inch-union-combination-pressure-regulating-boiler-feed-backflow-valve","title":"Taco 3450-T2 1\/2inch Union Combination Pressure Regulating Boiler Feed \u0026 Backflow Valve","description":"\u003cp\u003eThe Taco 3450-T2 is a 1\/2-inch union combination valve engineered for hydronic heating systems. This dual-function unit integrates pressure regulation and backflow prevention in a single compact assembly, reducing installation complexity and footprint requirements. Designed for boiler feed applications, the valve maintains system pressure within optimal operating parameters while the integral backflow preventer protects potable water supplies from contamination. The union connection allows straightforward installation and service access without disrupting adjacent piping. Ideal for residential and light commercial heating systems where code-compliant backflow protection and pressure control are essential. Meets industry standards for both pressure regulation and backflow prevention performance.\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":44160788725825,"sku":"1770253","price":130.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/8813\/0881\/files\/Screenshot2026-07-09150623.png?v=1783624016","url":"https:\/\/www.plumbingplanet.com\/products\/taco-3450-t2-1-2inch-union-combination-pressure-regulating-boiler-feed-backflow-valve","provider":"Plumbing Planet","version":"1.0","type":"link"}