{"product_id":"caleffi-535061ha-1-5-inch","title":"Caleffi 5350 Series 1-Inch NPT Adjustable Pressure Reducing Valve - 1.5 Inch","description":"\u003cp\u003eThe \u003cstrong\u003eCaleffi 5350 Series Prescal\u003c\/strong\u003e is a commercial-grade, high-performance adjustable pressure reducing valve engineered to control and stabilize high incoming pressures from public water mains. Designed to protect downstream infrastructure from thermal stress, pipe hammering, and appliance degradation, this premium PRV provides whisper-quiet performance across municipal, institutional, and high-volume commercial plumbing networks.\u003c\/p\u003e\n\n\u003ch3\u003eIntelligent Pre-Adjustment \u0026amp; Visual Scale\u003c\/h3\u003e\n\u003cp\u003eThe 5350 Series features Caleffi's signature top-mounted operating knob integrated with an explicit, double-sided pressure setting indicator scale. This mechanical configuration allows mechanical contractors to pre-set the precise desired downstream pressure target completely prior to installing the unit into the pipe lines. Once fluid pressure enters the valve, the internal balanced seat architecture continuously counters upstream pressure fluctuations, holding the downstream environment completely steady.\u003c\/p\u003e\n\n\u003ch3\u003eAdvanced Serviceability Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemovable Self-Contained Unit Cartridge:\u003c\/strong\u003e Complete inspection, mesh cleaning, and internal maintenance cycles can be completed in seconds by extracting the complete top-loaded core cartridge without cutting the valve housing from the piping layout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDezincification-Resistant low-lead Construction:\u003c\/strong\u003e Cast from a specialized robust brass compound specifically formulated to limit scaling, maximize structural longevity, and handle hard or highly aggressive hot water loops flawlessly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContoured Internal Control Diaphragm:\u003c\/strong\u003e Built with a specialized custom-shaped rubber profile that maximizes regulation accuracy while dampening vibration and resisting severe pressure surges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eLooking for exact pressure drop curves or localized union dimensional metrics? \u003ca href=\"\/pages\/contact-us\" title=\"Request Official Caleffi Submittal\"\u003eClick here to request the official factory submittal manuals from our engineering desk.\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"1\"","offer_id":42928612147294,"sku":"535060A","price":285.0,"currency_code":"USD","in_stock":true},{"title":"1.5 Inch","offer_id":42928612180062,"sku":"535080A","price":585.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Caleffi_5350_Prescal_series_adjustable_pressure_reducing_valve_with_heavy_low-lead_brass_body_integrated_mechanical_pressure_gauge_and_premium_polymer_control_knob..jpg?v=1782048308","url":"https:\/\/nationalboilersupply.com\/products\/caleffi-535061ha-1-5-inch","provider":"National Boiler Supply","version":"1.0","type":"link"}