{"product_id":"watts-lfn45b-m1-3-4-lead-free-water-pressure-reducing-valve","title":"Watts LFN45B-M1 3\/4\" Lead Free Water Pressure Reducing Valve","description":"\u003cdiv class=\"product-description-wrapper\" style=\"font-family: sans-serif; line-height: 1.6; color: #333; margin-bottom: 25px;\"\u003e\n  \u003cp style=\"margin-bottom: 16px;\"\u003e\n    The Watts LFN45B-M1 is a high-capacity, Lead Free* water pressure reducing valve designed for commercial, institutional, and residential potable water applications[cite: 2]. Constructed with a heavy-duty Lead Free copper silicon alloy body, this inline regulator protects downstream plumbing systems from high incoming supply pressures up to 400 PSI, reducing system strain, controlling pressure spikes, and lowering overall water consumption[cite: 2]. It serves as a direct modern replacement valve for legacy water pressure regulators across commercial facilities[cite: 2].\n  \u003c\/p\u003e\n\n  \u003cp style=\"margin-bottom: 12px;\"\u003e\u003cstrong style=\"font-size: 15px; color: #111;\"\u003eKey Performance \u0026amp; Construction Features:\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003cul style=\"margin-top: 0; margin-bottom: 20px; padding-left: 20px;\"\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e\n      \u003cstrong\u003eLead Free Copper Silicon Alloy Body:\u003c\/strong\u003e Engineered to comply with strict state and national low-lead plumbing requirements for potable water service[cite: 2].\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e\n      \u003cstrong\u003eIntegral Stainless Steel Strainer:\u003c\/strong\u003e Includes an integrated internal stainless strainer screen that catches line scale and debris before it can damage internal valve seating components[cite: 2].\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e\n      \u003cstrong\u003eThermal Expansion Bypass:\u003c\/strong\u003e Features a built-in bypass mechanism that safely permits thermal expansion pressure on the outlet side to bleed back into the supply main[cite: 2].\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e\n      \u003cstrong\u003eSealed Spring Cage Design:\u003c\/strong\u003e Built with an encapsulated spring housing engineered for both interior mechanical room setups and accessible outdoor or pit environments[cite: 2].\n    \u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e\n      \u003cstrong\u003eIn-Line Servicing:\u003c\/strong\u003e The complete internal module—including the seat, cage, and diaphragm—is fully accessible and serviceable directly in-line without un-sweating or removing the valve body from the pipe layout[cite: 2].\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp style=\"margin-top: 16px; margin-bottom: 0;\"\u003e\n    \u003cstrong\u003eInstallation Tip:\u003c\/strong\u003e Install near the building main service entrance where supply pressure exceeds 60 PSI[cite: 2]. Always isolate upstream supply and bleed downstream line pressure completely before installation.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":43034461896798,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Watts_LFN45B-M1_3_4_inch_Lead_Free_water_pressure_reducing_regulator_valve_with_union_connection.png?v=1784561902","url":"https:\/\/nationalboilersupply.com\/products\/watts-lfn45b-m1-3-4-lead-free-water-pressure-reducing-valve","provider":"National Boiler Supply","version":"1.0","type":"link"}