{"product_id":"wilkins-4-zw209bp-pilot-operated-prv-low-flow-by-pass","title":"Wilkins 4-ZW209BP | Pilot Operated PRV, Low Flow By-Pass","description":"\u003cp\u003e\u003cstrong\u003eNOTICE:\u003c\/strong\u003e\u003cem\u003e Product images may vary from the actual item due to differences in size or configuration options.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe Wilkins 4-ZW209BP is a pilot-operated pressure reducing valve with integrated low-flow bypass, designed to reduce high inlet pressures to stable outlet pressures in commercial and municipal applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eKey Specifications:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating:\u003c\/strong\u003e ANSI Class 150, 250 psi max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 33°F to 140°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotable Certifications:\u003c\/strong\u003e NSF\/ANSI\/CAN 61; ANSI\/AWWA C530\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e ANSI Class 150 Flanges\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eOther Related Variants:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e112-ZW209BP:\u003c\/strong\u003e 1 1\/2 Inches version\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-ZW209BP:\u003c\/strong\u003e 2 Inches version\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e212-ZW209BP:\u003c\/strong\u003e 2 1\/2 Inches version\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-ZW209BP:\u003c\/strong\u003e 3 Inches version\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eMaterials:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDuctile Iron Body (ASTM A536)\u003c\/li\u003e\n\u003cli\u003eDuctile Iron Bonnet (ASTM A536)\u003c\/li\u003e\n\u003cli\u003eStainless Steel Disc Guide\u003c\/li\u003e\n\u003cli\u003eStainless Steel Seat\u003c\/li\u003e\n\u003cli\u003eStainless Steel Stem\u003c\/li\u003e\n\u003cli\u003eStainless Steel Spring\u003c\/li\u003e\n\u003cli\u003eBuna-N Rubber Disc\u003c\/li\u003e\n\u003cli\u003eNylon Reinforced Buna-N Diaphragm\u003c\/li\u003e\n\u003cli\u003eCopper Tubing\u003c\/li\u003e\n\u003cli\u003eBrass Fittings\u003c\/li\u003e\n\u003cli\u003eBlue Epoxy Coating (FDA Approved)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Installation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003eThe Zurn 4-ZW209BP is commonly used in buildings where 1-15 GPM low flows are common during off-peak usage. Ideal for applications requiring reduction of high inlet pressures to safe and stable outlet pressure in commercial buildings, municipal water systems, and industrial facilities. Recommended installation orientation is horizontal with valve cover up.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eStandards Compliance:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"background: #f8f9fb; border-left: 4px solid #1d85af; padding: 12px 14px; margin: 0; line-height: 1.7; color: #333;\"\u003eANSI\/AWWA C530; NSF\/ANSI\/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT); FDA Approved Epoxy Coating\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cu\u003eFeatures \u0026amp; Benefits:\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Low-Flow Bypass:\u003c\/strong\u003e Handles flows up to 10 GPM (1\/2\" PRXL on sizes 1 1\/4\"-3\", 3\/4\" NR3XL-BP on 4\") during off-peak demand without requiring main valve operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Installation Package:\u003c\/strong\u003e Includes wye strainer, isolation valves, inlet\/outlet pressure gauges, and all necessary fittings for quick installation and easy maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Protection:\u003c\/strong\u003e Blue epoxy coating on all internal and external ferrous surfaces provides superior corrosion resistance and extends valve lifespan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Pressure Control:\u003c\/strong\u003e Field adjustable pilot spring range of 15-120 psi ensures constant downstream pressure with responsive modulation between open and closed positions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the minimum inlet pressure required for the Wilkins 4-ZW209BP?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The minimum inlet pressure is 10 psi higher than the set point or the additional body friction loss at intended flow, whichever is higher.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the flow capacity range for the 4-ZW209BP?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The main valve handles 50-800 GPM continuous (up to 1000 GPM intermittent), while the integrated low-flow bypass handles 1-20 GPM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the Zurn 4-ZW209BP be installed vertically?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the recommended installation orientation is horizontal with the valve cover up. Vertical installation is not recommended due to difficulty in properly bleeding air and performing maintenance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"W3TucRPBpqQA9ARvwg6ni-content\"\u003e\n\u003cp\u003e\u003cspan\u003e \u003cstrong\u003eNOTICE:\u003c\/strong\u003e Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system. \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003ci\u003e \"Hydrate Everyone, Everywhere!\" BottleFillingStations.com | \u003ca rel=\"noopener\" href=\"https:\/\/bottlefillingstations.com\/pages\/contact-us\" target=\"_blank\"\u003e Contact us \u003c\/a\u003e \u003c\/i\u003e\u003c\/p\u003e","brand":"Zurn Wilkins","offers":[{"title":"Default Title","offer_id":42983791034431,"sku":"4-ZW209BP","price":7282.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/ZW209BP_AL_ec60663f-e1dc-408d-8aa5-b56d992eabc5.png?v=1772854770","url":"https:\/\/bottlefillingstations.com\/products\/wilkins-4-zw209bp-pilot-operated-prv-low-flow-by-pass","provider":"BottleFillingStations.com","version":"1.0","type":"link"}