{"product_id":"wilkins-zw4004gss-s-2-12-fire-control-pressure-reducing-valve","title":"Wilkins ZW4004GSS-S | 2-1\/2\" Fire Control Pressure Reducing Valve","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 ZW4004GSS-S is a Pressure-Tru™ automatic fire control pressure reducing valve designed for reliable pressure regulation in automatic sprinkler and standpipe systems under both flow and no-flow conditions.\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 2 1\/2 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Inlet Pressure:\u003c\/strong\u003e 400 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Grooved AWWA C606\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupervisory Switch Rating:\u003c\/strong\u003e 3 A @ 125 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotable Certifications:\u003c\/strong\u003e UL, C-UL, NYC MEA, California Fire Marshal\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\u003eZW4004GSS-Q:\u003c\/strong\u003e Pressure setting Q\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZW4004GSS-R:\u003c\/strong\u003e Pressure setting R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZW4004GSS-T:\u003c\/strong\u003e Pressure setting T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZW4004GSS-U:\u003c\/strong\u003e Pressure setting U\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\u003eCast Bronze ASTM B 584\u003c\/li\u003e\n\u003cli\u003eBuna Nitrile (FDA approved)\u003c\/li\u003e\n\u003cli\u003eEPDM (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 ZW4004GSS-S Series Pressure Reducing Valve is listed as a floor control valve, an indicating valve, and a check valve in automatic sprinkler systems as well as a standpipe valve for CLASS I and CLASS III systems.\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;\"\u003eUL Listed; C-UL Listed; NYC MEA 325-06-E; City of Los Angeles Approved; California State Fire Marshal Listed\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\u003eFactory Set Precision:\u003c\/strong\u003e Non-field adjustable design ensures consistent pressure regulation under both flow and no-flow conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegral Supervisory Switch:\u003c\/strong\u003e Built-in listed supervisory switch with tamper resistant cover provides immediate valve position monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Monitoring Capability:\u003c\/strong\u003e Tapped and plugged inlet and outlet ports allow for easy pressure gauge installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen\/Close Indication:\u003c\/strong\u003e Built-in indicating feature provides visual confirmation of valve position for enhanced system monitoring.\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 difference between the pressure setting variants (Q, R, S, T, U)?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Each pressure setting corresponds to a specific factory-set outlet pressure profile optimized for different system requirements. Setting S (this model) provides a 250 psi maximum inlet pressure, while Q, R, T, and U provide 310, 290, 225, and 200 psi respectively.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the Wilkins ZW4004GSS-S be adjusted in the field?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the ZW4004GSS-S is factory set and non-field adjustable to ensure consistent performance and prevent unauthorized tampering in critical fire protection systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the minimum pressure differential required for proper operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A minimum of 20 psi pressure differential between inlet static pressure and outlet set static pressure is recommended to ensure a well-regulated and efficient system.\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":42983793983551,"sku":"ZW4004GSS-S","price":944.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/0985\/files\/ZW4004G_0190ceb3-bbc4-4fa2-bf44-1f45b5868d2a.png?v=1772854942","url":"https:\/\/bottlefillingstations.com\/products\/wilkins-zw4004gss-s-2-12-fire-control-pressure-reducing-valve","provider":"BottleFillingStations.com","version":"1.0","type":"link"}