{"product_id":"wilkins-34-350ft-double-check-valve-assembly-model-350-ft-3-4-in-bronze","title":"Zurn  Wilkins Model 350 Double-Check Valve Assembly, 3\/4 in Bronze - 34-350FT","description":"\u003ch2\u003eZurn  Wilkins Model 350 Double-Check Valve Assembly, 3\/4 in Bronze - 34-350FT\u003c\/h2\u003e\n\u003cp\u003eThe Wilkins Model 350 double-check valve assembly is a durable, serviceable backflow preventer designed for potable water protection where a low health hazard exists. Built with bronze bodies for 3\/4\" sizes and reinforced nylon housings for internal components, the 350 balances corrosion resistance with easy maintenance. It features full-port ball shutoff valves, top-mounted test cocks, and an EZSwap removable pressure vessel that reduces repair time and simplifies winterization and flushing.\u003c\/p\u003e\n\u003cp\u003eIdeal for irrigation and commercial plumbing where reliable backflow protection is required without a high health hazard, the Model 350 provides proven double-check protection with parts and repair kits widely available. Follow manufacturer installation and local code requirements for mounting height, drainage, and periodic testing; use the included technical specs and installation instructions for service intervals and replacement parts.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable construction:\u003c\/strong\u003e Cast bronze main valve body (3\/4\" and 1\") with stainless steel fasteners for corrosion resistance and long field life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceable design:\u003c\/strong\u003e Removable EZSwap pressure vessel permits safe line flushing, quick winterization, and fast on-site repairs without removing the assembly from the line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast-test capability:\u003c\/strong\u003e Top-mounted SAE test cocks and full-port ball valves allow efficient testing and shutoff during service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance ratings:\u003c\/strong\u003e Typical ratings include 175 PSI maximum working pressure and 350 PSI hydrostatic test pressure; temperature range supports common potable water applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e ASSE Listed 1015 and recognized by IAPMO and CSA (B64.5); designed to meet federal low-lead guidelines for potable water installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e Compact footprint for 3\/4\" service, optional strainers and accessory kits available to simplify connection and protection on new or retrofit systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eReliable \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3\/4\" double-check valve assembly (DCVA)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e designed for non-health hazard backflow prevention in potable water systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDurable \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebronze body construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ensures long-term corrosion resistance and field durability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCompact design makes it ideal for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eresidential and light commercial plumbing applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eProvides effective protection against \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebackpressure and back-siphonage conditions\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eIncludes \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etop-access test cocks and resilient seated check modules\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for easier testing and maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eEngineered for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow head loss performance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, helping maintain system efficiency.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSuitable for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eirrigation, fire sprinkler, and domestic water systems where code requires backflow protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBuilt to meet \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eindustry standards for safety, reliability, and regulatory compliance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eA trusted choice for installers seeking a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eserviceable, long-lasting backflow prevention solution\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"0\" data-end=\"319\"\u003e\u003cstrong data-start=\"0\" data-end=\"86\"\u003eQ: What is the Zurn Wilkins Model 350 3\/4\" Double Check Valve Assembly (34-350FT)?\u003c\/strong\u003e\u003cbr data-start=\"86\" data-end=\"89\"\u003eA: A 3\/4\" bronze double check valve assembly designed to prevent backflow of contaminated water into potable water systems in low-hazard applications like irrigation and commercial plumbing. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"321\" data-end=\"548\"\u003e\u003cstrong data-start=\"321\" data-end=\"364\"\u003eQ: Where is the 34-350FT commonly used?\u003c\/strong\u003e\u003cbr data-start=\"364\" data-end=\"367\"\u003eA: Ideal for irrigation systems, fire sprinkler lines, and non-potable or low-health-hazard water applications requiring backflow protection. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"550\" data-end=\"799\"\u003e\u003cstrong data-start=\"550\" data-end=\"583\"\u003eQ: What are its key features?\u003c\/strong\u003e\u003cbr data-start=\"583\" data-end=\"586\"\u003eA: Bronze body construction, full-port shutoff ball valves, top-mounted test cocks, and EZSwap removable pressure vessel for easier maintenance, flushing, and winterization. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"801\" data-end=\"1032\"\u003e\u003cstrong data-start=\"801\" data-end=\"844\"\u003eQ: What makes the EZSwap design useful?\u003c\/strong\u003e\u003cbr data-start=\"844\" data-end=\"847\"\u003eA: It allows quick removal and replacement of the internal pressure vessel for off-line servicing, reducing downtime and simplifying maintenance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1034\" data-end=\"1249\"\u003e\u003cstrong data-start=\"1034\" data-end=\"1079\"\u003eQ: What are the operating specifications?\u003c\/strong\u003e\u003cbr data-start=\"1079\" data-end=\"1082\"\u003eA: Typically rated around 175 PSI working pressure and up to 350 PSI hydrostatic test pressure, with threaded FNPT connections. \u003cspan class=\"\" data-state=\"delayed-open\" aria-describedby=\"radix-_r_50_\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInspect regularly for leaks, corrosion, and external damage.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTest annually to ensure proper backflow prevention performance and code compliance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFlush the system periodically to remove sediment and debris buildup.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClean or replace internal check components if sticking or reduced flow is observed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplace worn seals, gaskets, or O-rings with compatible repair kits as needed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep the assembly accessible and protected from freezing conditions for reliable operation.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zurn","offers":[{"title":"Default Title","offer_id":45805517078719,"sku":"34-350FT","price":336.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/Wilkins-34-350FT.png?v=1782958481","url":"https:\/\/www.mybackyardzone.com\/products\/wilkins-34-350ft-double-check-valve-assembly-model-350-ft-3-4-in-bronze","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}