{"product_id":"1-950xlt-1in-double-check-valve-assy-fnpt-x-fnpt","title":"Zurn  Wilkins 950XLT 1\" Top-Access Double-Check Valve Assembly - 1-950XLT","description":"\u003ch2\u003eZurn  Wilkins 950XLT 1\" Top-Access Double-Check Valve Assembly - 1-950XLT\u003c\/h2\u003e\n\u003cp\u003eThe Wilkins 950XLT 1\" Top-Access Double-Check Valve Assembly is a durable, serviceable backflow preventer designed for low-hazard irrigation and non-potable water applications. Its compact top-access design allows testing and maintenance while fitting inside standard meter boxes, making it ideal for below-grade installations.\u003c\/p\u003e\n\u003cp\u003eDesigned to protect potable systems from backpressure and backsiphonage, the 950XLT offers long-term reliability with replaceable internals to reduce lifecycle costs. Its compact footprint and corrosion-resistant materials make it well suited for meter box installations where easy access for annual testing is required. For complete dimensions, installation instructions and parts lists, refer to the product specification sheet included in the product documents. Routine maintenance is limited to periodic testing and replacement of worn seats or seals; use only manufacturer-approved replacement parts and follow local codes for backflow device testing and certification.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize \u0026amp; connections:\u003c\/strong\u003e 1\" FNPT x FNPT connections for standard threaded piping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust construction:\u003c\/strong\u003e Cast bronze main body and cast bronze access covers for corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal components:\u003c\/strong\u003e Stainless-steel internals and springs with replaceable seats and silicone or Buna-N seal rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating limits:\u003c\/strong\u003e Maximum working pressure 175 PSI and maximum working temperature 180°F; hydrostatic test 350 PSI.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceability:\u003c\/strong\u003e Top-access check covers and full-port ball valves simplify testing, repair, and winterization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e ASSE 1015, IAPMO, CSA and AWWA C510 listings; approved by the USC Foundation for Cross-Connection Control and Hydraulic Research.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"ihp9lb\" data-start=\"28\" data-end=\"286\"\u003e\n\u003cstrong data-start=\"30\" data-end=\"65\"\u003eReliable low-hazard protection:\u003c\/strong\u003e The \u003cstrong data-start=\"70\" data-end=\"135\" data-is-only-node=\"\"\u003eZurn Wilkins 1\" 950XLT Double Check Valve Assembly (1-950XLT)\u003c\/strong\u003e is designed to prevent \u003cstrong data-start=\"159\" data-end=\"193\"\u003ebacksiphonage and backpressure\u003c\/strong\u003e in non-health-hazard potable and irrigation systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1biv0bj\" data-start=\"287\" data-end=\"520\"\u003e\n\u003cstrong data-start=\"289\" data-end=\"323\"\u003eTop-access maintenance design:\u003c\/strong\u003e Features \u003cstrong data-start=\"333\" data-end=\"360\" data-is-only-node=\"\"\u003etop-access check covers\u003c\/strong\u003e, allowing servicing of internal components without removing the entire valve from the line—reducing downtime and labor. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"60odrw\" data-start=\"521\" data-end=\"760\"\u003e\n\u003cstrong data-start=\"523\" data-end=\"555\"\u003eBuilt for long service life:\u003c\/strong\u003e Constructed with a \u003cstrong data-start=\"575\" data-end=\"595\" data-is-only-node=\"\"\u003ecast bronze body\u003c\/strong\u003e, stainless steel springs, and corrosion-resistant internal hardware for durability in outdoor and below-grade installations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zy0ti5\" data-start=\"761\" data-end=\"983\"\u003e\n\u003cstrong data-start=\"763\" data-end=\"805\"\u003eCompact, installation-friendly layout:\u003c\/strong\u003e Designed to fit \u003cstrong data-start=\"822\" data-end=\"846\" data-is-only-node=\"\"\u003estandard valve boxes\u003c\/strong\u003e, making it ideal for residential and light commercial irrigation systems where space is limited. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e5aqxn\" data-start=\"984\" data-end=\"1167\"\u003e\n\u003cstrong data-start=\"986\" data-end=\"1012\"\u003eServiceable internals:\u003c\/strong\u003e Includes \u003cstrong data-start=\"1022\" data-end=\"1058\" data-is-only-node=\"\"\u003ereplaceable seats and seal rings\u003c\/strong\u003e, helping extend product life and reduce long-term maintenance costs. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ml7sxy\" data-start=\"1168\" data-end=\"1387\"\u003e\n\u003cstrong data-start=\"1170\" data-end=\"1201\"\u003eCode-compliant performance:\u003c\/strong\u003e Meets common industry standards including \u003cstrong data-start=\"1244\" data-end=\"1289\" data-is-only-node=\"\"\u003eASSE 1015, CSA, cUPC, and AWWA compliance\u003c\/strong\u003e, supporting approved installations in most jurisdictions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ftxglj\" data-start=\"1388\" data-end=\"1590\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"1390\" data-end=\"1416\"\u003ePro-grade reliability:\u003c\/strong\u003e Rated for up to \u003cstrong data-start=\"1433\" data-end=\"1491\" data-is-only-node=\"\"\u003e175 PSI working pressure and 180°F maximum temperature\u003c\/strong\u003e, making it suitable for typical municipal supply conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:688c6da3-751c-4421-8e73-08f1c3b4dea4-7\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:688c6da3-751c-4421-8e73-08f1c3b4dea4-7\" data-turn-id-container=\"request-WEB:688c6da3-751c-4421-8e73-08f1c3b4dea4-7\" data-testid=\"conversation-turn-16\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"bde2ae63-75f5-43dd-9c13-206a1f27183d\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"347\"\u003e\u003cstrong data-start=\"0\" data-end=\"83\"\u003eQ: What is the Zurn Wilkins 1-950XLT 1\" Top-Access Double Check Valve Assembly?\u003c\/strong\u003e\u003cbr data-start=\"83\" data-end=\"86\"\u003eA: The Zurn Wilkins 1-950XLT is a 1-inch lead-free double check valve assembly designed to prevent backflow contamination in low-hazard (non-health hazard) potable water systems by stopping backpressure and backsiphonage. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"349\" data-end=\"644\"\u003e\u003cstrong data-start=\"349\" data-end=\"399\"\u003eQ: What applications is the 1-950XLT used for?\u003c\/strong\u003e\u003cbr data-start=\"399\" data-end=\"402\"\u003eA: It is commonly used in irrigation systems, fire sprinkler loops, and commercial or residential plumbing where cross-connection protection is needed but a reduced pressure zone device is not required. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"646\" data-end=\"962\"\u003e\u003cstrong data-start=\"646\" data-end=\"700\"\u003eQ: What are the key features of the 950XLT series?\u003c\/strong\u003e\u003cbr data-start=\"700\" data-end=\"703\"\u003eA: It includes a top-access design for easy maintenance, replaceable seats and seals, corrosion-resistant stainless steel internals, and a compact wye-pattern body suitable for meter boxes and below-grade installations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"964\" data-end=\"1185\"\u003e\u003cstrong data-start=\"964\" data-end=\"1004\"\u003eQ: What are its performance ratings?\u003c\/strong\u003e\u003cbr data-start=\"1004\" data-end=\"1007\"\u003eA: The valve typically handles up to 175 PSI working pressure and 180°F maximum temperature, with hydrostatic test pressure up to 350 PSI. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1187\" data-end=\"1442\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1187\" data-end=\"1233\"\u003eQ: Is the Zurn Wilkins 1-950XLT ?\u003c\/strong\u003e\u003cbr data-start=\"1233\" data-end=\"1236\"\u003eA: Yes. It is listed to major standards including ASSE 1015, IAPMO\/CSA listings, and AWWA compliance for approved backflow protection in non-health hazard applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:15d07b9e-85e9-40b7-b286-42d6f6f630d0-8\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:15d07b9e-85e9-40b7-b286-42d6f6f630d0-8\" data-turn-id-container=\"request-WEB:15d07b9e-85e9-40b7-b286-42d6f6f630d0-8\" data-testid=\"conversation-turn-16\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"dbe5f272-6fb3-468f-baa5-ee06b9f641b8\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"72\" data-end=\"756\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"o9531d\" data-start=\"72\" data-end=\"167\"\u003eSchedule \u003cstrong data-start=\"83\" data-end=\"111\"\u003eannual certified testing\u003c\/strong\u003e to confirm proper backflow prevention and compliance.\u003c\/li\u003e\n\u003cli data-section-id=\"1qbtab2\" data-start=\"168\" data-end=\"275\"\u003eInspect regularly for \u003cstrong data-start=\"192\" data-end=\"239\"\u003eleaks, corrosion, or abnormal pressure loss\u003c\/strong\u003e, especially after system changes.\u003c\/li\u003e\n\u003cli data-section-id=\"1i640sz\" data-start=\"276\" data-end=\"373\"\u003eKeep \u003cstrong data-start=\"283\" data-end=\"343\"\u003eshutoff valves and test cocks clean and fully functional\u003c\/strong\u003e to ensure accurate testing.\u003c\/li\u003e\n\u003cli data-section-id=\"13u38ym\" data-start=\"374\" data-end=\"459\"\u003eFlush the line periodically to reduce \u003cstrong data-start=\"414\" data-end=\"434\"\u003esediment buildup\u003c\/strong\u003e inside the valve body.\u003c\/li\u003e\n\u003cli data-section-id=\"1lvq6bp\" data-start=\"460\" data-end=\"556\"\u003eProtect from \u003cstrong data-start=\"475\" data-end=\"498\"\u003efreezing conditions\u003c\/strong\u003e using insulation or seasonal drainage where applicable.\u003c\/li\u003e\n\u003cli data-section-id=\"eoayj5\" data-start=\"557\" data-end=\"680\"\u003eUse only \u003cstrong data-start=\"568\" data-end=\"635\"\u003egenuine repair parts from \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eZurn Wilkins\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e to maintain performance and certification.\u003c\/li\u003e\n\u003cli data-section-id=\"wdl8f5\" data-start=\"681\" data-end=\"756\" data-is-last-node=\"\"\u003eAfter servicing, \u003cstrong data-start=\"700\" data-end=\"724\"\u003ere-test the assembly\u003c\/strong\u003e before restoring water service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Zurn","offers":[{"title":"Default Title","offer_id":45805519044799,"sku":"1-950XLT","price":340.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/1-950XLT-2_3590abe6-bc87-4d5e-803f-51e016fd7a1a.jpg?v=1782958711","url":"https:\/\/www.mybackyardzone.com\/products\/1-950xlt-1in-double-check-valve-assy-fnpt-x-fnpt","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}