{"product_id":"watts-lf800m4-qt-3-4-anti-siphon-backflow-preventer-800m4-qt","title":"Watts LF800M4-QT 3\/4\" Anti-Siphon Backflow Preventer 800M4-QT","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a25814e-dfdc-83ec-b5ab-c285576f3ae2-33\" 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-6a25814e-dfdc-83ec-b5ab-c285576f3ae2-33\" data-turn-id-container=\"request-6a25814e-dfdc-83ec-b5ab-c285576f3ae2-33\" data-testid=\"conversation-turn-74\" data-scroll-anchor=\"false\" 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=\"731fe01d-6359-43ce-a062-4922a8014cf7\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" 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 dark markdown-new-styling\"\u003e\n\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"704\"\u003eThe Watts LF800M4-QT Anti-Siphon Backflow Preventer is a 3\/4 inch pressure vacuum breaker designed to protect potable water systems from backsiphonage and contamination caused by reverse flow conditions. Commonly installed in irrigation systems, lawn sprinkler networks, agricultural water systems, commercial landscaping applications, industrial washdown stations, and process water distribution systems requiring reliable backflow protection. Maintenance personnel, plumbing contractors, irrigation specialists, OEMs, and facility operators use this device for code compliance, system upgrades, replacement projects, and new installations requiring dependable cross-connection control.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"706\" data-end=\"723\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"724\" data-end=\"1512\"\u003eThe Watts LF800M4-QT Pressure Vacuum Breaker is widely used in residential and commercial irrigation systems, golf courses, parks, athletic fields, greenhouses, agricultural water distribution networks, schools, hospitals, apartment complexes, hotels, manufacturing facilities, municipal water systems, cooling equipment, washdown stations, and landscape maintenance operations. The device prevents contaminated water from being siphoned back into the potable water supply during pressure loss conditions, helping maintain water quality and regulatory compliance. It is commonly specified in applications where local plumbing codes require approved backflow prevention assemblies to protect drinking water systems from fertilizers, pesticides, chemicals, and other potential contaminants.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1514\" data-end=\"1543\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1544\" data-end=\"2358\"\u003e• Manufacturer Part Number (MPN): LF800M4-QT\u003cbr data-start=\"1588\" data-end=\"1591\"\u003e• Brand: Watts\u003cbr data-start=\"1605\" data-end=\"1608\"\u003e• Product Type: Anti-Siphon Backflow Preventer \/ Pressure Vacuum Breaker\u003cbr data-start=\"1680\" data-end=\"1683\"\u003e• Series: 800M4-QT\u003cbr data-start=\"1701\" data-end=\"1704\"\u003e• Connection Size: 3\/4 in.\u003cbr data-start=\"1730\" data-end=\"1733\"\u003e• Connection Type: Female NPT\u003cbr data-start=\"1762\" data-end=\"1765\"\u003e• Body Material: Lead-Free Bronze\u003cbr data-start=\"1798\" data-end=\"1801\"\u003e• Bonnet Material: Engineered Polymer\u003cbr data-start=\"1838\" data-end=\"1841\"\u003e• Shutoff Valves: Quarter-Turn Ball Valves\u003cbr data-start=\"1883\" data-end=\"1886\"\u003e• Test Cocks: Included\u003cbr data-start=\"1908\" data-end=\"1911\"\u003e• Backflow Protection Type: Backsiphonage Prevention\u003cbr data-start=\"1963\" data-end=\"1966\"\u003e• Check Valve Type: Spring Loaded\u003cbr data-start=\"1999\" data-end=\"2002\"\u003e• Service Media: Potable Water\u003cbr data-start=\"2032\" data-end=\"2035\"\u003e• Installation Orientation: Vertical\u003cbr data-start=\"2071\" data-end=\"2074\"\u003e• Lead-Free Construction: Yes\u003cbr data-start=\"2103\" data-end=\"2106\"\u003e• Application: Irrigation and Water Distribution Systems\u003cbr data-start=\"2162\" data-end=\"2165\"\u003e• Function: Cross-Connection Control and Backflow Prevention\u003cbr data-start=\"2225\" data-end=\"2228\"\u003e• Compliance: ASSE 1020 and CSA Certified Models Available\u003cbr data-start=\"2286\" data-end=\"2289\"\u003e• Suitable For: Residential, Commercial, and Industrial Water Systems\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2360\" data-end=\"2384\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2385\" data-end=\"2533\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Febco 765 3\/4\" Pressure Vacuum Breaker\u003cbr data-start=\"2425\" data-end=\"2428\"\u003e• Zurn Wilkins 720A 3\/4\" Pressure Vacuum Breaker\u003cbr data-start=\"2476\" data-end=\"2479\"\u003e• Watts 800M4-FR 3\/4\" Pressure Vacuum Breaker Assembly\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"WATTS","offers":[{"title":"New","offer_id":51731236618542,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6840d80f-6daa-41f1-ac7d-a7b2d3951127.jpg?v=1770595764","url":"https:\/\/plgautomation.com\/products\/watts-lf800m4-qt-3-4-anti-siphon-backflow-preventer-800m4-qt","provider":"PLG Automation ","version":"1.0","type":"link"}