{"product_id":"watts-water-technologies-lf800m4-qt-pressure-vacuum-breaker","title":"Watts Water Technologies LF800M4-QT Pressure Vacuum Breaker","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a25814e-dfdc-83ec-b5ab-c285576f3ae2-9\" 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-c285576f3ae2-9\" data-turn-id-container=\"request-6a25814e-dfdc-83ec-b5ab-c285576f3ae2-9\" data-testid=\"conversation-turn-26\" 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=\"381fa1c8-0e95-4c00-88c6-80aed1e0f9b1\" 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=\"679\"\u003eThe Watts LF800M4-QT Pressure Vacuum Breaker is a 1\/2 inch lead-free backflow prevention device used in potable water systems to protect against backsiphonage and contamination of the water supply. Commonly installed in irrigation systems, laboratory equipment, commercial water distribution systems, industrial wash stations, agricultural applications, and specialty process water systems where backflow protection is required. Maintenance personnel, plumbing contractors, OEMs, and facility managers use this backflow preventer for regulatory compliance, system upgrades, replacement projects, and new installations requiring reliable cross-connection control.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"681\" data-end=\"698\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"699\" data-end=\"1524\"\u003eThe Watts LF800M4-QT Pressure Vacuum Breaker is widely used in lawn and landscape irrigation systems, commercial sprinkler installations, agricultural water distribution networks, greenhouse operations, industrial process water systems, laboratory facilities, schools, hospitals, manufacturing plants, municipal water systems, washdown stations, cooling equipment, and commercial building plumbing systems. The device provides protection against backsiphonage conditions that could contaminate potable water supplies and is commonly specified in applications where local plumbing codes require approved backflow prevention assemblies. Its lead-free construction makes it suitable for drinking water applications while helping facilities maintain compliance with water safety regulations and cross-connection control programs.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1526\" data-end=\"1555\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1556\" data-end=\"2257\"\u003e• Manufacturer Part Number (MPN): LF800M4-QT\u003cbr data-start=\"1600\" data-end=\"1603\"\u003e• Brand: Watts\u003cbr data-start=\"1617\" data-end=\"1620\"\u003e• Product Type: Pressure Vacuum Breaker Backflow Preventer\u003cbr data-start=\"1678\" data-end=\"1681\"\u003e• Series: LF800M4-QT\u003cbr data-start=\"1701\" data-end=\"1704\"\u003e• Connection Size: 1\/2 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• Check Valve Type: Spring Loaded\u003cbr data-start=\"1874\" data-end=\"1877\"\u003e• Backflow Protection: Backsiphonage Prevention\u003cbr data-start=\"1924\" data-end=\"1927\"\u003e• Shutoff Valves: Quarter-Turn Ball Valves\u003cbr data-start=\"1969\" data-end=\"1972\"\u003e• Test Cocks: Included\u003cbr data-start=\"1994\" data-end=\"1997\"\u003e• Service Media: Potable Water\u003cbr data-start=\"2027\" data-end=\"2030\"\u003e• Lead-Free: Yes\u003cbr data-start=\"2046\" data-end=\"2049\"\u003e• Installation Orientation: Vertical\u003cbr data-start=\"2085\" data-end=\"2088\"\u003e• Application: Irrigation and Potable Water Systems\u003cbr data-start=\"2139\" data-end=\"2142\"\u003e• Compliance: ASSE and CSA Approved Models Available\u003cbr data-start=\"2194\" data-end=\"2197\"\u003e• Function: Cross-Connection Control and Backflow Prevention\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2259\" data-end=\"2283\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2284\" data-end=\"2417\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Watts LF800M4-QT 1\/2\" Repair Assembly\u003cbr data-start=\"2323\" data-end=\"2326\"\u003e• Febco 765 1\/2\" Pressure Vacuum Breaker\u003cbr data-start=\"2366\" data-end=\"2369\"\u003e• Zurn Wilkins 720A 1\/2\" Pressure Vacuum Breaker\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\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\u003cdiv aria-hidden=\"true\" class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"WATTS","offers":[{"title":"New","offer_id":51731242680622,"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_21f239ac-0150-45f8-abb5-9d82739cf217.jpg?v=1770595784","url":"https:\/\/plgautomation.com\/products\/watts-water-technologies-lf800m4-qt-pressure-vacuum-breaker","provider":"PLG Automation ","version":"1.0","type":"link"}