{"product_id":"raypak-003766f-inlet-and-outlet-flange-kit-1-1-2-inch-and-2-inch-cast-iron","title":"Raypak 003766F Inlet and Outlet Flange Kit – 1-1\/2 Inch and 2 Inch, Cast Iron","description":"\u003cstyle\u003e\n  .atb-product-description {\n    --atb-blue: #0b5f8f;\n    --atb-dark-blue: #063f60;\n    --atb-orange: #f47b20;\n    --atb-light-blue: #eef8fc;\n    --atb-light-orange: #fff4ea;\n    --atb-border: #d9e3e8;\n    --atb-text: #24323a;\n    --atb-muted: #5d6d75;\n    --atb-white: #ffffff;\n    max-width: 1100px;\n    margin: 0 auto;\n    color: var(--atb-text);\n    font-family: Arial, Helvetica, sans-serif;\n    line-height: 1.65;\n  }\n\n  .atb-product-description * {\n    box-sizing: border-box;\n  }\n\n  .atb-product-description .atb-hero {\n    background: linear-gradient(135deg, #073f60 0%, #0b5f8f 100%);\n    color: #ffffff;\n    border-radius: 14px;\n    padding: 30px;\n    margin: 0 0 22px;\n    box-shadow: 0 8px 22px rgba(6, 63, 96, 0.16);\n  }\n\n  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color: rgba(255, 255, 255, 0.9);\n  }\n\n  @media (max-width: 749px) {\n    .atb-product-description .atb-hero {\n      padding: 23px 20px;\n    }\n\n    .atb-product-description .atb-hero h2 {\n      font-size: 24px;\n    }\n\n    .atb-product-description .atb-feature-grid {\n      grid-template-columns: 1fr;\n    }\n\n    .atb-product-description .atb-spec-table th,\n    .atb-product-description .atb-spec-table td {\n      display: block;\n      width: 100%;\n    }\n\n    .atb-product-description .atb-spec-table th {\n      padding-bottom: 5px;\n      border-bottom: 0;\n    }\n\n    .atb-product-description .atb-spec-table td {\n      padding-top: 5px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"atb-product-description\"\u003e\n\n  \u003csection class=\"atb-hero\"\u003e\n    \u003cdiv class=\"atb-eyebrow\"\u003eDiscontinued Raypak Heater Part\u003c\/div\u003e\n    \u003ch2\u003eRaypak 003766F Cast Iron Inlet \u0026amp; Outlet Flange Kit\u003c\/h2\u003e\n    \u003cp\u003e\n      Original cast iron flange kit for select Raypak pool and spa heaters. This item is discontinued and has been replaced by the updated brass Raypak 013812F flange kit.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003cdiv class=\"atb-badges\"\u003e\n    \u003cspan class=\"atb-badge\"\u003e✓ Genuine Raypak Part\u003c\/span\u003e\n    \u003cspan class=\"atb-badge atb-badge-orange\"\u003e⚠ Discontinued Item\u003c\/span\u003e\n    \u003cspan class=\"atb-badge\"\u003e✓ Replaced by Raypak 013812F\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"atb-intro\"\u003e\n    The Raypak \u003cstrong\u003e003766F\u003c\/strong\u003e inlet and outlet flange kit was used to create the water connection points between select Raypak heater manifolds and 1-1\/2 inch or 2 inch plumbing. This original cast iron version is no longer available.\n  \u003c\/p\u003e\n\n  \u003cdiv class=\"atb-callout\"\u003e\n    \u003ch3\u003eDiscontinued: Updated Replacement Available\u003c\/h3\u003e\n    \u003cp\u003e\n      Raypak 003766F has been discontinued. The current updated replacement is the \u003cstrong\u003eRaypak 013812F Brass Flange Kit\u003c\/strong\u003e.\n    \u003c\/p\u003e\n    \u003cp\u003e\n      The updated brass kit performs the same inlet and outlet connection function while offering improved corrosion resistance compared with the original cast iron design.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003csection class=\"atb-feature-grid\"\u003e\n    \u003cdiv class=\"atb-feature-card\"\u003e\n      \u003cdiv class=\"atb-feature-icon\"\u003e↻\u003c\/div\u003e\n      \u003ch3\u003eUpdated Replacement Path\u003c\/h3\u003e\n      \u003cp\u003e\n        Replace obsolete 003766F flanges with Raypak 013812F instead of attempting to repair severely corroded cast iron fittings.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"atb-feature-card\"\u003e\n      \u003cdiv class=\"atb-feature-icon\"\u003e💧\u003c\/div\u003e\n      \u003ch3\u003eHeater Water Connections\u003c\/h3\u003e\n      \u003cp\u003e\n        Flanges connect the heater water manifold to the pool plumbing and help maintain a sealed water path.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"atb-feature-card\"\u003e\n      \u003cdiv class=\"atb-feature-icon\"\u003e🔍\u003c\/div\u003e\n      \u003ch3\u003eConfirm Heater Model\u003c\/h3\u003e\n      \u003cp\u003e\n        Verify your Raypak heater model and existing manifold configuration before ordering the replacement kit.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003cdetails open\u003e\n    \u003csummary\u003eProduct Overview\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cp\u003e\n        The Raypak 003766F was the original cast iron inlet and outlet flange kit used on select Raypak gas pool and spa heaters. These flanges secure the plumbing connections at the heater’s water manifold.\n      \u003c\/p\u003e\n      \u003cp\u003e\n        Because the original part is discontinued, customers needing to replace cracked, corroded, leaking, or deteriorated 003766F flanges should use the current Raypak 013812F brass replacement kit.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eCurrent Replacement Part\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cp\u003e\n        The correct current replacement for Raypak 003766F is:\n      \u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eRaypak 013812F\u003c\/strong\u003e — Brass Inlet and Outlet Flange Kit\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003e\n        The updated 013812F kit is designed for compatible 1-1\/2 inch and 2 inch heater plumbing applications and replaces the obsolete cast iron flange configuration.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen to Replace the Flange Kit\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cul\u003e\n        \u003cli\u003eWater leaking at the heater inlet or outlet plumbing connection\u003c\/li\u003e\n        \u003cli\u003eVisible corrosion, pitting, rust, or cracking on the flange body\u003c\/li\u003e\n        \u003cli\u003eDeteriorated sealing surfaces or damaged gaskets\u003c\/li\u003e\n        \u003cli\u003eLoose or unstable plumbing connection at the heater manifold\u003c\/li\u003e\n        \u003cli\u003eReplacing an old cast iron flange with the updated brass version\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eSpecifications\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003ctable class=\"atb-spec-table\"\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n            \u003cth\u003eOriginal Part Number\u003c\/th\u003e\n            \u003ctd\u003e003766F\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eStatus\u003c\/th\u003e\n            \u003ctd\u003eDiscontinued\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eCurrent Replacement\u003c\/th\u003e\n            \u003ctd\u003eRaypak 013812F Brass Flange Kit\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eOriginal Material\u003c\/th\u003e\n            \u003ctd\u003eCast Iron\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eReplacement Material\u003c\/th\u003e\n            \u003ctd\u003eBrass\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eConnection Sizes\u003c\/th\u003e\n            \u003ctd\u003e1-1\/2 inch and 2 inch plumbing connections\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eApplication\u003c\/th\u003e\n            \u003ctd\u003eInlet and outlet water manifold connections on select Raypak gas pool and spa heaters\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eCompatibility\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cp\u003e\n        This discontinued part and its 013812F replacement are used on select Raypak atmospheric gas pool and spa heaters. Compatibility can vary by heater series, age, water manifold configuration, and plumbing arrangement.\n      \u003c\/p\u003e\n      \u003cp\u003e\n        Please verify your heater model number and existing flange configuration before ordering. Product photos and connection size alone are not enough to confirm fitment.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eInstallation Notes\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cp\u003e\n        Heater water connection repairs should be completed by a qualified pool professional or experienced technician.\n      \u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003eShut off electrical power and gas supply to the heater before servicing.\u003c\/li\u003e\n        \u003cli\u003eAllow the heater and plumbing to cool completely.\u003c\/li\u003e\n        \u003cli\u003eDrain water from the heater and connected plumbing before removing the old flanges.\u003c\/li\u003e\n        \u003cli\u003eInspect manifold connection surfaces for corrosion, cracks, or damage.\u003c\/li\u003e\n        \u003cli\u003eUse the correct gaskets and mounting hardware supplied with the replacement kit.\u003c\/li\u003e\n        \u003cli\u003ePressure-test the plumbing connection and inspect for leaks before returning the heater to service.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdiv class=\"atb-expert-tip\"\u003e\n    \u003ch3\u003eAqua Terra Backyard Expert Tip\u003c\/h3\u003e\n    \u003cp\u003e\n      A leaking heater connection is not always caused by the flange itself. Before ordering, inspect the gasket surfaces, union connections, plumbing alignment, manifold condition, and any visible corrosion around the heater water connections. Replacing a damaged cast iron flange with the updated brass kit is often the best long-term repair path.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eFrequently Asked Questions\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cp\u003e\n        \u003cstrong\u003eIs Raypak 003766F still available?\u003c\/strong\u003e\u003cbr\u003e\n        No. Raypak 003766F is discontinued.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        \u003cstrong\u003eWhat replaces Raypak 003766F?\u003c\/strong\u003e\u003cbr\u003e\n        The current replacement is Raypak 013812F, a brass inlet and outlet flange kit for compatible applications.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        \u003cstrong\u003eWill the brass 013812F work in place of the old cast iron flange?\u003c\/strong\u003e\u003cbr\u003e\n        It is the current replacement path for compatible Raypak heater applications. Confirm your heater model and existing plumbing configuration before ordering.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        \u003cstrong\u003eDoes this part fix every heater leak?\u003c\/strong\u003e\u003cbr\u003e\n        Not necessarily. Leaks can also come from damaged gaskets, unions, heater manifold corrosion, plumbing stress, or other water connection issues.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping \u0026amp; Returns\u003c\/summary\u003e\n    \u003cdiv class=\"atb-details-content\"\u003e\n      \u003cp\u003e\n        This listing is for a discontinued legacy part number and is provided for reference and replacement identification purposes. Customers needing a working replacement should order the updated Raypak 013812F brass flange kit after confirming compatibility.\n      \u003c\/p\u003e\n      \u003cp\u003e\n        Please verify heater model, plumbing size, and flange configuration before ordering replacement heater parts.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003csection class=\"atb-support-box\"\u003e\n    \u003ch3\u003eNeed Help Confirming Your Raypak Flange Kit?\u003c\/h3\u003e\n    \u003cp\u003e\n      Contact Aqua Terra Backyard with your Raypak heater model number, a photo of the existing inlet and outlet connection, and the original part number if available. We will help identify the correct current replacement before you order.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"Raypak","offers":[{"title":"Default Title","offer_id":52023974789394,"sku":"003766F","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/Raypak_003766F_Inlet_and_Outlet_Flange_Kit_1-1_2_Inch_and_2_Inch_Cast_Iron.jpg?v=1775838211","url":"https:\/\/www.aquaterrabackyard.com\/products\/raypak-003766f-inlet-and-outlet-flange-kit-1-1-2-inch-and-2-inch-cast-iron","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}