{"product_id":"megaflo-main-300-litre-direct-unvented-hot-water-cylinder-7912288","title":"Megaflo Main 300 Litre Direct Unvented Hot Water Cylinder - 7912288","description":"\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 10px;\"\u003eThe \u003cstrong\u003eMegaflo Main 300 Litre Direct Unvented Hot Water Cylinder (7912288)\u003c\/strong\u003e is a UK-manufactured stainless steel hot water cylinder designed to provide reliable \u003cstrong\u003emains-pressure hot water\u003c\/strong\u003e for properties without access to mains gas. With a 300-litre capacity and two factory-fitted Incoloy 800 immersion heaters, it is well suited to very large homes, multiple-bathroom properties, off-grid installations and systems using solar PV or off-peak electricity tariffs.\u003c\/p\u003e\n\u003c!-- more --\u003e\n\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 10px;\"\u003e\u003cem\u003eMegaflo Main is the new name for the Main unvented cylinder range. This model replaces the Main 300 Litre Direct Unvented Hot Water Cylinder (720636401). Supplied as two boxes: cylinder plus fitting kit (90001992).\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 18px;\"\u003eThe cylinder features a high-grade stainless steel inner vessel, 50mm of factory-injected CFC\/HCFC-free polyurethane foam insulation and a \u003cstrong\u003e24-litre expansion vessel\u003c\/strong\u003e. The adjustable thermostat, factory-fitted controls and supplied unvented safety components provide a complete solution for direct hot water storage.\u003c\/p\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px;\"\u003e\n  \u003cspan style=\"background: #e0f2fe; color: #0369a1; padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e300L Capacity\u003c\/span\u003e\n  \u003cspan style=\"background: #fdefe0; color: #c2410c; padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003eDirect Unvented\u003c\/span\u003e\n  \u003cspan style=\"background: #eef2ff; color: #4338ca; padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e2 × 3kW Immersions\u003c\/span\u003e\n  \u003cspan style=\"background: #f3f4f6; color: #374151; padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e25-Year Vessel Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border: 1px solid #cbd5e1; border-left: 4px solid #0284c7; border-radius: 6px; padding: 14px; background: #f4f8fc;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; font-size: 15px; margin-bottom: 5px;\"\u003e300 Litre Storage\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px;\"\u003eLarge-capacity hot water storage designed for high-demand domestic applications.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border: 1px solid #cbd5e1; border-left: 4px solid #c2410c; border-radius: 6px; padding: 14px; background: #f4f8fc;\"\u003e\n    \u003cstrong style=\"display: block; color: #c2410c; font-size: 15px; margin-bottom: 5px;\"\u003eDual Immersion Heating\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px;\"\u003eTwo 3.0kW Incoloy 800 immersion heaters provide direct electric water heating.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border: 1px solid #cbd5e1; border-left: 4px solid #4338ca; border-radius: 6px; padding: 14px; background: #f4f8fc;\"\u003e\n    \u003cstrong style=\"display: block; color: #4338ca; font-size: 15px; margin-bottom: 5px;\"\u003e50mm Insulation\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px;\"\u003eFactory-injected CFC\/HCFC-free polyurethane foam helps minimise standing heat loss.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border: 1px solid #cbd5e1; border-left: 4px solid #475569; border-radius: 6px; padding: 14px; background: #f4f8fc;\"\u003e\n    \u003cstrong style=\"display: block; color: #475569; font-size: 15px; margin-bottom: 5px;\"\u003eHigh-Grade Stainless Steel\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px;\"\u003ePressure-tested stainless steel inner vessel designed for dependable hot water storage.\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; font-size: 20px; margin: 0 0 12px;\"\u003eApplications \u0026amp; suitability\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eLarge Homes\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eThe 300-litre capacity is suited to properties with high domestic hot water demand.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eMultiple Bathrooms\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eProvides substantial stored hot water capacity for properties with multiple bathrooms.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eOff-Grid Properties\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eDirect electric heating makes the cylinder suitable for properties without access to mains gas.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eSolar PV \u0026amp; Off-Peak Tariffs\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eSuitable for installations using solar PV generation or off-peak electricity tariffs.\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; font-size: 20px; margin: 0 0 12px;\"\u003eKey specifications\u003c\/h3\u003e\n\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; color: #374151;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eProduct Code\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e7912288\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003eDirect Unvented\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e300 Litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eHeight (A)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e2065 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003eØ 550 mm (cylinder) \/ 595 mm (base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eWeight (Empty)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e55 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eImmersion Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e2 × 3.0 kW @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eHeat-Up Time\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e315 mins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eStanding Heat Loss\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e2.52 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eErP Energy Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eOperating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e3.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e24 litre (supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003eConnections\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003e22mm compression \/ ¾\" BSP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600; background: #f4f8fc;\"\u003ePackaging\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e5e7eb;\"\u003eTwo boxes: cylinder plus fitting kit (90001992)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; font-size: 20px; margin: 0 0 12px;\"\u003eInstallation \u0026amp; compatibility\u003c\/h3\u003e\n\n\u003cdiv style=\"background: #f4f8fc; border-left: 4px solid #0284c7; padding: 16px; margin: 0 0 24px; border-radius: 4px;\"\u003e\n\u003cp style=\"color: #374151; font-size: 14px; line-height: 1.6; margin: 0;\"\u003eThe Megaflo Main 300 Litre Direct Unvented Cylinder is designed for \u003cstrong\u003edirect electric water heating\u003c\/strong\u003e using its two factory-fitted Incoloy 800 immersion heaters. It is supplied with a 24-litre expansion vessel, T\u0026amp;P relief valve, pressure reducing valve and factory-fitted controls. The cylinder is also suitable for installations using \u003cstrong\u003esolar PV systems and off-peak electricity tariffs\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; font-size: 20px; margin: 0 0 12px;\"\u003eDesign \u0026amp; performance benefits\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0284c7; margin-bottom: 5px;\"\u003eDual Immersion Heating\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eTwo 3.0kW Incoloy 800 immersion heaters provide a combined 6.0kW direct heating capacity.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #c2410c; margin-bottom: 5px;\"\u003eStainless Steel Inner Vessel\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eThe high-grade stainless steel inner vessel is pressure tested to 15 bar.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #4338ca; margin-bottom: 5px;\"\u003eFactory-Injected Insulation\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003e50mm CFC\/HCFC-free polyurethane foam insulation helps reduce standing heat loss.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #475569; margin-bottom: 5px;\"\u003eAdjustable Thermostat\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eThermostat adjustment from 10–70°C with an 80°C high-limit cut-out.\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; font-size: 20px; margin: 0 0 12px;\"\u003eAdditional installation features\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003e24L Expansion Vessel\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eA 24-litre expansion vessel is supplied as part of the cylinder package.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eFactory-Fitted Controls\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eFactory-fitted controls help provide a ready-to-install unvented cylinder system.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eKIWA \u0026amp; G3 Compliance\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eKIWA approved, Building Regulation G3 compliant and CE marked.\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; font-size: 20px; margin: 0 0 12px;\"\u003eIdeal for\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eVery Large Homes\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003e300 litres of stored hot water for properties with substantial domestic hot water requirements.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eMultiple-Bathroom Properties\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eLarge storage capacity for homes where hot water demand can be high.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eOff-Grid Applications\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eDirect electric heating makes it suitable for properties without mains gas.\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; border: 1px solid #e5e7eb; border-radius: 6px; padding: 14px;\"\u003e\n    \u003cstrong style=\"display: block; color: #0369a1; margin-bottom: 5px;\"\u003eSolar PV \u0026amp; Off-Peak Systems\u003c\/strong\u003e\n    \u003cspan style=\"color: #374151; font-size: 14px; line-height: 1.5;\"\u003eDesigned for use with solar PV generation and off-peak electricity tariffs.\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0;\"\u003eThe \u003cstrong\u003eMegaflo Main 300 Litre Direct Unvented Hot Water Cylinder\u003c\/strong\u003e combines high-capacity 300-litre storage, dual Incoloy 800 immersion heating, stainless steel construction and comprehensive unvented components. With its \u003cstrong\u003e25-year stainless steel inner vessel warranty\u003c\/strong\u003e and 1-year parts and labour warranty, it provides a robust solution for high-demand domestic hot water installations. \u003cstrong\u003eOrder now\u003c\/strong\u003e for a complete direct unvented hot water storage solution.\u003c\/p\u003e","brand":"Megaflo","offers":[{"title":"Default Title","offer_id":53681589518672,"sku":"7912288","price":743.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/main-300-litre-direct-unvented-hot-water-cylinder-720636401-2888516.jpg?v=1779438608","url":"https:\/\/getplumb.co.uk\/fr\/products\/megaflo-main-300-litre-direct-unvented-hot-water-cylinder-7912288","provider":"Getplumb","version":"1.0","type":"link"}