{"product_id":"oso-add-on-130-kit-fitting-kit-for-extra-acc130-superstream-accumulator-expansion","title":"OSO Add On 130 Kit Fitting Kit For Extra Acc130 SuperStream Accumulator Expansion","description":"\u003cstyle\u003e\n  .dw-wrap{font-family:inherit;color:inherit;line-height:1.7;font-size:16px}\n  .dw-wrap p,.dw-wrap li,.dw-wrap td,.dw-wrap th{font-size:16px!important;line-height:1.7}\n  .dw-wrap h2{font-size:22px!important;font-weight:700;color:#1a3a5c;border-bottom:3px solid #008377;padding-bottom:6px;margin:2rem 0 1rem;line-height:1.3}\n  .dw-wrap h3{font-size:17px!important;font-weight:700;color:#1a3a5c;margin:1.2rem 0 0.4rem;line-height:1.4}\n  .dw-wrap p{margin:0 0 1rem}\n  .dw-wrap ul{padding-left:1.5rem;margin:0 0 1rem}\n  .dw-wrap ul li{margin-bottom:0.5rem}\n  .dw-badge{display:inline-block;font-size:13px!important;font-weight:700;border-radius:4px;padding:2px 10px;margin-right:5px;margin-bottom:4px;vertical-align:middle}\n  .dw-badge.blue{background:#008377;color:#fff}\n  .dw-badge.navy{background:#1a3a5c;color:#fff}\n  .dw-badge.teal{background:#0d9488;color:#fff}\n  .dw-badge.green{background:#1a7a3c;color:#fff}\n  .dw-badge.grey{background:#555;color:#fff}\n  .dw-intro-box{background:#e0f2fe;border-left:4px solid #008377CF;padding:1.1rem 1.4rem;border-radius:0 6px 6px 0;margin-bottom:1.5rem}\n  .dw-intro-box p{margin:0!important}\n  .dw-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:0.85rem;margin-bottom:1.2rem}\n  .dw-card{background:#e0f2fe;border:1px solid #90caf9;border-radius:6px;padding:1rem 1.1rem;line-height:1.6}\n  .dw-card strong{display:block;color:#1a3a5c;margin-bottom:0.35rem;font-size:16px!important}\n  .dw-info-box{background:#f0fdf4;border:1px solid #86efac;border-radius:6px;padding:1rem 1.2rem;margin:1.2rem 0}\n  .dw-info-box p{margin:0 0 0.5rem!important;color:#065f46;font-weight:700}\n  .dw-comp-box{background:#fff3cd;border:1px solid #ffc107;border-radius:5px;padding:0.9rem 1.1rem;margin:0.8rem 0}\n  .dw-spec-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}\n  .dw-spec-table th{background:#1a3a5c;color:#fff!important;text-align:left;padding:0.7rem 1rem;font-weight:700;font-size:16px!important}\n  .dw-spec-table td{padding:0.6rem 1rem;border-bottom:1px solid #bde0f5;vertical-align:top;font-size:16px!important}\n  .dw-spec-table tr:nth-child(even) td{background:#e0f2fe}\n  .dw-spec-table td:first-child{font-weight:600;color:#111;width:44%}\n  .dw-faq-item{border-bottom:1px solid #bde0f5;padding:0.9rem 0}\n  .dw-faq-item:last-child{border-bottom:none}\n  .dw-faq-item strong{color:#1a3a5c;font-size:16px!important;display:block;margin-bottom:0.3rem}\n  .dw-contents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0.6rem;margin-bottom:1.2rem}\n  .dw-contents-item{background:#f0f9ff;border:1px solid #bde0f5;border-radius:5px;padding:0.6rem 0.9rem;font-size:15px!important}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dw-wrap\"\u003e\n\n  \u003cdiv style=\"margin-bottom:1rem\"\u003e\n    \u003cspan class=\"dw-badge blue\"\u003e11007328\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eAdd On 130 Kit\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003eAcc130 Specific\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003eExpansion Fitting\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eFor Extra Acc130 Only\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eOSO Add On 130 Kit (11007328)\u003c\/strong\u003e — Dedicated expansion fitting kit for adding extra Acc130 SuperStream accumulators only | Includes size-specific vessel connector, isolation valve \u0026amp; brass fittings | Enables parallel connection \u0026amp; increased total flow\/volume | WRAS-compliant brass components | Use one kit per additional Acc130 (beyond the first unit which uses Upstream Kit) | Not compatible with larger Acc models\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ Acc130-specific expansion – perfect when building a multi-Acc130 system\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003eIf you're scaling with multiple 130 L units (e.g. for very even distribution or space constraints), this kit ensures correct connection. For mixed sizes or larger models use the general Add On Kit (11007327).\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe OSO Add On 130 Kit (11007328) is the specialised expansion accessory tailored exclusively for the Acc130 SuperStream accumulator. It allows you to add extra 130 L units in parallel to increase overall stored volume and flow-boosting capacity while keeping the system balanced and cost-effective.\u003c\/p\u003e\n\n  \u003cp\u003eAfter installing the first Acc130 with the mandatory Upstream Kit 22\/28 mm (11007380), each additional Acc130 requires one of these kits. It includes precisely sized brass fittings: a pressure vessel connector matched to the Acc130 inlet, a full-bore isolation ball valve (for individual unit servicing without system shutdown), and necessary brass bushes\/adapters. All parts are WRAS-approved for potable water use and fully compliant with UK Water Regulations.\u003c\/p\u003e\n\n  \u003cp\u003eThis kit is **not interchangeable** with the general Add On Kit (11007327) when adding only Acc130 units — the connector and valve sizing are optimised specifically for the 130 L model to ensure a perfect, leak-free fit. It makes expanding an Acc130-based system straightforward, ideal for properties where smaller individual units offer better placement flexibility (e.g. multiple lofts, cupboards or plant areas).\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the OSO Add On 130 Kit Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAcc130-Optimised Design\u003c\/strong\u003e — Connector and fittings sized precisely for the 130 L model — guaranteed perfect fit \u0026amp; performance.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIndividual Isolation\u003c\/strong\u003e — Full-bore ball valve allows servicing or draining one Acc130 without affecting others in the array.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWRAS-Compliant Brass\u003c\/strong\u003e — All components approved for drinking water — safe, reliable \u0026amp; regulation-compliant.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCost-Effective Acc130 Scaling\u003c\/strong\u003e — Add capacity in smaller 130 L increments without buying a second full Upstream Kit.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParallel Array Ready\u003c\/strong\u003e — Enables high-flow multi-Acc130 systems (e.g. 2–4 units) for even distribution or space-limited installs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimple \u0026amp; Secure Connection\u003c\/strong\u003e — Brass fittings ensure durable, leak-free parallel linking every time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"dw-grid\"\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eAcc130-Specific Vessel Connector\u003c\/strong\u003eBrass fitting tailored to Acc130 inlet for secure, exact connection.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eFull-Bore Isolation Valve\u003c\/strong\u003eLever ball valve — isolate individual Acc130 units easily.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eBrass Bushes \u0026amp; Adapters\u003c\/strong\u003eIncludes ¼\" × ½\" BSP bush for optional gauge or future use.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eWRAS Approved\u003c\/strong\u003eAll parts compliant for potable water systems in the UK.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eParallel Expansion\u003c\/strong\u003eBuild multi-Acc130 arrays without upstream rework.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"dw-spec-table\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e11007328\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eExtra Acc130 SuperStream accumulators only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eQuantity Required\u003c\/td\u003e\n\u003ctd\u003eOne per additional Acc130 (after first with Upstream Kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eHigh-quality brass (WRAS-approved)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003eAcc130-specific vessel connector, isolation ball valve, brass bush\/adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Pressure\u003c\/td\u003e\n\u003ctd\u003e10 bar (matches accumulator rating)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eWRAS, Water Supply Regulations (UK)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cdiv class=\"dw-contents-grid\"\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Acc130-Specific Brass Pressure Vessel Connector\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Full-bore Isolation Ball Valve\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Brass Bush (¼\" × ½\" BSP)\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Installation \u0026amp; connection guide\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Use with: One Upstream Kit 22\/28 mm (11007380) for the complete system + one Add On 130 Kit per extra Acc130. For larger models or mixed sizes use general Add On Kit (11007327). Installation by qualified plumber per Water Regulations.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhy is there a separate kit just for Acc130?\u003c\/strong\u003e\n    The connector and valve are sized specifically for the smaller 1\" BSP inlet on the Acc130 — ensures perfect, leak-free fit when expanding with 130 L units only.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan I use this kit with larger Acc models?\u003c\/strong\u003e\n    No — this is Acc130-only. For Acc200, Acc250, Acc350 or Acc450 use the general Add On Kit (11007327).\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow many kits do I need for multiple Acc130 units?\u003c\/strong\u003e\n    One Upstream Kit for the first Acc130 + one Add On 130 Kit per additional unit (e.g. 4 Acc130 = 1 Upstream + 3 Add On 130 Kits).\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eAre the fittings WRAS-approved?\u003c\/strong\u003e\n    Yes — all brass components are approved for potable water systems under UK regulations.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it include everything to connect an extra Acc130?\u003c\/strong\u003e\n    Yes — vessel connector, isolation valve and necessary bushes — ready for parallel plumbing.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWho should install this kit?\u003c\/strong\u003e\n    A qualified plumber in accordance with Water Supply Regulations — ensures compliance and preserves warranty.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat if I mix Acc130 and larger models?\u003c\/strong\u003e\n    Use the general Add On Kit (11007327) for the larger units — this 130-specific kit is only for additional Acc130 connections.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"OSO Hotwater","offers":[{"title":"Default Title","offer_id":63734087254365,"sku":"Upstream-Add-On-130-Kit","price":110.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/OSOSuperStreamColdWaterAccumulatorSchematics.webp?v=1772783120","url":"https:\/\/qualityheating.co.uk\/products\/oso-add-on-130-kit-fitting-kit-for-extra-acc130-superstream-accumulator-expansion","provider":"AIZO Quality Heating","version":"1.0","type":"link"}