{"product_id":"oso-acc130-superstream-130l-cold-water-accumulator-tank","title":"OSO Acc130 SuperStream 130L Cold Water Accumulator Tank","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\"\u003e11007350\u003c\/span\u003e\n    \u003cspan class=\"dw-badge navy\"\u003eAcc130\u003c\/span\u003e\n    \u003cspan class=\"dw-badge teal\"\u003eSuperStream\u003c\/span\u003e\n    \u003cspan class=\"dw-badge green\"\u003e130 L\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003eCold Water Accumulator\u003c\/span\u003e\n    \u003cspan class=\"dw-badge grey\"\u003ePower-Free Booster\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-intro-box\"\u003e\n    \u003cp\u003e\u003cstrong\u003eOSO Acc130 SuperStream 130 L Accumulator\u003c\/strong\u003e — Patented power-free cold water booster using CAD2 diaphragm technology | Delivers up to ~80 l\/min extra flow | Silent, zero-energy, zero-maintenance solution for low-pressure mains | Lightweight composite tank | WRAS-approved butyl membrane | 5-year warranty | Requires Upstream Kit 22\/28 mm (sold separately) for installation\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-comp-box\"\u003e\n    \u003cstrong style=\"color:#856404\"\u003e✅ The ultimate green alternative to noisy, power-hungry booster pumps\u003c\/strong\u003e\n    \u003cp style=\"margin:0.3rem 0 0;color:#5a3a00\"\u003ePerfect for properties with poor mains (low flow\/pressure), multi-outlet demand, combi boilers, unvented cylinders or showers. No electricity = no running costs, no noise (0 dB), no servicing. Works flawlessly during power cuts. Expandable — add more units for even higher flow.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003eThe OSO SuperStream Acc130 is a game-changing cold water accumulator that solves one of the most common UK plumbing frustrations: weak flow and pressure drops when multiple taps\/showers are used at once. Traditional mains supplies often can't cope, especially in older properties, apartments, or areas with small incoming pipes\/shared supplies. The Acc130 changes that by storing potable water in a sealed hygienic chamber (virgin butyl diaphragm — WRAS ref 1501305) under a pre-charged air pressure. When demand exceeds incoming flow, the stored water is released automatically — supplementing the mains seamlessly and delivering powerful, consistent pressure without any intervention.\u003c\/p\u003e\n\n  \u003cp\u003eThanks to the patented CAD2 diaphragm design, it achieves this with zero moving parts, zero electricity, zero noise and zero maintenance for the entire 5-year warranty period. The composite fiberglass\/epoxy shell is immensely strong yet lightweight (only 16 kg empty), corrosion-proof, and easy to manoeuvre into lofts or cupboards. It's fully compliant with UK water regulations and provides a \"mini reservoir\" of clean drinking-quality water right where you need it most.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat Makes the SuperStream Acc130 Special?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e100% Passive \u0026amp; Green\u003c\/strong\u003e — No pump, no power consumption, no CO₂ emissions, no electricity bills — truly sustainable boosting.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSilent Operation\u003c\/strong\u003e — Completely noiseless (unlike booster pumps at 50–70 dB), ideal for quiet homes or night-time use.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePatented CAD2 Technology\u003c\/strong\u003e — Controlled Action Diaphragm prevents waterlogging, ensures even pressure delivery, and maximises usable volume (~65 L effective at typical 1.5 bar differential).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-Outlet Performance\u003c\/strong\u003e — Eliminates pressure drops during simultaneous use — showers stay powerful, taps fill fast, combis recover quickly.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNo Servicing Ever\u003c\/strong\u003e — No filters to clean, no seals to replace — fit and forget for 5+ years.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Durable\u003c\/strong\u003e — Composite construction resists corrosion far better than steel vessels; easy retrofit or new-build install.\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\u003eFlow Boost\u003c\/strong\u003eSupplements mains by up to ~80 l\/min — transforms poor supplies into high-performance.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eZero Energy \u0026amp; Noise\u003c\/strong\u003eFully passive — 0 dB, 0 W consumption, works in power cuts.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eHygienic \u0026amp; WRAS\u003c\/strong\u003eButyl diaphragm approved for potable water (WRAS 1501305).\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eComposite Shell\u003c\/strong\u003eFibreglass\/epoxy — lightweight (16 kg empty), non-corrosive, 5-year guarantee.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003ePre-Charged Air\u003c\/strong\u003eFactory 1.4 bar — adjustable on-site for optimal performance.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003eExpandable System\u003c\/strong\u003eParallel install multiple units with add-on kits for commercial-level flow.\u003c\/div\u003e\n    \u003cdiv class=\"dw-card\"\u003e\n\u003cstrong\u003ePatented Design\u003c\/strong\u003eUK patent protected (no. 2349908) — proven reliability since launch.\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\u003e11007350\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTotal Vessel Volume\u003c\/td\u003e\n\u003ctd\u003e130 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUsable Water Volume\u003c\/td\u003e\n\u003ctd\u003e~65 litres (at 1.5 bar differential pressure)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (Ø × Height)\u003c\/td\u003e\n\u003ctd\u003e418 × 1227 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEmpty Weight\u003c\/td\u003e\n\u003ctd\u003e16 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFull Weight (approx.)\u003c\/td\u003e\n\u003ctd\u003e81 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003e1\" BSP male × 28 mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Working Pressure\u003c\/td\u003e\n\u003ctd\u003e8.6 bar (860 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePre-charge Pressure\u003c\/td\u003e\n\u003ctd\u003e1.4 bar (factory — adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Boost Head (closed valve)\u003c\/td\u003e\n\u003ctd\u003e4.3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWater Temperature Range\u003c\/td\u003e\n\u003ctd\u003e4 °C to 35 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAmbient Temperature Max\u003c\/td\u003e\n\u003ctd\u003e40 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMembrane Material\u003c\/td\u003e\n\u003ctd\u003eButyl rubber (WRAS 1501305)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTank Construction\u003c\/td\u003e\n\u003ctd\u003eContinuous strand fibreglass + epoxy resin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (vessel \u0026amp; diaphragm)\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✔ 1 × Acc130 SuperStream Accumulator Vessel\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ 1\" BSP male to 28 mm compression fittings\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Pre-charge adjustment instructions\u003c\/div\u003e\n    \u003cdiv class=\"dw-contents-item\"\u003e✔ Full installation \u0026amp; commissioning manual\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-info-box\"\u003e\n    \u003cp\u003e✅ Essential companion products: Upstream Kit 22\/28 mm (11007380) for first unit + Add-on Kit (11007327) for each extra accumulator. For very low pressure (\u0026lt;2 bar dynamic), pair with SuperStream Charger Pump (11007348).\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\u003eDoes the Acc130 need electricity or a pump?\u003c\/strong\u003e\n    No — it's 100% passive with no moving parts, no power draw, and no noise. It boosts flow using stored pressure only.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat flow\/pressure improvement can I expect?\u003c\/strong\u003e\n    Typically adds up to ~80 litres per minute of extra flow (subject to pipe sizing). Pressure remains stable even with multiple outlets open — ideal for power-shower performance without a shower pump.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs it suitable for drinking water?\u003c\/strong\u003e\n    Yes — the butyl membrane is WRAS approved (1501305) and the system stores wholesome potable water with no additives or treatment needed.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eHow long does the pre-charge last?\u003c\/strong\u003e\n    The air pre-charge is sealed and designed to last the life of the unit (5+ years). Periodic checks\/adjustments are simple if needed, but rarely required.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan I install multiple Acc130 units?\u003c\/strong\u003e\n    Yes — parallel connection is easy and recommended for very high demand (e.g. large homes, small commercial). Use one Upstream Kit for the first unit and Add-on Kits for each additional.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eDoes it work with unvented cylinders or combi boilers?\u003c\/strong\u003e\n    Perfectly — boosts both hot and cold services. Many customers use it to achieve reliable performance from combis or unvented systems on weak mains.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eWhat if my mains pressure is extremely low (\u0026lt;1 bar)?\u003c\/strong\u003e\n    For dynamic pressures below ~2 bar, combine with the optional SuperStream Charger Pump (11007348) to pre-boost incoming supply to ~3.5 bar — then let the accumulator handle peak demand.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eIs maintenance required?\u003c\/strong\u003e\n    None — no filters, no seals to replace, no annual service. Just install and enjoy reliable boosted flow for years.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dw-faq-item\"\u003e\n    \u003cstrong\u003eCan it be installed in any orientation?\u003c\/strong\u003e\n    Vertical mounting only for the Acc130. For horizontal options see Acc200\/250 models with cradle accessory.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"OSO Hotwater","offers":[{"title":"Default Title","offer_id":63694655684957,"sku":"Acc130","price":770.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/OSOSuperStreamColdWaterAccumulatorTank.jpg?v=1772780702","url":"https:\/\/qualityheating.co.uk\/products\/oso-acc130-superstream-130l-cold-water-accumulator-tank","provider":"AIZO Quality Heating","version":"1.0","type":"link"}