OSO Acc130 SuperStream 130L Cold Water Accumulator Tank
OSO Acc130 SuperStream 130 L Accumulator — 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
Perfect 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.
The 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.
Thanks 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.
What Makes the SuperStream Acc130 Special?
- 100% Passive & Green — No pump, no power consumption, no CO₂ emissions, no electricity bills — truly sustainable boosting.
- Silent Operation — Completely noiseless (unlike booster pumps at 50–70 dB), ideal for quiet homes or night-time use.
- Patented CAD2 Technology — Controlled Action Diaphragm prevents waterlogging, ensures even pressure delivery, and maximises usable volume (~65 L effective at typical 1.5 bar differential).
- Multi-Outlet Performance — Eliminates pressure drops during simultaneous use — showers stay powerful, taps fill fast, combis recover quickly.
- No Servicing Ever — No filters to clean, no seals to replace — fit and forget for 5+ years.
- Lightweight & Durable — Composite construction resists corrosion far better than steel vessels; easy retrofit or new-build install.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 11007350 |
| Total Vessel Volume | 130 litres |
| Usable Water Volume | ~65 litres (at 1.5 bar differential pressure) |
| Dimensions (Ø × Height) | 418 × 1227 mm |
| Empty Weight | 16 kg |
| Full Weight (approx.) | 81 kg |
| Connections | 1" BSP male × 28 mm compression |
| Max Working Pressure | 8.6 bar (860 kPa) |
| Pre-charge Pressure | 1.4 bar (factory — adjustable) |
| Max Boost Head (closed valve) | 4.3 bar |
| Water Temperature Range | 4 °C to 35 °C |
| Ambient Temperature Max | 40 °C |
| Membrane Material | Butyl rubber (WRAS 1501305) |
| Tank Construction | Continuous strand fibreglass + epoxy resin |
| Warranty | 5 years (vessel & diaphragm) |
What's in the Box
✅ Essential companion products: Upstream Kit 22/28 mm (11007380) for first unit + Add-on Kit (11007327) for each extra accumulator. For very low pressure (<2 bar dynamic), pair with SuperStream Charger Pump (11007348).
Frequently Asked Questions
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OSO Acc130 SuperStream 130L Cold Water Accumulator Tank
OSO Acc130 SuperStream 130 L Accumulator — 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
Perfect 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.
The 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.
Thanks 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.
What Makes the SuperStream Acc130 Special?
- 100% Passive & Green — No pump, no power consumption, no CO₂ emissions, no electricity bills — truly sustainable boosting.
- Silent Operation — Completely noiseless (unlike booster pumps at 50–70 dB), ideal for quiet homes or night-time use.
- Patented CAD2 Technology — Controlled Action Diaphragm prevents waterlogging, ensures even pressure delivery, and maximises usable volume (~65 L effective at typical 1.5 bar differential).
- Multi-Outlet Performance — Eliminates pressure drops during simultaneous use — showers stay powerful, taps fill fast, combis recover quickly.
- No Servicing Ever — No filters to clean, no seals to replace — fit and forget for 5+ years.
- Lightweight & Durable — Composite construction resists corrosion far better than steel vessels; easy retrofit or new-build install.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 11007350 |
| Total Vessel Volume | 130 litres |
| Usable Water Volume | ~65 litres (at 1.5 bar differential pressure) |
| Dimensions (Ø × Height) | 418 × 1227 mm |
| Empty Weight | 16 kg |
| Full Weight (approx.) | 81 kg |
| Connections | 1" BSP male × 28 mm compression |
| Max Working Pressure | 8.6 bar (860 kPa) |
| Pre-charge Pressure | 1.4 bar (factory — adjustable) |
| Max Boost Head (closed valve) | 4.3 bar |
| Water Temperature Range | 4 °C to 35 °C |
| Ambient Temperature Max | 40 °C |
| Membrane Material | Butyl rubber (WRAS 1501305) |
| Tank Construction | Continuous strand fibreglass + epoxy resin |
| Warranty | 5 years (vessel & diaphragm) |
What's in the Box
✅ Essential companion products: Upstream Kit 22/28 mm (11007380) for first unit + Add-on Kit (11007327) for each extra accumulator. For very low pressure (<2 bar dynamic), pair with SuperStream Charger Pump (11007348).
Frequently Asked Questions
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
OSO Acc130 SuperStream 130 L Accumulator — 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
Perfect 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.
The 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.
Thanks 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.
What Makes the SuperStream Acc130 Special?
- 100% Passive & Green — No pump, no power consumption, no CO₂ emissions, no electricity bills — truly sustainable boosting.
- Silent Operation — Completely noiseless (unlike booster pumps at 50–70 dB), ideal for quiet homes or night-time use.
- Patented CAD2 Technology — Controlled Action Diaphragm prevents waterlogging, ensures even pressure delivery, and maximises usable volume (~65 L effective at typical 1.5 bar differential).
- Multi-Outlet Performance — Eliminates pressure drops during simultaneous use — showers stay powerful, taps fill fast, combis recover quickly.
- No Servicing Ever — No filters to clean, no seals to replace — fit and forget for 5+ years.
- Lightweight & Durable — Composite construction resists corrosion far better than steel vessels; easy retrofit or new-build install.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 11007350 |
| Total Vessel Volume | 130 litres |
| Usable Water Volume | ~65 litres (at 1.5 bar differential pressure) |
| Dimensions (Ø × Height) | 418 × 1227 mm |
| Empty Weight | 16 kg |
| Full Weight (approx.) | 81 kg |
| Connections | 1" BSP male × 28 mm compression |
| Max Working Pressure | 8.6 bar (860 kPa) |
| Pre-charge Pressure | 1.4 bar (factory — adjustable) |
| Max Boost Head (closed valve) | 4.3 bar |
| Water Temperature Range | 4 °C to 35 °C |
| Ambient Temperature Max | 40 °C |
| Membrane Material | Butyl rubber (WRAS 1501305) |
| Tank Construction | Continuous strand fibreglass + epoxy resin |
| Warranty | 5 years (vessel & diaphragm) |
What's in the Box
✅ Essential companion products: Upstream Kit 22/28 mm (11007380) for first unit + Add-on Kit (11007327) for each extra accumulator. For very low pressure (<2 bar dynamic), pair with SuperStream Charger Pump (11007348).
