The Story
OSO Add On 130 Kit (11007328) — Dedicated expansion fitting kit for adding extra Acc130 SuperStream accumulators only | Includes size-specific vessel connector, isolation valve & brass fittings | Enables parallel connection & 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
If 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).
The 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.
After 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.
This 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).
What Makes the OSO Add On 130 Kit Special?
- Acc130-Optimised Design — Connector and fittings sized precisely for the 130 L model — guaranteed perfect fit & performance.
- Individual Isolation — Full-bore ball valve allows servicing or draining one Acc130 without affecting others in the array.
- WRAS-Compliant Brass — All components approved for drinking water — safe, reliable & regulation-compliant.
- Cost-Effective Acc130 Scaling — Add capacity in smaller 130 L increments without buying a second full Upstream Kit.
- Parallel Array Ready — Enables high-flow multi-Acc130 systems (e.g. 2–4 units) for even distribution or space-limited installs.
- Simple & Secure Connection — Brass fittings ensure durable, leak-free parallel linking every time.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 11007328 |
| Compatibility | Extra Acc130 SuperStream accumulators only |
| Quantity Required | One per additional Acc130 (after first with Upstream Kit) |
| Materials | High-quality brass (WRAS-approved) |
| Included Components | Acc130-specific vessel connector, isolation ball valve, brass bush/adapters |
| Max Pressure | 10 bar (matches accumulator rating) |
| Compliance | WRAS, Water Supply Regulations (UK) |
What's in the Box
✅ 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.
Frequently Asked Questions
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
OSO Add On 130 Kit (11007328) — Dedicated expansion fitting kit for adding extra Acc130 SuperStream accumulators only | Includes size-specific vessel connector, isolation valve & brass fittings | Enables parallel connection & 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
If 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).
The 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.
After 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.
This 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).
What Makes the OSO Add On 130 Kit Special?
- Acc130-Optimised Design — Connector and fittings sized precisely for the 130 L model — guaranteed perfect fit & performance.
- Individual Isolation — Full-bore ball valve allows servicing or draining one Acc130 without affecting others in the array.
- WRAS-Compliant Brass — All components approved for drinking water — safe, reliable & regulation-compliant.
- Cost-Effective Acc130 Scaling — Add capacity in smaller 130 L increments without buying a second full Upstream Kit.
- Parallel Array Ready — Enables high-flow multi-Acc130 systems (e.g. 2–4 units) for even distribution or space-limited installs.
- Simple & Secure Connection — Brass fittings ensure durable, leak-free parallel linking every time.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 11007328 |
| Compatibility | Extra Acc130 SuperStream accumulators only |
| Quantity Required | One per additional Acc130 (after first with Upstream Kit) |
| Materials | High-quality brass (WRAS-approved) |
| Included Components | Acc130-specific vessel connector, isolation ball valve, brass bush/adapters |
| Max Pressure | 10 bar (matches accumulator rating) |
| Compliance | WRAS, Water Supply Regulations (UK) |
What's in the Box
✅ 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.
