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💧 Keep your water heater pressure-perfect and worry-free!
This Set of 2L Expansion Vessel and Non-Return Valve from Ariston is engineered to protect closed water heating systems by managing excessive pressure and preventing backflow. Fully UKCA certified and crafted from durable alloy steel, it’s optimized for seamless integration with Ariston Andris water heaters, ensuring reliable, long-term performance in UK homes.

| ASIN | B003ITQXFG |
| Best Sellers Rank | 121,933 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,098 in Central Heating System Accessories |
| Brand | Ariston |
| Connector Type | BSPT, Female Iron Pipe |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.3 4.3 out of 5 stars (63) |
| Exterior Finish | Stainless Steel |
| Included Components | 2L expansion vessel, non-return valve |
| Inlet Connection Size | 1 Inches |
| Inlet Connection Type | Female Iron Pipe |
| Item Dimensions | 12.5 x 12.5 x 23.7 centimetres |
| Item Type Name | KIT A 2L EXPANSION VESSEL & NON-RETURN VALVE |
| Item Weight | 1.02 Kilograms |
| Manufacturer | Ariston |
| Material | Metal |
| Model Number | 406801 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 2 |
| Number of Ports | 2 |
| Outlet Connection Type | BSPT |
| Part Number | 406801 |
| Set Name | KIT A 2L EXPANSION VESSEL & NON-RETURN VALVE |
| Size | 12.5 cm x 12.5 cm x 23.7 cm |
| Thread Size | 1/2" (12.7mm) |
| Thread Type | Iron Female Thread |
| Unit Count | 2.0 count |
| Valve Type | Swing Check Valve |
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