🚰 Nibe 424474 Tundish (22mm to 15mm)

Safety-compliant tundish designed to protect potable water supplies by providing a visible air gap between the discharge pipe (typically from a safety valve) and the drainage system. Fully compliant with G3 Building Regulations for unvented hot water systems.

🔧 Product Details:

• Nibe Part Number: 424474

• Connection Size: 22mm inlet → 15mm outlet

• Function: Air gap to prevent cross-contamination between overflow and drain

• Material: Durable, heat- and pressure-resistant plastic

• Orientation: Inline, visible discharge

✅ Key Applications:

• Used on temperature and pressure relief valves (T&P valves)

• Ensures visual discharge alert in the event of system venting

• Ideal for unvented cylinders, heat pump buffer tanks, or any sealed system where overflows must be visibly and safely managed

🧯 Compliance & Regulations:

• Conforms with G3 Building Regulations (UK)

• Required on unvented hot water installations

• Supports inspection, traceability, and protection of drainage systems from backflow or contamination