400 Litre Underground Tank V1

The 400 Litre Underground Water Tank V1 is a compact, slimline water storage solution designed for tight installation spaces. Manufactured in the UK from strong virgin MDPE using a one-piece mould for outstanding durability, this underground tank is perfect for domestic and commercial applications where discreet water storage is required. It features two 4" connections for easy integration with standard UK underground pipework, making it ideal for rainwater harvesting, garden irrigation and external pump setups. With a push-down lid for convenient access and a pre-moulded 1" BSP outlet, this tank is built for long-lasting performance, reliability and ease of use.

Technical Specification

• Capacity: 400 litres
• Height: 1500mm
• Length: 1240mm
• Width: 345mm
• Weight: 35kg
• Material: MDPE (Medium Density Polyethylene)
• Access: 12" push-down lid
• Inlets/Outlets: Two 4" connections
• Outlet: 1" BSP
• Construction: One-piece rotationally moulded virgin polymer
• Warranty: 10-year manufacturing defect warranty
• Application: Underground installation, compatible with 4" (110mm) UK pipe fittings