VIEGA Viega 3821 freestanding cylindrical tank, outer Ø 165 cm, inner Ø 100 cm, height 900 mm

VIEGA Viega 3821 is a freestanding cylindrical tank with an outer diameter of 165 cm, an inner diameter of 100 cm and a height of 900 mm. The tank is intended for situations that require a compact vertical storage vessel with a clearly defined internal volume and stable cylindrical structure. Constructed in two parts from plastic, the design provides straightforward installation and integration with standard WC connection components.

Advantages

The two-part plastic construction reduces weight while maintaining dimensional stability and resistance to corrosion. A clear marking for a 22.5° angle cut simplifies on-site adjustments and ensures accurate alignment with plumbing connections. The combination of outer and inner diameters gives a predictable internal volume suitable for installations that need a compact vertical footprint and reliable structural performance.

Suitable for

• Plumbing installations requiring a compact vertical storage vessel
• WC outlet and connection assemblies using WC connection elbow or WC connection pipe
• Industrial or utility installations where a defined internal volume and cylindrical shape are needed
• Sites where corrosion-resistant plastic components are preferred

Key specifications

• Outer diameter: 165 cm
• Inner diameter: 100 cm
• Height: 900 mm
• Material: plastic (two-part construction)
• Design: freestanding cylindrical tank
• Included marking: 22.5° angle cut guide
• Compatibility: designed for WC connection elbow and WC connection pipe

How to use

Position the freestanding tank on a level and stable surface capable of supporting the filled weight. Use the 22.5° marking to cut or align connection points where plumbing interfaces are required. Assemble the two parts according to the manufacturer’s assembly recommendations, ensuring sealing surfaces are clean and joints are secured. Connect to WC connection elbow or WC connection pipe as needed and verify alignment and seals before filling the tank or placing into service.

Usage recommendations

Inspect the plastic components for damage before installation and follow local plumbing codes for connections. Avoid exposure to concentrated solvents or temperatures outside the manufacturer’s specified range. Regularly check joints and seals for wear or leaks and perform maintenance as part of routine system inspections.