Pipe clamp Niczuk Obejma DUO 3 BK (85–91) for 85–91 mm pipes

Niczuk Obejma DUO 3 BK (85–91) is a metal pipe clamp engineered to secure round pipes with diameters from 85 to 91 mm. Designed for plumbing, HVAC and drainage systems, the clamp features a DUO profile that ensures stable mechanical fastening and controlled grip around the pipe circumference. The product is suitable for mounting to walls, ceilings or structural supports to create neat, fixed pipe runs in both residential and commercial installations.

Advantages

The DUO profile provides even pressure distribution and reduces point loads on the pipe surface, helping to maintain alignment and prevent localized deformation. The clamp’s construction enables straightforward installation and a secure hold under normal operating conditions. Its dimensions accommodate a tolerance range, allowing reliable fit for pipes within the 85–91 mm diameter range. The clamp is compatible with standard mounting hardware for rapid integration into existing support systems.

Suitable for

• Securing 85–91 mm drainage and sewer pipes
• Fixing HVAC ducts and ventilation pipes of corresponding diameter
• Plumbing installations in residential and commercial buildings
• Mounting pipe runs to walls, ceilings and metal supports

Key specifications

• Pipe diameter range: 85–91 mm
• Type: DUO-profile pipe clamp
• Material: metal construction suitable for mechanical fastening (coating/finish dependent on manufacturer)
• Mounting: designed for attachment to walls, ceilings or structural supports using standard fasteners
• Application areas: plumbing, HVAC, drainage

How to use

Place the clamp around the pipe ensuring the pipe sits evenly in the DUO profile. Align the clamp at the chosen mounting location and mark fastener positions on the support surface. Secure the clamp to the support using appropriate anchors or screws for the substrate and load conditions. Tighten the clamp fasteners to achieve a secure hold without over-compressing the pipe; follow pipe manufacturer recommendations for allowable clamping pressure where applicable. Install additional clamps at recommended intervals to prevent sagging and maintain alignment along the pipe run.

Usage recommendations

Use corrosion-resistant fasteners and, where necessary, choose compatible coatings or isolation materials to prevent galvanic reaction between dissimilar metals. Verify the recommended spacing between clamps based on pipe material and operating conditions, and always follow local codes and manufacturer guidance for safe and compliant installation.