UN adjustable elbow reducer DN 50/40 RN54 — pipe fitting, concentric reducer

Adjustable elbow reducer UN RN54 DN 50/40 is a concentric pipe fitting designed to join a 50 mm pipe to a 40 mm pipe while providing an angled elbow for directional change. The fitting combines a diameter reduction with an adjustable alignment feature to accommodate pipes that need precise positioning during installation. It is suitable for systems that carry liquids or gases and where a compact, angled transition between different diameters is required.

Advantages

The adjustable elbow reducer offers a compact solution for reducing pipe diameter while changing direction, reducing the need for multiple separate fittings. Its adjustable alignment reduces installation stress and simplifies positioning when connecting misaligned pipes. The concentric reducer profile maintains a centered flow path to minimize turbulence and support consistent fluid or gas movement through the transition.

Suitable for

• Plumbing systems where a reduction from 50 mm to 40 mm is required with an angle
• HVAC ducting and ventilation pipelines needing compact, angled connections
• Industrial piping where space constraints require combined reduction and elbow functions
• Repair and retrofit jobs where existing pipe runs require slight realignment

Key specifications

• Nominal diameters: 50 mm to 40 mm concentric reduction
• Type: adjustable elbow reducer (concentric)
• Function: diameter reduction combined with angled elbow and alignment adjustment
• Flow medium: suitable for liquids and gases
• Application areas: plumbing, HVAC, industrial piping

How to use

Install the adjustable elbow reducer by sliding the corresponding pipes into the 50 mm and 40 mm ends and securing them according to the piping system's joining method (e.g., solvent welding, mechanical coupling, or sealing with appropriate clamps and gaskets). Use the adjustment feature to align the connected pipes before final tightening to ensure correct orientation and avoid strain on joints. Verify seals and test the system for leaks after installation.

Usage recommendations

Confirm material compatibility with the medium in use and follow standard safety and installation practices for the piping system. Ensure correct joinery method for the pipe material, maintain accessible joints for inspection, and pressure-test the line where applicable.