Alkotest K4540 elbow pipe 45° with 40 mm flange (KOLANO 45 FI40)

Alkotest K4540 elbow pipe 45° with 40 mm flange (KOLANO 45 FI40) is a pipe fitting engineered to change the flow direction by 45 degrees in fluid, ventilation or duct systems. The component features a 40 mm flange connection that enables a compact flange-mounted joint between straight runs or other components. Constructed for installations where a low-profile angled connection is required, this elbow is suitable for plumbing, HVAC and light industrial ductwork where reliable directional change and secure flange attachment are needed.

Advantages

The 45° geometry provides a smooth change of direction that minimizes flow disturbance compared with sharper angles. The integrated 40 mm flange simplifies assembly and alignment when joining to matching flange fittings or equipment. Its compact form factor is designed to fit into confined spaces while maintaining a consistent internal passage for fluid or air. The product is compatible with common piping and ducting arrangements that accept a 40 mm flange connection.

Suitable for

• Plumbing systems requiring a 45° directional change with flange connection
• HVAC ducting for air distribution in compact layouts
• Industrial ventilation where flange-mounted joints are preferred
• Retrofit installations needing a low-profile angled flange fitting

Key specifications

• Angle: 45° elbow
• Flange diameter: 40 mm flange connection
• Application: fluid, ventilation and duct systems
• Mounting: flange-mounted joint for quick alignment
• Design: compact angled fitting suitable for confined spaces

How to use

Install the elbow by aligning the 40 mm flange with the matching flange on the adjoining pipe or component, ensuring sealing elements such as gaskets are correctly positioned if required. Secure the flange connection using the appropriate fasteners and torque according to the installation standards for the system. Verify the internal passage is unobstructed and test the assembly under operating conditions to confirm there are no leaks and the directional change performs as intended.

Usage recommendations

When installing into plumbing or HVAC systems, check material compatibility with the transported medium and operating temperature. Use suitable gaskets and corrosion-resistant fasteners where exposure to moisture or aggressive fluids is expected. For airtight ventilation runs, ensure flange joints are sealed and supported to prevent strain on the connection.