Compression Elbow Comap 18 mm — model 18 JEVCOJ512, brass plumbing fitting, for copper/polyethylene pipes

The Comap Compression Elbow 18 mm (model 18 JEVCOJ512) is a 90° brass plumbing fitting designed for use with 18 mm copper and polyethylene (PE) pipes. It creates a sealed directional change in potable water and heating systems, offering a compact connection point where space is limited or where a pipe run must change direction. The fitting is intended for residential and light commercial plumbing repairs and installations and is manufactured in brass for mechanical strength and corrosion resistance.

Advantages

This compression elbow provides a reliable mechanical seal without the need for soldering or specialized joining equipment, simplifying installation and reducing the time required for on-site work. The brass construction offers durability and resistance to corrosion in typical domestic water and heating environments. The fitting is compatible with common 18 mm copper and PE pipe materials, enabling flexible use across different plumbing systems while maintaining a compact 90° change of direction.

Suitable for

• Domestic potable water supply lines with 18 mm copper or polyethylene pipe
• Central heating and radiator feed lines in residential buildings
• Repair and retrofit jobs where a non-soldered 90° connection is preferred
• Compact installations behind appliances, inside cabinets, or in service ducts

Key specifications

• Material: Brass body with compression connection components
• Connection type: Compression joint suitable for 18 mm pipe
• Angle: 90° elbow
• Compatible pipe types: Copper and polyethylene (PE) pipes with 18 mm outer diameter
• Intended applications: Potable water supply and heating systems

How to use

Confirm pipe compatibility and ensure pipe ends are clean, straight and free of burrs. Slide the compression nut and olive (ferrule) onto the pipe, insert the pipe fully into the elbow body until it seats, then hand-tighten the compression nut. Securely tighten the nut with an appropriate wrench to the manufacturer-recommended torque or until a firm mechanical seal is achieved, taking care not to overtighten and deform the pipe or ferrule. After installation, pressurize the system and inspect the joint for leaks, retightening slightly if necessary according to standard plumbing practice.

Usage recommendations

Use with clean, correctly sized 18 mm copper or PE piping and replace olives/ferrules if damaged; avoid excessive tightening to prevent deformation. For installations in concealed or pressurized systems, follow local plumbing codes and perform pressure testing after fitting to confirm a leak-free connection.