Compression straight coupling Comap 7243GW40114 — external thread 40x3.5 to 1¼"

Straight compression coupling Comap 7243GW40114 provides a transition from a 40x3.5 press-fit connection to a 1¼" external thread. The coupling is designed to form a sealed mechanical joint between a pipe with a press-fit end and a threaded fitting, enabling reliable connections in plumbing and heating systems. It is suitable for potable water installations, heating circuits and general maintenance where a press-to-thread adapter is required.

Advantages

The compression straight coupling offers a compact solution for connecting press-fit piping to threaded components without soldering or welding. Its design ensures a secure, leak-resistant joint under normal operating pressures typical for domestic water and heating systems. The adapter reduces installation time compared with traditional methods and is compatible with commonly used press-fit pipe materials.

Suitable for

• Connecting press-fit copper or multilayer pipes to 1¼" threaded valves and fittings
• Repairs and alterations in potable water supply systems
• Heating circuits and radiator connections requiring a press-to-thread transition
• Plumbing maintenance where a reliable mechanical seal is needed without brazing

Key specifications

• Connection type: straight compression coupling — press-fit to external thread
• Press-fit end size: 40 x 3.5 mm
• Thread: external 1¼"
• Material: suitable for potable water and heating system use (metal construction compatible with press systems)
• Application: potable water, heating circuits, general plumbing

How to use

Prepare the pipe by cutting squarely and deburring the press-fit end to ensure a clean surface. Insert the pipe into the press-fit end until it reaches the stop, then crimp using the appropriate press tool and jaw for a 40 x 3.5 connection following the press system manufacturer's instructions. Apply suitable thread sealant or tape to the external 1¼" thread as required by the receiving fitting, and tighten the threaded connection to the specified torque for the application. After installation, perform pressure and leak tests in accordance with local standards.

Usage recommendations

Use the correct press tool and jaws specified for 40 x 3.5 press connections and follow manufacturer guidance for pressure testing. Ensure compatible materials for the pipe and fittings and avoid exceeding the system's rated temperature and pressure limits to maintain a durable, leak-free connection.