RECTUS connection fitting 3/4" x 13 mm model 13574

RECTUS connection fitting 3/4" x 13 mm model 13574 is a threaded coupling designed to join 3/4" threaded pipes to 13 mm tubing. Manufactured by RECTUS, this fitting creates a compact mechanical transition for fluid and pneumatic systems where a secure threaded-to-tube connection is required. The component is intended for installations such as plumbing, heating circuits, and compressed air lines, providing reliable coupling in confined spaces.

Advantages

The fitting offers a simple threaded interface for easy assembly with standard 3/4" pipe threads and a tailored connection for 13 mm tube, reducing the need for adapters. Its compact design saves space in densely packed installations and allows for straightforward integration into existing piping or tubing runs. The mechanical join provides a stable connection suitable for both fluid and pneumatic media when used according to system pressure and material compatibility.

Suitable for

• Plumbing installations that require a 3/4" to 13 mm transition
• Heating circuits and radiators where compact threaded connections are needed
• Compressed air systems with 13 mm tubing runs
• Repair or modification of existing pipe-to-tube connections

Key specifications

• Thread size: 3/4" (threaded coupling side)
• Tubing connection: 13 mm tube
• Model: RECTUS 13574
• Application domains: fluid lines, pneumatic lines, heating circuits
• Form factor: compact threaded-to-tube coupling

How to use

Prepare the mating 3/4" threaded pipe and the 13 mm tubing by ensuring they are clean, deburred and free of contaminants. Screw the fitting into the 3/4" threaded connection using appropriate sealing method for the system (for example, thread sealant tape or liquid sealant where applicable) and insert or secure the 13 mm tube according to the tube connection method required by the fitting design. Tighten to the recommended torque for the thread size and system materials to achieve a leak-free mechanical joint. Verify compatibility of the fitting materials with the conveyed medium and test the assembled connection under working pressure before putting the system into regular operation.

Usage recommendations

Use appropriate thread sealing products and follow system pressure ratings. Do not exceed the pressure and temperature limits of the tubing and the fitting materials. For gas or critical fluid applications, perform pressure testing and periodic inspection to ensure ongoing integrity of the connection.