Black Malleable Cast Iron Reduced Sleeve | F/F EN 10242 for Piping

The Reduced Sleeve: the ideal solution for connecting different diameters

The Black Core Malleable Cast Iron Sleeve is an essential item for professionals looking to connect two tubes of different diameters. This female/female connection makes it possible to make a solid and perfectly sealed connection between pipes of different sizes. Its rugged design is ideally suited for the distribution of water, gases, steam, and non-corrosive liquids or gases, especially in HVAC systems. Its black finish gives it a sought-after industrial look, ideal for surface-mounted installations and decoration projects.

High-precision manufacturing guaranteeing industrial quality

The design of this sleeve is the result of recognized expertise, complying with the European standards EN 10242 and ISO 49. The material used is a malleable cast iron EN-GJMB-350-10 (according to the EN 1562 standard), chosen for its mechanical strength and exceptional durability. The black finish, applied with a thickness of 70 μm, provides a discreet protective layer against corrosion, while maintaining the authentic character of the product. This rigour in manufacturing ensures a fitting capable of withstanding the stresses of industrial and domestic environments.

Sealing at the heart of the connection: the strength of the EN 10242 standard

The effectiveness of this sleeve is based on the quality of its thread, which strictly complies with the international standard ISO 7-1 (BSPT). This compliance ensures perfect compatibility and fit with threaded hoses, especially thanks to the two cylindrical (Rp) female ends. For optimal safety, 100% of the fittings are leak-tested before they are put into circulation. In addition, the requirements of EN 10242 apply even to loose nuts (if present on other fittings in the range), ensuring maximum versatility and reliability throughout your installations.

Areas of application: uncompromising versatility

This black-cored, malleable cast iron sleeve is suitable for a wide range of projects:

• Fluid Networks and HVAC: It is essential for adapting diameters in heating circuits, ventilation and air conditioning systems.

• Energy and Steam Distribution: Its robustness allows it to be used for gases, steam and non-corrosive industrial liquids.

• Industry and Workshop: Ideal for modifying or extending compressed air or oil networks with different sizes of hoses.

• Interior Design and Architecture: The sleeve is a fundamental part for the assembly of decorative structures (shelves, lighting) in the industrial or vintage style where a visible reduction in diameters is desired.

Optimization of installation and maintenance

The installation of this sleeve is simple, using traditional sealing methods. The use of the right sealing (filasse, joint paste or PTFE) is crucial to ensure long-term performance. Its simple design allows for easy maintenance. By choosing this reduced sleeve, you are investing in a solution that centralizes and makes your diameter changes more reliable, offering you a durable junction that complies with the most stringent technical requirements.