


This Equal Male/Female (M/F) sleeve is the key element to extend a plumbing line while making a gender transition of threads without changing the nominal diameter. Made of CW617N Brass, it ensures exceptional resistance to corrosion and is Certified by the decree of 29 May 1997, guaranteeing its safe use in drinking water networks. The fitting uses the standard ISO 228-1 "G" thread (BSPP Gas Series) and maintains a Pressure Rating of 16 Bar. Its engineered design includes retaining plates for precise clamping and wide, flat joint spans for reliable flat seal sealing. It is the indispensable tool in general plumbing, offering a robust solution for line extension and component adaptation.
In the construction or modification of fluid networks, it is often necessary to extend a line while changing from a male thread to a female thread, or vice versa, without changing the diameter. The Male/Female Equal Sleeve is the professional solution that ensures this crucial transition with maximum reliability and sealing. Unlike reduction fittings, this sleeve maintains the same diameter, acting as an extender and gender adapter simultaneously. With our expertise in high-end fittings, we offer you a forged brass part designed for long-lasting performance under pressure, a guarantee of safety for all your plumbing and drinking water installations.
The reliability of an installation starts with first-class materials. This equal sleeve is made of CW617N Brass, an exceptional alloy, known for its excellent corrosion resistance and structural longevity. The use of this high-quality brass is essential as it allows the fitting to withstand a Pressure Rating (PN) of 16 Bar consistently. In addition, for sanitary applications, the sleeve complies with the amended decree of 29 May 1997 relating to products in contact with water intended for human consumption. This official certification is a major selling point for professionals concerned about hygiene standards and the potability of the networks they install.
The design of this fitting has been optimised for a quick and efficient implementation, typical of professional standards.
Standardised connection: The sleeve uses the ISO 228-1 universal parallel "G" thread (BSPP Gas series). This standard guarantees extensive compatibility with a wide range of tubes, valves, and other fittings on the market.
Integrated Clamping Plates: Retaining plates are cleverly machined on the fitting body. These zones provide a perfect grip for the wrenches, allowing installers to apply the necessary torque without damaging the workpiece, ensuring an optimal initial seal.
Guaranteed Joint Scopes: The sleeve features flat, wide joint spans on its male and female end caps. This technical specificity is the key to waterproofing: it guarantees uniform compression of the flat gasket (from 1 mm thick), ensuring a reliable and leak-free connection in the long term.
The versatility of this equal sleeve allows it to be integrated into various thermal environments, from cold water networks to heating circuits. The temperature resistance of the fitting is intrinsically linked to the type of sealant used by the professional.
Adaptability: Whether you use PTFE tape for secondary tightening, an elastomeric gasket for common networks, a fiber gasket for high-temperature applications, or a specific adhesive/sealant , the sleeve fits.
This flexibility makes it possible to maintain optimal performance (PN 16 Bar) while meeting the specific thermal constraints of the fluid being transported.
The Male/Female Equal Sleeve is a fundamental fitting for professionals who are looking to modulate the nature of their threads without changing their nominal diameter.
Concrete examples of use:
Change of Gender: Connect an existing male threaded line to a component that requires a male input. The sleeve allows an existing male thread (female side of the sleeve) to be connected to a new male threaded component (male side of the sleeve).
Line Extension: Serve as an extension to increase the length of the installation while providing a transition between a female and a male element in line (for example, between a female threaded tube and a female inlet valve or valve).
Equipment Connection: Use the part to connect specific equipment (valves, filters) with opposite types of inlet and outlet ports.
Simplicity of Editing: Provide an easier assembly solution in tight spaces by avoiding the complex use of two separate fittings.
| Characteristics | Specifications |
| Product Name | Male/Female Equal Sleeve (M/F) |
| Usage | General plumbing, drinking water systems |
| Body Matter | CW617N Brass |
| Maximum Pressure | PN 16 Bar |
| Connection | "G" ISO 228-1 (BSPP – Gas Series) |
| Manufacturing Method | Forged and machined or turned |
| Recommended Waterproofing | By flat joint (wide and flat seats) |
| Max. Temperature | Depends on the gasket selected |
| Regulatory Compliance | Decree of 29 May 1997 as amended (Drinking Water) |
| Combinations | Diameter | Reference | Stock | Price | Add to cart |
Diameter : 1/4'' Reference : 1281-14 | 1/4'' | 1281-14 | Available now Stock : 19 | €1.34 TTC | €1.34 TTC |
Diameter : 1/2'' Reference : 1281-12 | 1/2'' | 1281-12 | Available now Stock : 6 | €1.71 TTC | €1.71 TTC |
Diameter : 3/8'' Reference : 1281-38 | 3/8'' | 1281-38 | Available now Stock : 10 | €1.55 TTC | €1.55 TTC |
Diameter : 3/4'' Reference : 1281-34 | 3/4'' | 1281-34 | Available now Stock : 12 | €2.62 TTC | €2.62 TTC |
Diameter : 1'' Reference : 1281-1 | 1'' | 1281-1 | Available now Stock : 11 | €4.61 TTC | €4.61 TTC |
Diameter : 1''1/4 Reference : 1281-114 | 1''1/4 | 1281-114 | Available now Stock : 5 | €8.27 TTC | €8.27 TTC |
Diameter : 1''1/2 Reference : 1281-112 | 1''1/2 | 1281-112 | Available now Stock : 2 | €11.84 TTC | €11.84 TTC |
Diameter : 2'' Reference : 1281-2 | 2'' | 1281-2 | Available now Stock : 3 | €19.03 TTC | €19.03 TTC |
Diameter : 1/8'' Reference : 1281-18 | 1/8'' | 1281-18 | Available now Stock : 17 | €1.55 TTC | €1.55 TTC |