Reduced Female-Female PVC-U screw-in sleeve PN16: The high-pressure diameter adaptation

The reduced sleeve made of threaded PVC-U is the essential junction fitting for connecting two male elements of different diameters on the same axis. Designed to ensure a smooth transition between two sections of pressurized piping, this screw-in female-to-female (FF) model is certified to withstand a pressure rating of 16 bar (PN16). It offers a robust, secure and fully removable reduction solution, ideal for adapting your speed or connecting specific equipment to an existing network.

A structural transition for grids under pressure

The design of this reduced sleeve in PVC-U (unplasticized polyvinyl chloride) ensures maximum rigidity and resistance to mechanical stresses related to cross-section changes. Its PN16 certification makes it suitable for professional installations where reliability is critical. Unlike glue-on reducers, the screw-on threaded version allows you to change the configuration of your network or replace equipment (pump, filter, sensor) without having to cut the pipes, thus saving precious time during maintenance.

Modularity and versatility of gas tapping (BSP)

The screw-in female-to-female shrink sleeve is particularly appreciated for its ability to serve as an interface for adapting different threads:

• Simplified diameter adaptation: Allows a large diameter pipe or nipple to be connected to a smaller diameter equipment.

• Chemical and anti-corrosion resistance: Completely insensitive to limescale, chlorine and phytosanitary products, it is ideal for humid or aggressive environments.

• Disassembly: Essential for systems that require seasonal modifications, such as pumping stations or agricultural irrigation circuits.

Installation and sealing tips

For a perfectly watertight reduced connection under 16 bar of pressure, the rules of use of plastic plumbing must be respected:

1. Preparing the Male Threads: Use quality PTFE (Teflon) tape to line the two outer threads before mounting.

2. Axial alignment: Present the sleeve reduced well in the axis of the tubes to initiate the screwing by hand without forcing the threads.

3. Controlled tightening: PVC-U provides a compression seal. A firm manual tightening followed by a slight lock with the strap wrench is sufficient. Avoid metal wrenches with teeth that could mark the body of the fitting and create points of fragility.

Areas of application: Swimming pool, Watering and Industry

This reduced sleeve is a standard for adapting the outlets of swimming pool filtration pumps or UV clarifiers to the diameters of the main network. In the agricultural sector, it facilitates the assembly of irrigation manifolds and the integration of smaller shut-off valves. Its food neutrality and mechanical robustness also allow it to be used in industrial processes transporting process fluids or compatible chemicals requiring flow variations.

Technical characteristics