Single Male-Female PVC-U Screw-in Reduction PN16: The ultra-compact thread adapter

The single Male-Female PVC U threaded reducer, often referred to as a "bush" reducer, is the precision fitting designed to reduce the diameter of a thread with almost no footprint. Unlike the reduced sleeves, this MF model fits almost completely into the female receiver part. Certified to withstand a nominal pressure of 16 bar (PN16), it is the essential accessory for adapting pump outlets, filter housings or manifolds to a smaller diameter while maintaining an extremely compact installation.

A Robust Transition for Precision Hydraulic Systems

The manufacture of this simple reduction in PVC-U (unplasticized polyvinyl chloride) ensures maximum rigidity, which is essential to maintain the integrity of the thread under high pressure stresses. Its PN16 certification makes it suitable for professional pool, irrigation and water treatment installations. Thanks to its optimized design, it allows for an immediate diameter transition within the previous fitting, thus avoiding unnecessary elongation of pipe lines in tight spaces.

Gas Thread Modularity (BSP) and Chemical Resistance

The MF screw-in reduction ring is particularly popular for its ability to serve as a direct and discreet adaptation interface:

• Minimal Footprint: The male part screws into the main element, often leaving only the hexagonal flange visible for tightening.

• Anti-corrosion resistance: Completely insensitive to limescale, salt and chemicals (chlorine, fertilisers), it offers a durable and economical alternative to brass or stainless steel reductions.

• Versatility: Allows accessories (pressure gauges, probes, bleed valves) to be mounted on larger gauge piping with remarkable ease of installation.

Installation and professional sealing advice

To guarantee a PN16 performance without any leaks, the installation of this reduction must be carried out with care to ensure the continuity of the seal:

1. Preparing the male thread: Fill the outer thread with PTFE (Teflon) tape evenly before insertion.

2. Installation: Screw the reducer into the receiving threaded element by hand to engage the threads securely.

3. Final tightening: Use a suitable open-end wrench on the hex head of the fitting. A firm clamp is enough to crush the Teflon and ensure a tight seal. Once the ring is in place, do the same for the smaller diameter element that will be housed in the female part of the reduction.

Areas of application: Swimming pool, Watering and Industry

This simple reduction is a standard for the adaptation of filter pump ports and booster tanks. In the agricultural irrigation sector, it allows spray heads or drip connections to be attached directly to large diameter tees or bends. Its sanitary neutrality and mechanical strength also make it an ideal component for industrial installations requiring tapping points for measuring instruments on aggressive fluid circuits.

Technical characteristics