Adapter with loose nut for valve 42xG 1 3/4" bronze B Press P4355 04214000

Application and Construction of the Press Fitting Adapter

This component connects copper piping systems to valves or fittings with external threads, which is crucial in sanitary and heating installations. The primary function of this adapter is to transition from a pipe with an outer diameter of 42 mm to a nominal thread size of 1 3/4 inches. Thanks to the use of a loose nut (so-called "dado folle"), installation becomes significantly simpler and more flexible. This nut allows for easy compression of the seal into the valve socket without the need to tighten the entire press fitting sleeve, saving the installer time and reducing the risk of thread damage during work.

The material of manufacture is high-quality bronze CuSn5Zn5Pb2-C (CC499K-DW), characterized by excellent corrosion resistance and durability in water environments. The connection to the copper pipe is achieved via a press fitting sleeve, eliminating the need for soldering or brazing. This system is based on the pressing principle, ensuring mechanical tightness without the risk of material overheating or soldering defects.

Benefits for Installation and Assembly

Choosing this specific model brings concrete practical benefits on-site:

• Fast installation: The loose nut enables quick connection to valves even in hard-to-reach locations where rotating the entire component would be impossible.
• Connection versatility: It perfectly matches copper pipes with a 42 mm diameter to standard valves with a 1 3/4" thread, a common requirement in main connections or large industrial installations.
• Material durability: The bronze used in production (compliant with standard PN EN 1982) guarantees longevity in circuits with potable water and process water, being more resistant than some other non-ferrous metal alloys.
• Connection safety: The pressing system ensures constant clamping force, independent of the nut tightening torque, minimizing the risk of leaks resulting from human error during assembly.

It is worth noting that the fitting is marked with the symbol "B", indicating its belonging to the B Press series – a system dedicated to professional installations requiring fast and reliable assembly.

Compliance with Standards and Operating Conditions

The product has been manufactured in accordance with strict European standards, confirming its quality and safety of use. The base material is bronze CuSn5Zn5Pb2-C (CC499K-DW) compliant with standard PN EN 1982, while the design features a press fitting sleeve on the pipe side and a coupling nut on the fitting side. Thanks to precise machining and high purity of the bronze alloy, the adapter maintains its properties even at higher operating temperatures typical for heating systems. This is a solution dedicated to installers seeking reliable components for connecting copper pipelines with a 42 mm diameter to threaded fittings of 1 3/4" without the need for additional reducing adapters.