T-piece - pipe/pipe/tube/pipe - 20x20x20; PE FIV.07704

Product detailed description

Three-way fittings are essential components in pressurised fluid distribution systems where branching is required. This model is commonly used in residential and industrial plumbing, heating and irrigation networks to create T-junctions between polyethylene (PE) pipes. Installers often encounter such fittings when extending existing circuits, integrating new branches or balancing flow in multi-loop systems.

In applications involving medium-pressure water supply lines or underfloor heating loops, this fitting provides reliable mechanical and hydraulic continuity. Its compact design allows integration into tight spaces while maintaining accessibility for inspection and maintenance. The threaded connections ensure secure alignment and prevent leakage under normal operational conditions.

Technical parameters

Material	Brass body CW617N according to EN 12165
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	I07704012
Brand	IVAR

The nominal pressure rating PN 16 indicates suitability for systems operating up to 16 bar at reference temperatures. The specified minimum operating temperature of -20°C ensures functionality in cold environments, making it appropriate for external or unheated indoor installations. These parameters influence component selection based on system pressure class and environmental exposure.

Installation and connection

To install, align the threaded connections with corresponding PE pipe ends. Use a wrench to tighten the fittings evenly until hand-tight, then apply additional torque using standard tightening procedures for brass fittings. Verify alignment of all three branches to avoid stress on the joints. Common errors include cross-threading during assembly and uneven tightening causing misalignment. Always inspect the O-ring seating and clamping ring compression after installation to ensure leak-free performance.

Compatibility and accessories

This tee is designed specifically for PE pipes with equal internal diameters. Ensure that the PE pipes are compatible with the brass body material and that all sealing rings are correctly seated. For complete system integration, ensure that adjacent fittings and valves share the same pressure and temperature ratings. No additional products are recommended for standard installations.

Technical background for designers

The fitting functions by directing fluid through three aligned ports. The CW617N brass body offers high corrosion resistance and dimensional stability under thermal cycling. The NBR O-rings provide a flexible seal that adapts to minor surface irregularities while maintaining integrity over time. The mechanical strength of the brass housing supports the structural demands of a PN 16 system. Long-term efficiency depends on correct installation and absence of excessive vibration or mechanical stress in the pipeline.

Service and operation

Periodic visual inspections should focus on signs of leakage around the O-ring seals and general wear of the brass body. Ensure that all connections remain free of debris that could compromise sealing effectiveness. There are no scheduled service intervals specified in the documentation, but prompt replacement is advised upon detecting any physical damage or signs of degradation in the sealing elements.

Frequently asked questions

Can this fitting be used with PE pipes of different diameters?
No. The design is intended for equal-diameter PE pipes only. Using mismatched sizes can lead to improper sealing and reduced mechanical integrity.

Is this fitting suitable for outdoor installations exposed to freezing temperatures?
Yes, provided that the system contains non-freezing fluids and the operating conditions remain within the stated temperature range of -20°C to +90°C.

What sealing materials are used in this fitting?
The primary sealing is achieved with an NBR O-ring, while a brass clamping ring (CW614N) ensures secure pipe retention. An additional O-ring provides secondary sealing at the joint interface.

How does the CW617N brass affect the durability of the fitting?
CW617N is a lead-free brass with excellent machinability and corrosion resistance. It is well suited for long-term use in water-based systems and maintains structural integrity even after repeated thermal cycles.

Documents for download

• Declaration of Conformity - Czech (PDF)
• Declaration of Conformity - Slovak (PDF)
• Installation Instructions - Czech (PDF)
• Installation Instructions - Slovak (PDF)
• Technical Drawing - Slovak (PDF)