T-piece - pipe/pipe/pipe - 40x40x40; PE FIV.07704

Product detailed description

This T-piece is used in residential and commercial heating and plumbing systems where three PE pipes of the same diameter need to be joined at a single point. It is commonly found in underfloor heating circuits, hot and cold water distribution systems, and in pressurised applications such as circulation loops. The design allows for straightforward installation in tight spaces and ensures a secure, leak-free connection without the need for additional tools beyond basic pipe-cutting and preparation equipment.

The fitting is suitable for both new installations and repairs in systems where flexibility and durability are required. It is particularly useful in applications involving polyethylene piping, which is known for its resistance to corrosion and chemical degradation. The T-piece can be integrated into systems operating within a wide temperature range, making it suitable for environments where thermal expansion and contraction are common.

Technical parameters

Material	Brass body CW617N according to EN 12165
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	I07704114
Brand	IVAR

Operating pressure and temperature parameters define the conditions under which the fitting maintains structural integrity and sealing effectiveness. The PN 16 rating indicates the maximum pressure the fitting can handle at reference temperature (typically 20°C). The operating temperature range from -20°C to +90°C means the fitting can be used in both cold and hot water systems. These parameters are essential for proper sizing and selection to ensure compatibility with the system’s hydraulic and thermal requirements.

Installation and connection

Installation begins with cutting the PE pipes cleanly and ensuring their ends are free of burrs and debris. The T-piece is designed for push-fit connection: the pipe is inserted into the fitting until it reaches the stop mark. The internal clamping ring and O-rings compress around the pipe to form a watertight seal. All three pipe connections follow the same procedure. After installation, the system should be tested for leaks under operational pressure. A common mistake is insufficient insertion depth, which can lead to leakage or disconnection under pressure. Installers should also ensure that the PE pipes are not bent or kinked before fitting.

Compatibility and accessories

This T-piece is specifically designed for equal-diameter PE pipes. It is compatible with standard PE pipe systems used in heating and plumbing applications. For larger systems or complex configurations, additional fittings such as elbows, couplings or valves may be needed. When planning the layout, ensure that all components are from the same system series to maintain consistent sealing properties and mechanical strength.

Technical background for designers

The T-piece operates using a mechanical compression system. The brass body houses a clamping ring and two O-rings made of NBR (nitrile rubber) and a STOP ring. The clamping ring compresses around the PE pipe when it is inserted, creating a secure mechanical and hydraulic seal. The brass material provides high resistance to corrosion and wear, while the O-rings ensure flexibility and adaptability to thermal expansion. The design integrates seamlessly into pressurised systems and is suitable for environments with fluctuating temperatures. Long-term performance depends on correct installation, system pressure and temperature conditions, and the quality of the PE pipes used.

Service and operation

No regular maintenance is required for this fitting during normal operation. However, it is advisable to inspect the connection points visually during routine system checks, especially after periods of high usage or temperature fluctuations. Any signs of leakage or deformation should be investigated immediately. If the fitting becomes damaged or fails, it should be replaced following the same installation procedure to restore system integrity.

Frequently asked questions

Can this T-piece be used with PE pipes of different diameters?
No. This T-piece is designed exclusively for connecting three PE pipes of the same diameter. Using pipes of different diameters will prevent a proper seal and may cause leakage or failure.

Is it possible to reuse the T-piece after disassembly?
It is not recommended. Once the fitting is removed or disassembled, the internal sealing elements may be compromised. Reuse could result in reduced sealing effectiveness and potential leaks.

Can the T-piece be used in underground installations?
Yes, provided the installation environment is suitable for the material and the system is protected against mechanical damage. The brass body and sealing elements are resistant to environmental factors typical in underground conditions.

What is the maximum operating temperature for this T-piece?
The fitting is rated for continuous operation up to +90°C. Exceeding this temperature may affect the sealing properties and reduce the service life of the component.