Screwed coupling 16x16 with fitting

Product detailed description

This screwed coupling is commonly used in residential and commercial buildings for water supply and heating systems. It is suitable for underfloor heating, radiator circuits and potable water distribution. Installers and technicians working with plastic-metal piping systems will find this coupling ideal for connecting PEX-AL-PEX or similar composite pipes without the need for crimping tools. The coupling is manually tightened using a wrench and is compatible with a range of pipe types and fittings.

The coupling is particularly useful in systems where crimping equipment is not available or where a simpler mechanical connection is preferred. It ensures a secure and leak-free connection in low-pressure environments. The design is suitable for both new installations and repairs, and it integrates well with existing plumbing and heating systems. The threaded connection allows for easy assembly and disassembly, making it a practical choice for maintenance and adjustments.

Technical parameters

Material of nut and body	Tinned brass
Material of washer	Teflon
Material of clamping ring	Brass
Maximum continuous temperature	95°C
Maximum continuous pressure	10 bar
Recommended pipe	PEX-AL-PEX pipe 16 x 2
Recommended manifolds	Stainless steel manifolds
Number of sealing rubber rings	2
Application	Underfloor heating, potable water distribution, radiator circuits
For pipe size	16x2 mm
Dimensions and thread of the coupling	16x16 with threading
Packing method	Loose
Tightening method	Using a wrench
Sealing	EPDM
Compatible pipe types	PEX-AL-PEX, PE-RT-AL-PE-RT, PERT Frankische, Giacomini, Barbi, HPW, Viessmann and others
Suitable for gas	No
Country of origin	EU
EAN	5900308748381
Weight	0.1 kg
Code	PEX.Z16
Brand	Hydroland

The maximum continuous operating temperature of 95°C and pressure of 10 bar indicate that this coupling is suitable for standard domestic water and heating applications. The use of EPDM seals and brass components ensures good resistance to corrosion and thermal expansion. These parameters are essential for determining compatibility with the system’s operating conditions and for selecting the correct coupling for the intended application.

Installation and connection

To install the coupling, first ensure the pipe ends are clean and free from debris. Apply a small amount of lubricant to the threads if required. Insert the pipe into the coupling and align the threads. Tighten the coupling using a wrench or spanner until it is secure. It is important to avoid over-tightening, which can damage the sealing rings or the pipe. Check that the connection is leak-free after tightening. Common mistakes include misalignment of the threads, insufficient tightening, or using the wrong type of wrench, which can strip the threads.

Compatibility and accessories

This coupling is compatible with PEX-AL-PEX, PE-RT-AL-PE-RT and other composite pipes with a 16x2 mm cross-section. It is recommended to use stainless steel manifolds for optimal performance. Additional components such as pipe cutters, deburring tools and sealing tape may be required for installation. A related product is the Screwed coupling 1/2x16 with external thread, which can be used in systems requiring a different connection size.

Technical background for designers

This coupling operates by mechanically securing the pipe within the fitting using a threaded connection. The brass body and brass ring provide structural integrity, while the EPDM and Teflon seals ensure a watertight connection. The use of brass components ensures good thermal conductivity and resistance to corrosion. The coupling is designed to accommodate thermal expansion and contraction of the pipe, which is important for long-term performance. The choice of materials and design ensures compatibility with a wide range of pipe types and systems, making it a versatile solution for various applications.

Service and operation

Regular inspection of the coupling is recommended to ensure there are no signs of leakage or wear. If a leak is detected, the coupling should be disassembled and the sealing rings inspected for damage. The EPDM and Teflon seals should be replaced if they show signs of degradation. No specific service intervals are provided, but it is advisable to check the coupling during routine system maintenance. The coupling does not require any special cleaning or lubrication during normal operation.

Frequently asked questions

Can this coupling be used with PE-RT-AL-PE-RT pipe?
Yes, the coupling is compatible with PE-RT-AL-PE-RT pipe as well as other composite pipe types such as PEX-AL-PEX.

Is it possible to use this coupling in a gas system?
No, the coupling is not suitable for gas applications. It is designed exclusively for water and heating systems.

Can the coupling be tightened using a standard wrench?
Yes, the coupling can be tightened using a standard wrench or spanner. It is important to avoid over-tightening to prevent damage to the sealing rings.

How many sealing rings are included in the coupling?
The coupling includes two sealing rings to ensure a watertight connection between the pipe and the fitting.

Documents for download

• Hygienically certified brass fittings for PEX-AL-PEX system (PDF)