Screwed wall plate 1/2 x 16 for water

Product detailed description

Threaded wall plates are commonly used in residential and commercial buildings for connecting plastic-metal composite pipes to threaded fittings in wet systems such as central heating, domestic hot and cold water distribution, and underfloor heating circuits. Installers working on retrofitting older systems or installing new radiant floor systems often use these fittings when replacing or extending existing pipe runs. In these applications, the fitting ensures secure mechanical connection while maintaining hydraulic integrity. The absence of crimping requirements simplifies installation, especially in tight spaces or when retrofitting where access to crimping pliers may be limited.

The fitting is particularly useful in scenarios involving multiple branch connections in underfloor heating manifolds, where quick and reliable assembly is essential. It can also be integrated into split systems, allowing for modular expansion without the need for additional tools. Due to the widespread use of PEX-AL-PEX and similar pipe types in modern plumbing and heating systems, this threaded wall plate serves as a versatile solution for both new builds and renovations.

Technical parameters

Material of nut and body	Tinned brass
Material of washer	Teflon
Material of fixing 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 O-rings	2
Application	Underfloor heating, potable water distribution, radiator circuits
For pipe size	16x2 mm
Dimensions and thread	Skrutkovaná nástenka 1/2x16 na vodu
Packaging method	Loose
Tightening method	With a spanner
Sealing material	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	5900308747889
Weight	0.1 kg
Code	PEX.K.GW16X1/2N

Installation and connection

To connect the pipe, first ensure the pipe end is clean and free from burrs. Insert the PEX-AL-PEX pipe through the fixing ring and into the body until it reaches the stop. Place the teflon washer over the pipe, followed by the EPDM sealing rings. Thread the fitting onto the 1/2 inch male pipe thread using a wrench or spanner, tightening until hand-tight then giving one final quarter turn. Avoid over-tightening to prevent damage to the sealing rings. When selecting the fitting, verify that the pipe size matches the specified 16 x 2 mm dimensions. Check that the pipe is compatible with the listed composite types such as PERT, PEX-AL-PEX or other manufacturers' products. Common installation errors include using incorrect pipe sizes, skipping the sealing rings, or applying excessive torque during tightening. Always confirm that the system is drained and depressurised before starting the installation.

Compatibility and accessories

The fitting is designed to work with PEX-AL-PEX, PE-RT-AL-PE-RT, and other composite pipes as specified. It is recommended to pair it with stainless steel manifolds for optimal durability and corrosion resistance. Additional components such as fixing brackets and manifold adapters may be required depending on the specific installation layout. A related product, the Universal Wall Plate Bracket Double, provides support for multiple wall plates in multi-branch configurations.

Technical background for designers

The operating principle of the threaded wall plate relies on the mechanical compression of the sealing rings against the outer surface of the pipe, creating a leak-proof seal. The tinned brass construction resists oxidation and maintains structural integrity in wet environments. The EPDM sealing rings offer flexibility and resilience to thermal cycling, ensuring long-term performance in hot and cold water applications. When integrated into a larger system, the fitting contributes to the overall reliability of the distribution network by minimising points of potential leakage. Longevity is influenced by the quality of the pipe material, correct installation practices and regular inspection for signs of wear or degradation.

Service and operation

During routine maintenance, inspect the fitting for signs of leakage, corrosion or wear around the sealing areas. Ensure that all connections remain tight and that the pipe remains properly supported to avoid stress on the joint. There are no scheduled service intervals for this fitting unless system performance indicates the need for inspection. In the event of suspected failure, isolate the affected section and replace the fitting if necessary.

Frequently asked questions

Can the fitting be used with PE-RT-AL-PE-RT pipe?
Yes, it is compatible with PE-RT-AL-PE-RT pipe according to the manufacturer's specifications.

Can it be used with non-composite plastic pipes?
No, the fitting is specifically designed for composite pipes such as PEX-AL-PEX and should not be used with other types.

What tool is needed for tightening?
A standard spanner or wrench is sufficient for tightening the fitting securely.

Documents for download

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