Press, push-fit, and threaded fittings
For multilayer pipes and connection points: classify couplings, tees, elbows, wall elbows, transitions, and plugs by pipe size, thread, and installation method.
Identify the system and pipework first
Press, push-fit, and threaded fittings serve different purposes on multilayer pipes: connecting two pipe ends, creating a branch, changing direction, or transitioning to a thread. The product facts list the sizes 16 x 2, 20 x 2, 26 x 3, and 32 x 3. The complete designation is therefore more important than the basic shape alone.
The installation method is a separate selection criterion. For the press products described, the connection is made with a suitable pressing tool. Several threaded fittings are described as installable without a pressing tool. The 16 mm and 20 mm push-fit couplings specify installation without pressing or without special tools. The size, connection, and system must each match the existing pipe.
Press fittings
The product texts list press couplings, tees, elbows, wall elbows, and transitions. The range includes, for example, 20 x 2, 26 x 3, and 32 mm versions; a 20 mm tee is described as a multi-contour press connector.
Threaded fittings
The threaded fittings described focus on couplings with male or female threads, tees, elbows, wall elbows, and plugs. Selected 32 x 3 couplings are specified with two O-rings.
Push-fit fittings
According to the product description, push-fit couplings connect 16 mm or 20 mm pipes without pressing. Push-fit wall elbows and transitions are also available; for these versions, the pipe size and connection must likewise be checked in full.
Match pipe size, wall thickness, and thread
Size combinations such as 16 x 2, 20 x 2, 26 x 3, or 32 x 3 are central to the selection. A 16 x 2 coupling and a 20 x 2 coupling are not interchangeable. With reducing designs, the order of the dimensions also matters because the connections can accept different pipe sizes. This is especially important for tees and reducing couplings.
AG in the product designations stands for male thread, while IG stands for female thread. Examples in the product facts are 3/4 inch male thread on a 32 x 3 threaded coupling, 1 inch female thread on the 32 mm transition fitting, and 1/2 inch female thread on a 32 mm press tee. A mating part with a female thread requires a male thread; for a mating part with a male thread, check the female-thread version.
Shapes for routing and connections
Couplings are used for straight connections or transitions. Tees create a branch in the line; the size sequence shows which side is reduced or enlarged. Elbows are intended for changes of direction. Wall elbows guide a run to a fixed wall connection, sometimes with a mounting plate. Plugs close a 16 mm connection explicitly mentioned in the product description. The press-fitting ball valve 24695 is listed with a red wing handle and the size 26 x 3.
Straight run and transition
For two identical pipe ends, a coupling may be suitable, such as a 32 x 3 – 32 x 3 version. If a threaded connection is needed, the combination of pipe size and male or female thread determines the choice. With a threaded transition, also observe the connection side specified in the product text.
Branch, corner, and wall connection
For a branch, compare the tee's size sequence with the route of the pipework. For a corner, an elbow or transition elbow may be suitable. A wall elbow fits a situation where the pipe ends at a mounting or connection point; the versions differ in size, thread, and design.
Product examples with technical details
Threaded fitting coupling 32 x 3, 3/4 inch male thread
The product description specifies 32 x 3 with a 3/4 inch male thread, two O-rings, and installation without a pressing tool. The listed applications are drinking-water installations, radiant/ceiling cooling, radiant/ceiling heating, radiator connections, and oil-free compressed air up to 10 bar. The weight is 0.20 kg.
Product page for the 32 x 3 coupling
Press-fitting transition 32 mm, 1 inch female thread
The press transition is designated for 32 mm, 1 inch female thread, and multilayer composite pipe. The description names heating, sanitary installations, and drinking water as application areas. The stated weight is 0.19 kg.
Product page for the 32 mm transition
Press tee 20 x 2 – 16 x 2 – 16 x 2
The product card specifies a crossing-free design, an optimized contour, unobstructed flow, and Made in Germany. The technical values listed are 10 bar at 70 °C and a maximum operating temperature of 95 °C. The weight is 1.8 kg.
Product page for the press teeAnother comparison is the 20 mm push-fit coupling: its product description specifies tool-free installation and a weight of 0.09 kg. The 16 mm push-fit coupling 11034 is listed at 0.06 kg, while the 16 mm press wall elbow with mounting plate 3584 weighs 0.52 kg. These weights apply to the respective named articles.
Plan installation for the fitting situation
For a straight repair section, determine the coupling first. For a branch, note the tee's size sequence; for a change of direction, choose the appropriate elbow version. If the pipe ends at a wall or valve, consider wall elbows with the required pipe size and thread. A plug is intended for an explicitly matching closure.
- 16 x 2 with 1/2 inch female thread: threaded fitting wall elbow 5650 specifies this combination and installation without a pressing tool.
- 16 mm with mounting plate: press wall elbow 3584 is listed for heating and installation and weighs 0.52 kg.
- 32 x 3 with 3/4 inch male thread: threaded coupling 5636 combines the size and male thread in one version.
- 32 mm with 1 inch female thread: transition fitting 3480 is designated for multilayer composite pipe.
Before installation, consider the cut, pipe end, accessibility, and space for the tool. For a threaded or push-fit version, the specific product instructions are decisive; for a press product, the pressing tool must match the stated contour. This makes the installation plan depend on the actual fitting situation rather than on diameter alone.
Assess application areas and technical values separately
The product descriptions mention drinking water and heating for various couplings, tees, and transitions. Selected threaded fittings also list radiant/ceiling heating, radiant/ceiling cooling, radiator connections, and oil-free compressed air. These details belong to the specific article; they are not a blanket statement for every shape and size.
Pressure and temperature values likewise belong to the individual product. Several 32 x 3 threaded fittings list 10 bar at 70 °C and a maximum operating temperature of 95 °C. The 26 x 3 ball-valve product and the crossing-free tee 3073 also specify technical values. Before installation, the medium, temperature, pressure, and complete size sequence of the selected article must match.
Subcategories and related topics
Multilayer composite pipes
Pipe range for multilayer pipe systems; match the outside diameter and wall thickness to the fitting.
Multilayer composite pipe subcategoryPress fittings
Press couplings, tees, elbows, transitions, and wall elbows for the appropriate contour.
Press fitting subcategoryThreaded fittings
Threaded connections, tees, elbows, wall elbows, and plugs for pipe and threaded connections.
Threaded fitting subcategoryFor conventional threaded connections, the threaded fittings range is nearby. Further connection options are featured among brass connectors, ball valves, gate valves, and shut-off valves, and fittings and PE-pipe threaded connections.
Frequently asked questions about selection
How do press, push-fit, and threaded fittings differ when planning?
Press products call for a suitable pressing tool. The threaded fittings described focus on installation without a pressing tool, while push-fit couplings use installation without pressing or without special tools. The selection depends on the available tool, accessibility, system, and the details of the specific article.
Which details must I note before comparing sizes?
Note the pipe size and wall thickness, then the shape, male or female thread, inch size, and intended application. For tees and reducing couplings, include the complete sequence of dimensions. Take pressure and temperature only from the product description of the selected article.
What does the size sequence 20 x 2 – 16 x 2 – 16 x 2 mean?
The product designation sets out three connection sizes in this order. In the crossing-free press tee 3073, 20 x 2 is combined with two 16 x 2 connections. The order must match the planned through-run and branch.
When is a wall elbow suitable?
A wall elbow is intended for a defined wall or valve connection. Product 5650 specifies 16 x 2 and 1/2 inch female thread; press wall-elbow set 3584 specifies 16 mm and a mounting plate. The pipe size and connection must fit the installation point.
How do I compare pressure and temperature specifications?
Compare the values only within the same article. Several described 32 x 3 threaded fittings specify 10 bar at 70 °C and a maximum of 95 °C; this information is not automatically transferred to other sizes, shapes, or systems.
Quick check before selecting
Check the pipe size and wall thickness, determine the shape, read the size sequence, match the male or female thread, consider the installation method and tool, check the medium and the pressure and temperature values for the specific product, and compare both connection sides on transitions. This keeps the material list tied to the planned pipework and the selected article.