KAN-therm Push connector

KAN-therm Push connector

A KAN-therm Push connector joins PE-Xc and PE-RT pipes in the sliding-sleeve system or takes the polymer circuit onto a threaded fitting. Sealing comes from a profiled spigot with no O-ring: the pipe end is expanded, pushed onto the fitting and locked with a brass or PVDF sleeve. These joints are used in indoor heating, underfloor heating and domestic hot and cold water, including installations in screed and under plaster. A mismatch in diameter, wall thickness or thread type leaves a leaking joint, so the size is taken from the pipe marking.

Main types of KAN-therm Push connectors

An equal PPSU coupling joins two pipes of the same size on a straight run. A reducing coupling steps, for example, from 25×3.5 to 18×2.5 without a separate adapter. A brass connector with male or female thread links the circuit to a valve, manifold, meter or steel section. System threads are parallel, most often G1/2 and G3/4; they are not paired with a taper thread on a non-system part. Joining a new 18×2.5 pipe to an existing 18×2 run needs the dedicated coupling, not a standard equal fitting.

Materials and construction

Bodies are polyphenylsulfone (PPSU) or CW617N brass. PPSU is lighter, not subject to dezincification and practical on long polymer runs. Brass is chosen where a thread or extra mechanical strength next to valves is needed. The sliding sleeve is either asymmetric brass, chamfer toward the fitting, or symmetric PVDF, which needs no orientation. The sleeve must match the pipe diameter. Assembly uses a manual, hydraulic or battery press: grip only the fitting flange and do not slide two sleeves at once.

Where the connector is used

The system is intended for indoor cold and hot water, radiator heating and surface heating. Five-layer PE-Xc and PE-RT pipes with an EVOH barrier limit oxygen ingress into a closed circuit. Connectors sit on straight runs, at manifold niches and at transitions to threaded equipment. No open flame is required, so the joint can be made in occupied rooms and concealed after a pressure test.

How to choose a KAN-therm Push connector

Match outside diameter and wall thickness: 12×2, 14×2, 18×2, 18×2.5, 25×3.5, 32×4.4. Fittings in this system are for its PE-Xc and PE-RT pipes, not for an arbitrary PEX pipe from another maker. For a metal transition, check male or female thread and access for the press tool. Price depends on body material, thread, reduction and diameter. Working temperature and pressure come from the data sheet of the specific fitting and pipe.

Why order from Piping Systems of Ukraine

Piping Systems of Ukraine can match a connector to the pipe already on site, align sleeves and the rest of the joint, and supply a project quantity. We work with installers, designers and retail buyers and ship across Ukraine. Availability and price are confirmed against the article number before the order is placed.

Send a request to check stock and price for the KAN-therm Push connector you need. We will point you to the PE-Xc or PE-RT version and the threaded transition.

Popular sizes

• equal PPSU couplings: 12×2, 14×2, 18×2.5, 25×3.5, 32×4.4
• reducing: 14×2 / 12×2, 18×2.5 / 14×2, 25×3.5 / 18×2.5, 32×4.4 / 25×3.5
• transition from 18×2.5 to an existing 18×2 run
• brass connectors with male and female G1/2 and G3/4 threads
• CW617N brass and PVDF sliding sleeves for the same pipe diameter

FAQ

How does a Push joint differ from an O-ring press fitting?
The seal is the pipe itself, clamped onto a profiled spigot by a sliding sleeve. There is no separate elastomer ring in the body to seat or inspect. The joint is made with an expander and a sleeve-sliding tool, not with the radial jaws of another press system.

Can a brass sleeve be used on a PPSU fitting?
In KAN-therm Push, brass and PVDF sleeves may be combined with either PPSU or brass bodies if the diameter matches the pipe. The brass sleeve is asymmetric: the chamfer faces the fitting. A PVDF sleeve is symmetric and needs no orientation.

Why not join a female G thread to an external taper R thread?
Threaded connectors in the system are meant for parallel pipe threads. Pairing G with a taper R does not give the intended seal and can damage the thread. Move to valves through a part with a compatible parallel thread and the specified joint seal.

Can this connector be buried in screed?
Yes. Push technology is intended for concealed installation in floors and under plaster when the joint is made to the system instructions and pressure-tested. Pipe, sleeve and fitting must match before the joint is covered. A completed sliding joint cannot be reopened without replacing the section.

How do 18×2 and 18×2.5 differ?
Both pipes have an 18 mm outside diameter, but wall thickness changes the bore and the fitting they fit. Read the marking on the pipe rather than judging by eye. Linking an old 18×2 line to a new 18×2.5 pipe needs the dedicated connector, not two identical couplings.