KAN-therm Push Bend

KAN-therm Push elbow

A KAN-therm Push elbow turns a PE-Xc or PE-RT pipe through 90 degrees in a sliding-sleeve joint, with no welding and no rubber seal on the spigot. The fitting is used at a floor-heating bend, beside a manifold, at a wall outlet and on a radiator run. A mismatch of diameter and wall, or the wrong body material, leaks at the pressure test. The elbow is therefore ordered with the pipe and the sleeve, not by a similar size.

Main types of KAN-therm Push elbow

An equal PPSU elbow keeps both ends in the polymer circuit. After the pipe is expanded and the sleeve is slid on, the profiled spigot forms a self-sealing joint: the pipe grips the spigot radially and no separate gasket is required. This version suits screed, a chase and a closed wall.

A brass elbow is used closer to a valve, a manifold or a mechanically loaded node. The body is usually nickel-plated and the assembly sequence is the same. A male or female threaded elbow joins the Push circuit to a tap, a meter or a manifold group; the thread is sealed separately.

A wall-plate elbow and an elbow with a nickel-plated 15 mm copper tail bring the branch out to a fixture or a radiator. The copper tail gives a fixed appliance connection; the seating side stays matched to the system pipe.

Materials and construction

The KAN-therm Push elbow body is PPSU or brass. Polyphenylsulfone does not corrode in water and is practical for a concealed bend. Brass is stiffer on a thread and at an appliance connection; nickel protects an exposed surface. The sleeve is brass or PVDF, and the sleeve–fitting pair is checked against the system instructions. PPSU and brass require different tool inserts.

Temperature and pressure limits depend on pipe class and wall thickness. For radiator heating the system is rated to 80 °C operating and 90 °C short-term maximum; design pressure is 10 bar for most diameters in that class and lower for some walls. Check the product data sheet before ordering.

Where the elbow is used

The elbow is used in indoor cold and hot water and in heating for residential and commercial buildings. In underfloor heating it turns the circuit at the manifold and around an obstacle without a tight bend in the pipe. On a radiator circuit it brings the branch out of the screed to the appliance. At a wall outlet it fixes the mixer connection. Media other than water and heating fluid need approval from the manufacturer’s technical department.

How to choose the right elbow

Match the pipe marking first: 14×2, 18×2, 18×2.5, 25×3.5 or 32×4.4. The pair 18×2 and 18×2.5 is not interchangeable — different wall, different sleeve, different seat. A floor bend takes an equal PPSU elbow, a tap outlet takes a threaded elbow, a radiator takes a copper-tail or wall-plate version. Expansion head and press forks must match the diameter. A joint is concealed only after seating depth and a pressure test are confirmed. Price follows body material, thread or copper tail, and size.

Why order from Piping Systems of Ukraine

Piping Systems of Ukraine matches the elbow with PE-Xc or PE-RT pipe and the sliding sleeve. A contractor can order the nodes wholesale for a site; a private buyer can take a few elbows for a repair in Kyiv or with delivery across Ukraine. The wall thickness is checked before the invoice, and supply documents for the item are prepared on request. Availability and price are confirmed before dispatch.

Send a request to confirm availability and price of the KAN-therm Push elbow you need. We will match the size to your pipe and the sleeve set before installation.

Popular sizes

• 14×2 — apartment distribution and short runs
• 18×2 and 18×2.5 — separate seats, sleeves not interchangeable
• 25×3.5 — manifold mains and riser sections
• 32×4.4 — larger bore in the plant room and at the circuit inlet
• G½" threaded versions on 14×2 and 18×2.5
• wall-plate elbow and nickel-plated Cu 15 mm tail for a radiator or fixture outlet

Send a request to confirm availability and price of the KAN-therm Push elbow you need. We will match the size to your pipe and the sleeve set before installation.

FAQ

Can a Push elbow be buried in a floor-heating screed?
Yes, if it is a KAN-therm Push joint: no rubber ring on the spigot, pipe expanded, sleeve slid to full depth. The manufacturer allows these joints in floors and under plaster. Pressure-test the circuit before closing it, and use the expansion head for that exact pipe wall.

How does a PPSU elbow differ from a brass one?
PPSU does not corrode in water and suits a concealed bend in a polymer run. Brass, usually nickel-plated, is stiffer next to a tap, a manifold or a threaded transition. Assembly is the same — expand, seat, slide the sleeve — but tool inserts for polymer and brass differ.

Why will an 18×2 sleeve not fit an 18×2.5 pipe?
Outside diameter matches; wall thickness does not. The different wall changes the bore and the seat on the spigot, so sleeve, head and fitting must carry the same size pair. Mixing 18×2 and 18×2.5 leaves a partial grip or cracks the expanded end.

Does the Push spigot need a gasket or tape?
Not on the seating side. Tightness comes from radial grip of the pipe on the profiled spigot after the sleeve is slid on. Tape, hemp or anaerobic sealant is used only on the threaded outlet, where the elbow meets a tap, a meter or a radiator valve.

Which elbow is used for a radiator or a wall outlet?
An elbow with a nickel-plated 15 mm copper tail, or a wall-plate elbow with a female thread for the valve, suits the appliance. An equal PPSU elbow stays in the floor, where both ends remain on PE-Xc or PE-RT pipe. Copper-tail length and outlet centres come from the node, not from a neighbouring diameter.