IVAR.IVN412 35-22 mm Reducing Coupling with One Push-in End, Stainless Steel AISI 304

Product detailed description

The reduction IVAR.IVN412 35-22 mm made of stainless steel AISI 304 (1.4301) is a press-fit system fitting that allows a transition from 35 mm to 22 mm in one step. The smooth insert end with a diameter of 35 mm is inserted into the press-fit socket of another fitting of the same size, while the opposite side has a press-fit socket with an EPDM O-ring for the 22 mm pipe. The total length of the reduction is 78 mm.

For which systems is it suitable

• closed heating and cooling circuits, solar systems
• technical and operational liquids, industrial applications
• compressed air, vacuum systems, inert and technical gases
• drainage of waste and rainwater

Not suitable for potable water – this is also indicated by a symbol in the fitting designation.

Operating limits

• pressure up to PN 16, vacuum down to -0.8 bar (absolute pressure 0.2 bar)
• operating temperature from -20 °C to +120 °C
• anti-freeze mixture with a maximum concentration of 50 %

Installation and inspection of the press-fit

The 22 mm socket is equipped with an LBP (Leak Before Press) O-ring with a broken profile – an unpressed joint will leak during pressure testing and thus cannot pass inspection. Additionally, an orange stripe is present on the socket, which tears during pressing and can be removed by hand.

Both joints – the 22 mm socket and the 35 mm insert end in the connecting fitting – are pressed using single-piece jaws with profile M. Insert the pipe all the way to the stop and mark its position with a marker. The O-ring may only be moistened with water, never with oil or grease, and each joint is pressed only once.

Warning: Pressed joints must be made by a qualified person according to the IVAR.PRESS FITTING SYSTEM instructions. The manufacturer recommends flushing the entire system before starting the heating system.

Technical parameters

Frequently asked questions

Can the IVAR.IVN412 reduction be used for potable water?
No, fittings made of AISI 304 steel in this series are not suitable for potable water. They can be used, for example, in closed heating and cooling circuits, solar systems, or for compressed air.

How is the 35-22 mm reduction connected?
The 22 mm pipe is inserted into the press-fit socket of the reduction and pressed. The smooth 35 mm end is inserted into the press-fit socket of another 35 mm fitting and pressed together with it.

Which press-fit jaws are required?
Both joints – the 22 mm socket and the 35 mm insert end in the connecting fitting – are pressed using single-piece jaws with profile M. Jaws with profile V must not be used with this system.

How can I identify an unpressed joint?
The 22 mm socket has an LBP O-ring, which allows liquid to escape during pressure testing of an unpressed joint. An unpressed socket is also indicated by an intact orange stripe.