IVAR.IVN412 28-22 mm Reducer with One Push-in End, Stainless Steel AISI 304

Product detailed description

The reduction IVAR.IVN412 28-22 mm made of stainless steel AISI 304 (1.4301) is a press-fit system fitting, which allows a transition from a 28 mm to a 22 mm dimension in one step. The smooth insert end with a diameter of 28 mm is inserted into the press fitting of another fitting of the same size, while the opposite side has a press fitting with an EPDM O-ring for the 22 mm pipe. The total length of the reduction is 66 mm.

For which types of 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 fitting

The 22 mm fitting is equipped with an LBP (Leak Before Press) O-ring with a segmented profile – an improperly pressed joint will leak during pressure testing and thus cannot be overlooked. Additionally, there is an orange stripe on the fitting, which will tear during pressing and can be removed by hand.

Both connections – the 22 mm fitting and the 28 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 connection 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 range 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 28-22 mm reduction connected?
The 22 mm pipe is inserted into the press fitting of the reduction and pressed. The smooth 28 mm end is inserted into the press fitting of another 28 mm fitting and pressed together with it.

Which press jaws are needed?
Both connections – the 22 mm fitting and the 28 mm insert end in the connecting fitting – are pressed using single-piece jaws with profile M. Jaws with profile V must not be used for this system.

How can I identify an improperly pressed connection?
The 22 mm fitting has an LBP O-ring, which will allow the liquid to escape during pressure testing if the connection is not properly pressed. An unpressed fitting is also indicated by an intact orange stripe.