IVAR.IVN412 88.9-54 mm slip-on reducer, one end, stainless steel AISI 304

Product detailed description

The reduction IVAR.IVN412 88,9-54 mm made of stainless steel AISI 304 (1.4301) is a press-fit system fitting that allows a transition from a dimension of 88.9 mm to 54 mm in one step. The smooth insertion end with a diameter of 88.9 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 54 mm pipe. The total length of the reduction is 157 mm.

For which types of piping 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

The reduction is 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 54 mm socket is equipped with an LBP (Leak Before Press) O-ring with a segmented profile – an unpressed joint will leak during pressure testing and thus cannot pass inspection. In addition, there is an orange stripe on the socket, which tears during pressing and can be removed by hand.

Both joints – the 54 mm socket and the 88.9 mm insertion end in the connecting fitting – are pressed using chain pliers with an M profile and at least 3 segments. 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.

For large diameters from 76.1 to 108 mm, the manufacturer recommends securing the pipes and fittings with mounting clamps before pressing to ensure the joint remains precisely aligned.

Warning: Pressed joints must be made by a qualified person following 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 88.9-54 mm reduction connected?
The 54 mm pipe is inserted into the press-fit socket of the reduction and pressed. The smooth 88.9 mm end is inserted into the press-fit socket of another 88.9 mm fitting and pressed together with it.

Which press-fit pliers are needed?
Both joints – the 54 mm socket and the 88.9 mm insertion end in the connecting fitting – are pressed using chain pliers with an M profile and at least 3 segments. Pliers with a V profile must not be used with this system.

How can I identify an unpressed joint?
The 54 mm socket has an LBP O-ring, which will leak fluid during pressure testing if the joint is unpressed. An unpressed socket is also indicated by an intact orange stripe.