Transition elbow 90° - with male thread - N - 18mm-R1/2" IVAR.IVN31

Product detailed description

This 90° transition elbow is designed for use in heating, sanitary, and industrial piping systems. It enables secure connection between press-fit stainless steel pipe and threaded components such as valves, meters or regulators. The elbow is commonly used in residential, commercial and industrial buildings where reliable sealing is required under variable thermal conditions. Installers working on central heating, solar thermal, or pressurised air systems will find this component essential for integrating threaded devices into stainless steel pipe networks.

The elbow supports a wide range of applications, including fire suppression, solar thermal, and inert gas systems. It is particularly suited for environments where corrosion resistance and long-term durability are critical. The press connection ensures a leak-free joint when properly compressed to the specified dimension.

Technical parameters

Material	Stainless steel grade 1.4404 (AISI 316L), EPDM O-ring
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN31.1812
Brand	IVAR

Installation and connection

To install the elbow, first ensure the press-fit end is correctly compressed onto the stainless steel pipe using a certified press tool. The male thread end should then be connected to the corresponding female fitting. The elbow is available in a size of 18 mm (press side) and 1/2 inch (threaded side). Verify that the press mark is fully visible and the compression dimension is 54 mm to ensure a tight seal. Common installation errors include insufficient pressing depth or using non-compatible press tools, which can compromise the integrity of the joint.

Compatibility and accessories

The elbow is compatible with press-fit stainless steel piping systems of the same class and material. For a complete installation, ensure that all connected components (valves, meters, regulators) have matching thread sizes and sealing requirements. Accessories such as press tools and sealing rings should be selected according to the manufacturer’s specifications.

Technical background for designers

This elbow functions as a directional change in piping systems, enabling the redirection of fluid or gas flow. The 1.4404 stainless steel body provides high resistance to corrosion and maintains structural integrity over a wide temperature range. The EPDM O-ring ensures a flexible yet durable seal, adapting to minor misalignments during installation. When integrated into a system, the elbow must be sized correctly to maintain hydraulic balance and prevent pressure loss. The operating temperature range and nominal pressure rating are key factors in determining suitability for specific applications.

Service and operation

During service, inspect the elbow for signs of leakage or mechanical damage. Ensure that the press mark remains intact and that the connection is free from corrosion. The elbow does not require scheduled maintenance unless part of a larger system with defined service intervals. Any suspected faults should be addressed by replacing the component rather than attempting repairs.

Frequently asked questions

Can this elbow be used in solar thermal systems?
Yes, it is suitable for solar thermal applications due to its resistance to thermal cycling and high temperatures.

Is the elbow compatible with standard press tools?
Yes, provided the tool is certified for use with 1.4404 stainless steel and press-fit systems of this type.

What is the maximum allowable operating temperature?
The elbow can be used continuously up to +120 °C.

Does the elbow require a specific tightening torque for the thread?
No specific torque is required for the male thread, but hand tightening followed by a quarter turn is recommended to ensure a secure connection.