Geberit Mapress stainless steel plain end elbow: 90°, d=22mm 30404

Precision press elbow for sanitary and industrial installations

The Geberit Mapress press elbow with an angle of 90° and a diameter of 22 mm (DN 20) is a piping system component made of CrNiMo stainless steel according to the DIN EN 10088 standard. The product, marked with catalog number 30404, is used for precise changes in pipe direction in sanitary, heating, and gas installations - including both natural gas (NG) and liquefied petroleum gas (LPG).

Material and corrosion resistance

The component is made of high-alloy CrNiMo stainless steel (grade 1.4401), also known as 316 stainless steel. It is characterized by increased resistance to pitting and crevice corrosion, which is essential in installations exposed to moisture and varying atmospheric conditions. The material meets the flammability class A1 according to DIN 4102-1, meaning it is completely non-combustible - crucial for industrial applications and gas installations.

A thermal expansion coefficient of 0.016 mm/(m·K) and a thermal conductivity of 15 W/(m·K) allow for predictable component behavior during changes in the working medium temperature.

Applications and system compatibility

The elbow is designed for press connections on both sides - each connection has an outer diameter of 22 mm, a wall thickness of 1.2 mm, and a working length of 142 mm on one side and 70 mm on the other. The M profile enables installation using Geberit Mapress crimping jaws.

The working pressure range reaches 16 bar at a temperature of 20°C, allowing for wide application in domestic and medium-pressure industrial installations. The product does not include seals - dedicated CIIR sealing rings used in the Mapress system are required for connection.

Geometric and operational parameters

The overall dimensions of the elbow for nominal diameter DN 20 are:

Parameter	Value
Total height H	7 cm
Height H1	12 cm
Spigot K	0 cm
Spigot K1	5 cm

The value K = 0 means there is no additional spigot for shortening on one side - the design is optimized for space-saving where dimensions are critical. An internal surface roughness of 1.5 μm minimizes medium flow resistance through the elbow.

CrNiMo steel provides high tensile strength - the component is suitable for working under pressure without the risk of permanent deformation under typical operating conditions of water and gas installations.