Geberit Mapress stainless steel plain elbow: 90°, d=15mm 30402

Precise pipeline route shaping in sanitary and industrial installations

Geberit Mapress Edelstahl plain elbow with a 90° angle and nominal diameter DN 12 is a fundamental element for precise pipeline route shaping in professional installations. Thanks to its double-sided press fittings (plain), it requires crimping using M-profile press jaws - ensuring a durable and leak-proof connection without the need for welding or threading.

The CrNiMo stainless steel material (1.4401 / DIN EN 10088) guarantees corrosion resistance and high tensile strength. A wall thickness of 1 mm with an outer pipe diameter of 15 mm allows for a working pressure of up to 16 bar at a temperature of 20°C - sufficient for most water and heating installations in residential buildings and industrial facilities.

Application and system compatibility

The product belongs to the Geberit Mapress system designed for various types of installations:

• Sanitary - potable and utility water,
• Heating - central heating,
• Gas - installations with natural gas (NG) and liquefied petroleum gas (LPG).

The elbow works with Mapress system pipes of the same nominal diameter DN 12. M-profile press jaws enable fast and secure installation - before crimping, the connection remains non-leak-proof (a characteristic feature of the entire Mapress line), which signals the need to perform the pressing operation.

Construction and mounting dimensions

For catalog number 30402 (d=15 mm), the manufacturer's catalog provides the following dimensions:

Dimension	Value
H	70 mm
H1	120 mm
K	22 mm
K1	72 mm

The working length of each end is 59 mm, and the total connection length is 129 mm. This geometry ensures adequate contact surface during pressing and stable seating in the conduit.

Material properties and fire safety

CrNiMo stainless steel is classified as non-combustible - class A1 according to DIN 4102-1. A thermal expansion coefficient of 0.016 mm/(m·K) and thermal conductivity of 15 W/(m·K) allow for predictable component behavior under variable temperature conditions without the risk of deformation or leaks.

The raw surface does not require additional anti-corrosion treatment - the natural passive layer of chromium-nickel-molybdenum steel is sufficient to protect it under standard operating conditions of water and gas installations.