Kromschroder Spring 75438985

The Kromschroder Spring 75438985 is an original spare part designed for use with Kromschroder VGBF 80 pressure regulators. It operates within a pressure range of 150–230 mbar and is marked with black/yellow color coding. This spring is made from spring steel and is certified to EN 88 standards. It is suitable for use with natural gas, LPG, biogas, and air, ensuring high stabilization accuracy and reliability. As an original part, it comes with an original guarantee and is intended for quick replacement.

When selecting a replacement spring for a gas pressure regulator, the key parameter is the required working pressure range. The color coding, such as black/yellow, indicates the spring's stiffness and corresponding pressure band. It is essential to match the spring to the original specification of the appliance, as an incorrect spring will shift the regulation point and may prevent safe operation. During installation, note the orientation of the spring ends and ensure the adjustment screw can travel freely. Always verify the pressure setting after replacement using a suitable manometer.

If a spring of this type fails or is incorrectly matched, the regulator may exhibit unstable output pressure, leading to fluctuations in burner operation. Symptoms can include difficulty maintaining set point, pressure drift, or the burner failing to ignite or modulate properly. Check the spring for signs of fatigue, deformation, or breakage, and verify that the color coding matches the required pressure range.