Kromschroder Air/gas ratio control GIK 50R02-5L 03155161

The Kromschroder GIK 50R02-5L is a pneumatically actuated gas pressure regulator designed to maintain a 1:1 gas/air ratio in industrial burner systems. It features a compensation diaphragm and zero closure, with a turndown ratio of 1:10. The regulator has a nominal diameter of DN 50 (Rp 2" internal thread) and operates with a maximum inlet pressure of up to 200 mbar, covering a pressure range of 0.005–1.2 mbar. It is compatible with natural gas, LPG, and air, and is certified to EN 88 and CE standards. This German-made component is suitable for applications requiring precise gas/air ratio control.

When selecting a gas pressure regulator of this type, ensure the connection size (nominal diameter and thread type) matches the existing piping, and verify that the inlet pressure range and required gas/air ratio are within the regulator's specifications. The regulator must be compatible with the burner's air signal pressure and gas valve capacity. Check the spring range if the regulator is spring-loaded, as mismatched settings can cause poor combustion. Installation typically involves mounting between the gas valve and burner, with proper alignment of the pneumatic signal connection.

Common failures in gas pressure regulators of this kind include diaphragm rupture or debris buildup, leading to unstable gas/air ratio and flame fluctuations. Symptoms may include burner pulsation, incomplete combustion, or flame loss. Check for leaks, inspect the diaphragm for damage, and verify that the pressure settings are within the specified range. Regular maintenance and cleaning of the regulator can prevent these issues.