Kromschroder Air/gas ratio control GIK50R02-5 03155158

The Kromschroder GIK50R02-5 is a diaphragm-operated gas pressure regulator that maintains a constant 1:1 gas/air ratio. It has a nominal diameter of 50 mm with a Rp 2" threaded connection, and is designed for inlet pressures up to 200 mbar. The outlet pressure range is 0.2–119 mbar, and it features inlet pressure compensation and an outlet pressure test point. This CE-certified regulator is made in Germany and is suitable for applications requiring high regulation accuracy and energy efficiency.

When selecting a replacement air/gas ratio control of this type, verify the connection size (e.g., Rp 2" for DN50), the maximum inlet pressure, and the required outlet pressure range. Ensure the control's gas/air ratio characteristic matches the burner's demands, and check the mounting orientation and signal line connections. Before installation, confirm the zero-point setting and clean the air signal line to prevent contamination.

Common failures include diaphragm perforation or stiffness, leading to a drifting gas/air mixture and unstable flame. Contamination of internal air ports can cause erratic pressure control. If the equipment exhibits fluctuating combustion or poor efficiency, inspect the diaphragm and air ports for damage or blockage. The unit has no replaceable wear parts; replace the entire regulator if faulty.