Kromschroder Gas pressure regulator GDJ50R04-0 03155025

The Kromschroder GDJ50R04-0 gas pressure regulator maintains a constant outlet pressure for gas burners and boilers. It features inlet pressure compensation and zero shut-off, ensuring stable operation despite fluctuations in inlet pressure. With a nominal diameter of 50 mm and Rp 2" internal thread, it handles inlet pressures up to 400 mbar and adjustable outlet pressures from 5 to 100 mbar (standard setting 12.5–25 mbar). Suitable for natural gas, LPG, and air (dry, without condensate), it operates in ambient temperatures from -20 to 60 °C and weighs 3100 g.

When selecting a gas pressure regulator of this type, verify the connection size and thread type (e.g., Rp 2" internal thread) to match the existing piping. Ensure the inlet pressure rating and outlet pressure range cover your system's requirements. Check the gas type compatibility and ambient temperature range. Installation should follow the manufacturer's guidelines, ensuring proper orientation and access for adjustment.

Common failures include diaphragm wear or seat damage, leading to outlet pressure drift or instability. Symptoms may include burner flame fluctuation, ignition failure, or lockouts. Check the regulator's outlet pressure with a manometer and inspect the diaphragm and seat for wear or debris. If the regulator fails to maintain pressure, it may need replacement.