Honeywell Gas solenoid valves VR434VA5009-1000

The Honeywell VR434VA5009-1000 is a gas solenoid valve with a nominal diameter of 34 mm, designed for regulating gaseous fuel supply in burners and boilers. It operates with a supply voltage of 230 V at 50 Hz, has a maximum inlet pressure of 200 mbar, and a flow capacity of 1 m³/h. The valve features two main valves (V1 and V2) with a pressure control valve between them, and is classified as class A per EN 126/EN 161, with regulator class C. Its body is made of aluminum alloy, and it includes a mesh filter with 0.34 mm cell size, meeting EN 161 standards.

Parts of this type are selected by matching the nominal diameter, inlet pressure rating, supply voltage, and flow capacity to the system requirements. The valve body has 4 flanged connections on each side, allowing installation of accessories like pressure switches. Before ordering, verify the flange kit includes the necessary sealing plug, sealing ring, screws, and pressure measuring fitting. Ensure the valve's ingress protection (IP40) and seal standards (DIN 3535, EN 291) are compatible with the application.

Common failure modes for this kind of valve include sticking plungers due to debris or wear, leading to incomplete closure or erratic flow. Symptoms may include burner ignition failure, unstable flame, or gas leakage. Check the mesh filter for clogging, inspect seals for deterioration, and verify the actuator coil and locking sleeve assembly for proper operation. If pressure regulation is inconsistent, test the pressure feedback connection and regulator spring lock.