Explosion-proof relief valve with overflow solenoid and pressure selected for plate mounting, flow up to 500 l/min. These solenoid valves meet ATEX, IECEx, INMETRO and WEIGHT requirements and are suitable for use in potentially explosive environments, surface installations or mines. A low temperature version (as low as -40 °C) is also available. Five versions are available, allowing the entire flow to be discharged through a solenoid valve or a choice of 3 more pressure values. The selection of secondary and tertiary pressure values is obtained by inserting a large pressure regulator between the main and solenoid valves. Connection of pressure gauge and remote guide. These valves can be used for DC or rectifying current supply to AC power supply. The rectifier bridge is integrated into the coil. There are several types of connections, metric or NPT. Cable seal sleeves are available separately.