Kromschroeder (74912250) connecting set for two DG..U

Kromschroder 74912250 Connecting Set is a special mounting kit designed for paired installation of two pressure switches (pressure, vacuum, differential) of the DG..U or DG..T series. Using this kit allows organizing a system for monitoring minimum and maximum inlet pressure on one process unit. Two pressure switches connected via this kit functionally create a logical "AND" chain: for example, to start the burner, both signals are required — "pressure not below normal" and "pressure not above normal". This connection scheme is a standard solution for improving the safety of gas control systems. Technical specifications: Parameter Value Part numbers 74912250, 624.391.003 Manufacturer Kromschroder (Germany) Purpose Mechanical and pneumatic connection of two pressure switches Compatibility DG..U, DG..T (min/max version) Weight 0.006 kg (6 g) Materials Gas-resistant polymers and seals. Principle of operation and application: This connecting set is used to create a compact dual pressure monitoring unit. Installation is as follows: Controlled gas pressure is supplied to one inlet fitting. Through the internal channels of the kit, pressure is simultaneously applied to both installed switches (e.g., minimum and maximum). The output signals from the pressure switches are connected in series in the safety circuit. This solution is in demand when installing gas burners and boiler houses where, according to safety requirements (e.g., EN 746-2), monitoring of the upper and lower gas pressure limits before the burner is required. Key advantages: Compact installation: Replacing two separate units with piping connections with one dual solution, saving space in the cabinet.