مجموعة محولات Kromschroeder 74921678 من طراز BVA/G مع ضبط يدوي

Kromschroder adapter 74921678 is an original spare part and accessory from German manufacturer Kromschroder, designed for installation on butterfly valves of the BVA (air) and BVG (gas) series. It allows manual adjustment of the valve opening angle and locking it, ensuring precise adjustment of air and fuel flows in industrial and commercial burner systems. (kromschroeder.de) Purpose of the adapter: BVA/BVG butterfly valves control air and gas supply in automated burner systems. In standard operation, they are controlled by an electric actuator, but in some cases manual adjustment is required: during initial system commissioning; to lock the valve in a specific position; to limit maximum air or gas flow; during service without actuator connection. (docuthek.kromschroeder.com) The adapter 74921678 allows easy manual rotation of the valve and locking it, ensuring stable system operation and adjustment accuracy. Advantages of the adapter: ✔ Original Kromschroder part — guaranteed compatibility with BVA and BVG valves. ✔ Manual adjustment — lever allows precise change of valve opening angle and locking. ✔ Position locking — prevents accidental movement and ensures stable air or gas supply. ✔ Versatility — suitable for DN40–150 valves with flange mounting. ✔ Easy installation — simple and quick integration without modifications. ✔ Durability and reliability — made of quality materials, withstands intensive use. (famaga.com) ️ Application area: The adapter 74921678 is used in industrial and commercial burner control systems: boilers and heat generators with adjustable air/gas supply; burner