Wilo-Varios -STG 15/1-7 circulation pump 4215540

Universal circulation pump for modern heating systems

The Wilo-Varios STG 15/1-7 circulation pump is a reliable solution for applications in heating systems, manifolds and pump groups. Its versatility makes it perfect for both new installations and the modernization of existing ones. The compact design and advanced features, such as iPWM control and Sync function, guarantee efficient and quiet operation. This makes it an ideal choice for both professional installers and end-users looking for comfort and savings.

Performance and flexibility in every circuit

The Wilo-Varios STG 15/1-7 pump is characterized by a nominal flow rate of 1.963 m³/h and a head of up to 36.97 kPa. This ensures optimal operating parameters in a wide range of installations - from single radiators to extensive underfloor heating systems. The built-in motor speed controller allows for smooth performance adjustment, adapting it to the current heat demand. This translates to lower energy consumption and quieter pump operation. The use of a 0.05 kW motor with a current draw of 0.5 A further emphasizes its energy efficiency.

Construction and application – durability and reliability

The pump housing made of cast iron GG 20 (GJL-200) provides high resistance to corrosion and mechanical damage, guaranteeing long-term operation even in difficult conditions. The polypropylene (PP-GF) impeller is resistant to the chemical agents contained in heating installations. Insulation class F and protection degree IPX4D ensure safe use in various environments. The pump is designed to operate at an ambient temperature from -10 to 40°C and at a continuous average operating temperature from -10 to 95°C, making it a versatile solution for various heating applications. BSPP threaded connections with a diameter of 1 inch (25 mm) facilitate installation and integration with existing installations. The overall length of 130 mm allows the pump to be replaced without the need to modify the pipelines in many cases.