Wilo-Varios -STG 25/1-7 circulation pump 4215542

Universal circulation pump for heating systems

The Wilo-Varios PICO-STG 25/1-7 circulation pump is a reliable solution for circulating water in heating installations, manifolds and pump groups. Its compact design and advanced control functions make it an ideal choice for both professional installers and end users. This is a universal replacement pump that will work in both new installations and when modernizing existing systems.

Construction and operating parameters

The pump is designed for efficiency and durability. The housing made of cast iron GG 20 (GJL-200) provides corrosion resistance and long life. The impeller made of polypropylene (PP-GF) is resistant to the action of the heating medium. Thanks to the built-in motor speed controller, the pump adjusts its operation to the current needs of the system, which translates into energy savings. It is worth noting its compact dimensions – the connection length is only 180 mm, which facilitates installation even in tight spaces.

• Performance: The maximum pump capacity is 3.754 m³/h, and the nominal flow rate is 1.963 m³/h.
• Pressure: The maximum working pressure is 10 bar, which ensures safe operation in various conditions.
• Temperature: The pump can operate in a temperature range from -10°C to 95°C, which allows it to be used in various heating systems.
• Connections: It is equipped with external gas cylindrical (BSPP) threaded connections with a diameter of 1 1/2 inches (40 mm), which facilitates integration with the existing installation.
• Efficiency: The energy efficiency index (EEI) at level 0.2 guarantees low electricity consumption.

Functions and advantages for the installer and user

The Wilo-Varios PICO-STG 25/1-7 pump offers a number of benefits for both the installer during installation and the end user during operation:

• Easy installation: The compact design and standard connections facilitate and speed up the installation process.
• Versatility: Possibility of use in various types of heating installations – from domestic central heating systems to manifolds and pump groups.
• Energy saving: The built-in motor speed controller and high EEI index translate into lower electricity bills.
• Reliability: Made of high-quality materials, such as cast iron GG 20 and polypropylene PP-GF, ensures long and trouble-free operation.
• Quiet operation: The optimized design minimizes noise levels during pump operation.
• Regulation functions: It has iPWM and Sync regulation functions, which allow you to adapt the operating mode to the specific needs of the heating system.
• Safety: Protection class IPX4D protects against splashing water, and insulation class F ensures safe use.

The Wilo-Varios PICO-STG 25/1-7 pump is an investment in thermal comfort and energy savings – a solution proven by professionals and appreciated by end users.