Wilo-STAR-Z 25/6 circulation pump 4047573

Universal circulation pump for heating and domestic hot water systems

The Wilo-STAR-Z 25/6 pump is a solid and reliable device designed for circulating water in heating, air conditioning, and domestic hot and cold water systems. It is suitable for both domestic installations and more demanding commercial applications. Its compact design makes it easy to install even in tight spaces, and its high efficiency ensures effective system operation.

Construction and application

The pump is characterized by a bronze (Rg 5) housing, which guarantees corrosion resistance and long service life. The polypropylene (PP-GF) impeller is resistant to the chemical agents contained in the water. The purpose of the pump is to maintain forced water circulation, which prevents stagnation and ensures even distribution of heat or cold throughout the system. This significantly increases user comfort and minimizes the risk of problems related to uneven heating or cooling. It can be used in systems with radiators, underfloor heating and air conditioning.

Key advantages and features

• Performance: The maximum pump capacity is 2.52 m³/h, and the maximum head is 3.42 m – this ensures efficient operation in various installations.
• Durability: The bronze housing and polypropylene impeller guarantee corrosion resistance and long service life.
• Compact dimensions: The installation length of 180 mm makes it easy to install even in limited spaces.
• Easy installation: Threaded connections G 1½ inch on the suction and discharge sides simplify connection to the existing installation.
• Safety: The IP44 protection class protects the pump against splashing water and access to moving parts. Insulation class F ensures safe motor operation.
• Low power consumption: The motor power consumption (P1) is only 0.1 kW, which translates to low operating costs.
• Wide temperature range: The pump can operate in an ambient temperature range of 0 to 40°C and a liquid temperature range of 2 to 65°C, making it a universal solution for various applications.
• Quiet operation: The motor speed is 2700 1/min, providing quiet pump operation without annoying noise.
• Standard connections: Both the inlet and outlet connections are made in accordance with ISO 228-1 and have an external tapered BSPP thread with a diameter of 1 ½ inch (40 mm).

The Wilo-STAR-Z 25/6 pump is a proven choice for installers and users looking for a reliable solution for circulating water in heating and domestic hot water systems. Its solid construction, high efficiency and ease of installation guarantee long-lasting and trouble-free use.