Wilo-STAR-Z 20/1 circulation pump 4028111

Domestic hot water circulation pump – reliability and efficiency

The Wilo-STAR-Z 20/1 circulation pump is a solid solution for the construction and modernization of domestic hot water circulation systems. Designed for use with potable water, it provides efficient water circulation, eliminating long waiting times for hot water at taps. The pump's construction, based on corrosion-resistant materials, guarantees long-lasting and trouble-free operation even in difficult conditions.

Construction and application

The Wilo-STAR-Z 20/1 is a canned pump, which means there are no mechanical seals exposed to wear. This design minimizes the risk of leaks and extends the life of the device. The pump is ideal for installation in residential buildings, public utility facilities, and anywhere where continuous circulation of hot water is required. Thanks to its compact size and simple installation, the pump is quick and easy to install for both professionals and end users.

Key features and benefits

• Corrosion resistance: The pump body made of bronze (Rg 5) and the impeller made of polypropylene (PP-GF) provide high resistance to the chemical agents contained in domestic water. This translates into a longer pump life and fewer failures.
• No maintenance required: The canned design eliminates the need to regularly replace mechanical seals, reducing operating costs and simplifying operation.
• High efficiency: The maximum pump capacity reaches 1.6 m³/h, and the maximum head is 0.96 m, ensuring adequate water flow in the installation.
• Overload-resistant motor: The motor is designed to operate with a blocked impeller – protecting the pump from damage in the event of a temporary loss of flow.
• Simple installation: Threaded G 1 inch connections make it easy to integrate the pump into the existing hydraulic installation.
• Reliability: Insulation class F and protection class IP44 guarantee safe and stable operation in various environmental conditions.

The Wilo-STAR-Z 20/1 pump has a motor power of 0.03 kW and is powered by a voltage of 230 V at a frequency of 50 Hz. The body is made of bronze (Rg 5), and the impeller is made of polypropylene (PP-GF). The pump connections are external tapered threads (BSPP) with a diameter of G 1 inch.

The Wilo-STAR-Z 20/1 pump is an investment in the comfort and reliability of a domestic hot water system – both for installers looking for proven solutions and for users who value convenience and low operating costs.