Installation filling valve 2128 3/4 inch 2128.20.005

Filling valve for heating systems – a reliable solution for open and closed systems

The 2128 filling valve is a key element in automating the process of filling heating systems, both open and closed. Its construction, based on a pressure reducer, check valve and shut-off valve, ensures precise pressure control and safe system operation. It is designed for use with water heaters and hot water tanks.

Construction and application – all in one device

The valve combines several functions, eliminating the need for separate components. It consists of:

• Shut-off valve: allows isolation of the valve for maintenance or repair.
• Check valve with control port: prevents backflow of water from the installation to the water supply network. The control port allows easy verification of the correct operation of the check valve.
• Port for connecting a pressure gauge: enables continuous monitoring of the pressure in the installation (versions with a pressure gauge).
• Safety valve 2115: protects the installation against excessive pressure, equipped with a replaceable stainless steel seat and a strainer for easy cleaning.

Thanks to this solution, the filling process is not only automatic but also monitored and protected. The built-in pressure reducer (compliant with PN EN 1567) allows precise setting of the required filling pressure, and the 0.25 mm mesh filter protects it from contamination.

Key features and benefits for professionals and users

• Versatility: suitable for both open and closed systems.
• Precision: the pressure reducer ensures accurate setting of the filling pressure (adjustment range 1.0 - 5.0 bar, factory setting 1.5 bar).
• Safety: the check valve prevents backflow of water, and the safety valve protects against excessive pressure.
• Durability: made of high-quality materials resistant to corrosion and aging (brass, stainless steel 1.4305). The polyamide fiber-reinforced diaphragm ensures long-term tightness.
• Easy installation and maintenance: simple construction facilitates installation and access to components requiring service. Installation should be carried out in accordance with the flow direction using a flexible hose – the hose should be removed after filling is complete.
• Wide operating temperature range: can be used in systems with temperatures up to 80°C.
• Any mounting position: provides flexibility during installation in various conditions.

The 2128 filling valve is an investment in the reliability and safety of the heating system – both for installers looking for proven solutions and for users who value comfort. Versions with a pressure gauge (reading range 0-4 bar) and without a pressure gauge are available, allowing you to adapt the valve to individual needs.