Flanged Ball Valve - Series B2.1 for Drinking Water - DN 40; L=140mm BRA.B2.100

Product detailed description

This flanged ball valve is commonly used in residential and commercial buildings for controlling the flow of drinking water within HVAC systems and water distribution networks. It is typically found in central heating plants, domestic hot and cold water systems, and industrial water circuits. Installers working on closed-loop systems will find this valve suitable for end-of-pipe connections, where reliable shut-off is required. The valve is designed for environments with fluctuating pressures and temperatures, making it ideal for use in both new and retrofit installations.

The valve is particularly useful in systems where frequent manual shut-off is necessary, such as during maintenance or emergency isolation. Its robust construction and flanged connections allow for secure installation in pressurised water lines. It is not intended for steam systems or flow regulation, and must be selected according to the system’s nominal pressure and temperature range.

Technical parameters

Installation and connection

Installation should be carried out in accordance with the manufacturer’s guidelines. The valve is equipped with flanged ends compatible with EN 1092-1 flanges rated for PN 16. The body must be aligned with the pipe axis to prevent misalignment and stress on the flange gaskets. Prior to tightening the flange bolts, ensure the gasket is correctly seated and free from damage. Common installation errors include over-tightening bolts, which can distort the flange, and failing to verify the seating of the O-rings during assembly. Always check the valve position to ensure it is fully open or closed during installation to avoid damaging the internal components.

Compatibility and accessories

This valve is compatible with standard PN 16 flanged pipework and can be used in conjunction with actuators that conform to ISO 5211 mounting standards. For complete system integration, flange gaskets and sealing compounds appropriate for the application should be selected. No specific accessories are required for basic operation, but actuators or position indicators may be added for automated control. Related products should be selected based on the system's pressure and temperature requirements.

Technical background for designers

The valve operates via a rotating ball with a through-hole that aligns or blocks the flow path. The body is constructed from ductile iron GJS 400-15, offering high strength and resistance to mechanical stress. The ball is made of brass CuTn40Pb2, ensuring smooth operation and resistance to corrosion. The stem is chrome-plated brass, providing durability and resistance to wear. Two NBR O-rings seal the ball against leakage. The full-bore design allows for unrestricted flow when open, minimising pressure drop. The valve is certified for use with drinking water and is not suitable for steam or flow control applications. Proper selection of the valve depends on the system’s operating conditions and the need for reliable shut-off.

Service and operation

Regular inspection of the valve should focus on the condition of the flange gaskets and O-rings, checking for signs of wear or leakage. The valve should be operated periodically to prevent seizing of the ball and stem. No scheduled maintenance intervals are specified in the technical documentation. In the event of leakage, disassembly and inspection of the sealing surfaces and O-rings may be required. Ensure the system is depressurised before carrying out any maintenance work.

Frequently asked questions

Can the valve be used in steam systems?
No, the valve is not suitable for steam applications as stated in the technical specifications.

Is the valve compatible with ISO 5211 actuators?
Yes, the valve has an ISO 5211 interface for actuator mounting, allowing for automated operation.

Can the valve be used for flow regulation?
No, the valve is not designed for flow control and should be used only for on/off functions.

Is the valve certified for use with drinking water?
Yes, the valve is certified for use with drinking water and complies with relevant standards.