Threaded Ball Valve - B3 series stainless steel two-piece - 6/4'; L=105mm BRA.B3.622

Product detailed description

This two-piece ball valve is designed for use in residential and commercial buildings, particularly in central heating systems, hot and cold water circuits, and industrial applications involving oils and hydrocarbons. It provides reliable shut-off for media such as potable water, fuel and light oils. The compact design allows for installation in tight spaces while maintaining full flow capacity. Its locking lever ensures secure positioning during operation.

The valve is commonly found in HVAC systems, underfloor heating manifolds, and pipe networks where frequent manual shut-off is required. It is suited for both new installations and system retrofitting. The antistatic design minimises risks in environments with flammable media, and compliance with ATEX standards ensures suitability for hazardous areas according to EU directive 2014/34/EU.

Technical parameters

Installation and connection

Before installation, ensure the pipeline is clean and free of debris to prevent damage to the sealing surfaces. Use a torque wrench to tighten the threaded connections to the manufacturer’s recommended specifications. The valve should be installed in a position that allows easy access for operation and inspection. Check the alignment of the valve body with the pipeline to avoid stress on the connections. Ensure the locking lever is positioned for convenient operation after installation.

Common errors include overtightening the threads, which can damage the PTFE seals, and installing the valve in a closed position when the system contains pressurised fluid. Always open and close the valve slowly to reduce wear on internal components. Verify the direction of flow if applicable, though this valve is generally bi-directional.

Compatibility and accessories

This valve is compatible with standard threaded fittings and pipes within the specified ISO 228-1 thread dimensions. It works well with expansion vessels, circulator pumps and heat exchangers in closed-loop systems. For complete system functionality, additional components such as pressure relief valves and temperature sensors may be required. No specific accessories are listed for this model.

Technical background for designers

The valve operates via a rotating stainless steel ball with a bore that aligns with the flow path when open. The ball is sealed against the valve body using PTFE, providing resistance to abrasion and chemical corrosion. The body material, A351 CF8M stainless steel, offers good mechanical strength and resistance to scaling and pitting in water-based systems. The full-bore design minimises pressure loss and facilitates cleaning of the system. The antistatic design reduces the risk of static discharge during operation in environments with flammable media.

Service and operation

Periodic inspection of the valve’s external condition and operation is recommended. Check for signs of leakage around the threads and verify smooth movement of the handle. If resistance is encountered during operation, it may indicate dirt accumulation or wear on the sealing surfaces. There are no scheduled service intervals provided in the documentation, but any abnormal operation should prompt a detailed inspection or replacement if necessary.

Frequently asked questions

Can this valve be used for steam applications?
No, it is not suitable for steam due to the PTFE seals and design limitations.

Is the valve suitable for regulating flow?
No, it is a shut-off valve and not intended for throttling or flow regulation.

Can this valve be used for potable water systems?
Yes, it is certified for use with potable water.

Does the valve require special tools for installation?
No, standard plumbing tools are sufficient for tightening the threaded connections.