Threaded Ball Valve - B3 stainless steel two-piece - 1 inch; L=77mm BRA.B3.622

Product detailed description

This threaded ball valve is commonly used in commercial and industrial buildings for regulating fluid flow in heating, ventilation, and air conditioning (HVAC) systems. Installers and engineers often integrate such valves into closed-loop circuits where reliable shut-off and minimal pressure loss are required. The compact design allows for installation in tight spaces, such as mechanical rooms or under floor systems. It is frequently selected for applications involving potable water, oils, and hydrocarbons due to its corrosion-resistant construction and certified sealing properties.

The two-piece configuration facilitates easier maintenance compared to single-piece designs, allowing for disassembly without removing the entire valve from the piping system. It is particularly suitable for systems where periodic inspection or cleaning is necessary. Due to its full-flow design, this valve ensures minimal turbulence and pressure drop, making it ideal for applications where maintaining consistent flow rates is critical.

Technical parameters

Installation and connection

Installation requires ensuring that the threaded ends match the ISO 228-1 standard for 1 inch nominal pipe size. Use a torque wrench to tighten the connections according to manufacturer specifications to prevent leakage or damage to the threads. Verify that the valve is fully aligned with the pipeline axis to avoid stress on the body or stem. A common mistake during installation is over-tightening, which can deform the sealing surfaces or cause premature wear of the PTFE components. Always close the valve before connecting it to the system to prevent internal damage from residual pressure.

Compatibility and accessories

This valve is compatible with standard piping systems using ISO 228-1 threaded fittings. For secure operation, consider pairing it with locking levers or extension rods where space constraints or frequent operation are factors. Additional accessories such as hand wheels or limit switches may be required depending on the control system requirements. Ensure that all ancillary components are made from compatible materials to prevent galvanic corrosion.

Technical background for designers

The operating principle relies on a rotating stainless steel ball with a through-hole, which aligns or blocks the flow path when turned. The ball and stem are made from AISI 316 stainless steel, offering resistance to corrosive media. The sealing surfaces are lined with PTFE, which provides low friction and long-term stability against chemical attack. Integration into a system should account for thermal expansion and contraction, especially in high-temperature applications, to avoid stressing the valve body or connections. System efficiency depends on proper alignment and avoiding partial opening for throttling, since the valve is not designed for flow regulation.

Service and operation

Maintenance primarily involves inspecting for signs of leakage around the body and stem. Check the integrity of the sealing surfaces during routine inspections, particularly after extended periods of inactivity. Ensure that the locking lever remains functional and free from debris. There are no scheduled service intervals specified in the technical documentation, but regular visual checks are recommended to identify early signs of wear or corrosion.

Frequently asked questions

Can this valve handle steam applications?
No, the valve is not suitable for steam or flow regulation. Its design is intended for on/off service only.

What materials are used for the sealing surfaces?
The sealing surfaces are made of PTFE, which ensures low friction and compatibility with a wide range of fluids including potable water, oils and hydrocarbons.

Is this valve suitable for underground installation?
It is not specifically designed for underground use. If buried installation is required, ensure adequate protection from moisture and mechanical stress.

How does the locking lever improve safety?
The locking lever prevents unintentional rotation of the valve, reducing the risk of accidental opening or closing during operation or maintenance.