Lead-free brass valves are designed to meet regulatory and safety requirements for applications involving potable water and fluid control systems. Their composition is carefully selected to reduce lead content while maintaining functional properties suitable for everyday use. Understanding the materials used in these valves helps explain their performance and application scope.
The primary component of lead-free brass valves is copper. Copper typically forms the largest percentage of the alloy and provides good thermal conductivity, corrosion resistance, and workability. Its presence supports the valve's ability to withstand repeated operation and exposure to water.
Zinc is the second major element in lead-free brass alloys. It is added to improve mechanical strength and castability. By adjusting the copper-to-zinc ratio, manufacturers can achieve specific physical properties, such as hardness and tensile strength, suitable for valve bodies and internal components.
To replace the role traditionally played by lead, alternative alloying elements are introduced in controlled amounts. These may include bismuth, silicon, or phosphorus. Bismuth is often used because it improves machinability without dissolving significantly into the copper matrix, helping maintain structural stability. Silicon can enhance strength and corrosion resistance, making it suitable for pressure-containing parts.
Tin may also be included in small quantities. It contributes to improved corrosion resistance, particularly in water systems with varying chemical conditions. In some formulations, tin helps reduce the risk of dezincification, which can occur in certain environments.
In addition to the base alloy, lead-free brass valves may contain elastomeric seals and internal components made from materials such as EPDM or PTFE. While not part of the brass alloy itself, these materials are essential to valve sealing performance and compatibility with fluids.
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The Press joining is a connection to make permanent and not reversible deform of the fittings on the pipe thus leading to a perfect mechanical joint, while the O-Ring provides for the hydraulic tightening connection. Pressing provides for a constant quality joining, easily reproduced and with a minimum physical effort by the operator.
A Mixed connection fittings to other systems are made using bronze thread parts with press ends. The thread will be made to meet your local regulation.
Specification：Male/Press end
Available dimensions:
15x1/2”| 18x 1/2”| 18x3/4”| 22x3/4”