WESQDB20 - Western Enterprises Quick Connect Set with Check Valves, Hose-to-Hose, B-Size

Technical Overview of the Western Enterprises QDB20 Quick Connect Set

The Western Enterprises QDB20 Quick Connect Set is a precision-engineered gas distribution component designed for Hose-to-Hose applications in industrial, welding, and laboratory environments. This set facilitates the rapid connection and disconnection of oxy-fuel lines while integrating critical safety features directly into the coupling mechanism. The assembly is constructed from high-grade brass, ensuring substantial durability and resistance to the corrosive elements often present in industrial atmospheres. The unit is rated for a maximum working pressure of 200 PSIG, making it suitable for a wide range of standard oxy-fuel applications.

A primary technical feature of the QDB20 is the integration of reverse flow check valves. These valves are designed to provide instant closure in the event of back-pressure, effectively preventing the reverse flow of gases which can lead to dangerous mixing within the hose lines. While these check valves provide a fundamental layer of safety, they are complemented by a double seal socket connection. This dual-seal design ensures a gas-tight interface even under dynamic conditions where the hose may be subjected to movement or vibration. The locking mechanism is spring-loaded, providing positive engagement that responds to fingertip action, ensuring that the connection is secure before gas flow is established.

Compliance and standardization are key aspects of the QDB20 design. The connectors utilize standard B-Size 9/16"-18 threads, ensuring compatibility with the vast majority of North American oxy-fuel equipment. Crucially, the oxygen and fuel gas connectors are mechanically non-interchangeable. The Oxygen connector adheres to CGA 022 standards, while the Fuel Gas connector adheres to CGA 023 standards. This physical differentiation makes it impossible to accidentally cross-connect oxygen and fuel lines, a vital engineering control for preventing catastrophic accidents. The product is UL Listed, verifying its adherence to rigorous safety and performance standards required for professional use.

The set includes both the QDB21 (Oxygen) and QDB22 (Fuel Gas) assemblies. Users should note that while the brass construction provides long service life, the product contains lead and is labeled in accordance with California Proposition 65. The QDB20 represents a robust solution for facility managers and safety engineers looking to implement reliable, code-compliant quick-connection systems in their gas distribution networks.