This Olive Union Assembly BSP fitting includes two nuts and two sleeves (ferrules), engineered for joining tubes securely under British Standard Pipe (BSP) threading. It enables seamless connections between two tubing segments by compressing the sleeves via the nuts, creating a tight, leak-proof joint without welding or soldering. Ideal for plumbing, gas, hydraulic, and instrumentation systems, this union accommodates varying tube outer diameters (OD) while maintaining high resistance to corrosion and mechanical stress. Made from robust brass or alloy materials, the assembly ensures durable performance in industrial, commercial, and domestic environments. Easy to assemble and disassemble for maintenance, this union assembly is frequently used where quick, reliable connections are needed without complex tooling.