Brass union is the type of pipe connection fittings which allows obtaining quick release connections, where appropriate, for devices that require periodic assembly / disassembly for maintenance (strainers, metering devices, etc.). STA company produces brass unions (straight and elbow) with plating and without, as well as brass crimp sleeves for quick repairs of pipelines with diameters Dn15-50mm. Such brass couplings allow an easy and simple connection of the pipeline with a smooth section of pipe without making pipe threads on it - thus makes it possible to connect pipes of different materials (stainless steel, copper, brass, polymers, etc.) which cannot be connected by common threading or welding.