These technopolymer fittings are designed with various features for high efficiency. They feature brass inserts, nickel-plated brass collets, and NBR seals. The gas cylinder is as per ISO-228 (BSP). The units operate at 0.9 bar minimum operating pressure, 6 bar maximum operating pressure, and -20° to 60°C temperature. The connecting tube is composed of a combination of Rilsan polyamide 6 - 11-12, polyethylene, PU, and polyester Hytrel.