Series of compression fittings for brass tubes. The ogive crushing onto the tube, by screwing down the external nut, allows to get a safe connection even at high pressures. The ogive is single cone. The fitting seats, the ogives and the nuts are conforming to DIN 3870-3861 standards. The series of compression fittings is also suitable for connecting "soft" tubes (Rilsan, Polyurethane, Nylon etc.), by applying a tube insert inside the tube. Available in different configurations, with taper BSPT threads and BSP threads, in various sizes.