Festo Tubing And Fittings
Festo's QS series is their standard push-in (“push-to-connect”) fitting line for pneumatics — you push the tube in and it seals and locks itself, no tools needed. Here's the overview The QS system includes well over 1,000 types of standard and function fittings, letting you flexibly combine tubing and fitting types. Festo Built in Standard and Mini series, using PBT plastic and nickel-plated brass, rated for compressed air, vacuum, or water depending on the specific product's certification. Available in straight, L/LL, T, X, Y shapes, plus bulkhead versions. Covers roughly 80% of typical automation connection tasks, with tubing outer diameters of 4, 6, 8, 10,12, 14 and 16mm and connecting threads from M5 up through R½/G½