... PUC-union straight fitting) Thread: Inch thread, Metric thread, NPT, PT, BSPP As a Fitting manufacturer,include pneumatic Fittings, Push in ... Ball Valve, Metal Fitting,Mini Fitting,Quick Push to Connector, brass fitting miniature pneumatic,push on fittings, inch fitting, NPT fittings, BSP ... models are available in both inch and metric sizes. Push in fittings with PT & NPT(PUC-union straight fitting)