| 1 | Straight Push-In Fitting | Inline connector | Tube-to-female-thread or tube-to-tube connection in a straight line | 4, 6, 8, 10, 12 mm; 1/4, 5/16, 3/8, 1/2 in | G, R, NPT, or metric thread options | Usually up to 10 bar at room temperature; design-dependent | Approximately -20°C to +80°C with standard polymer tubing | Nickel-plated brass, stainless steel, engineered polymer, NBR or FKM seal | General air distribution, valve ports, cylinders, control panels |
| 2 | 90-Degree Elbow | Directional connector | Tube-to-thread connection with a fixed right-angle outlet | 4, 6, 8, 10, 12 mm; 1/4, 3/8, 1/2 in | G, R, NPT, or metric thread options | Usually up to 10 bar; flow capacity varies by bore size | Approximately -20°C to +80°C for standard versions | Plated brass or polymer body with elastomer sealing element | Compact machine layouts, air preparation units, restricted installation spaces |
| 3 | Swivel Elbow | Adjustable directional connector | Tube-to-thread connection with a rotating or adjustable elbow body | 4, 6, 8, 10, 12 mm; 1/4, 3/8, 1/2 in | G, R, NPT, or metric thread options | Usually up to 10 bar; pressure rating depends on swivel construction | Approximately -20°C to +80°C for standard sealing materials | Nickel-plated brass, stainless steel, polymer, NBR or FKM seals | Moving pneumatic assemblies, robotic tooling, cylinders, flexible routing |
| 4 | Tee Connector | Branch connector | Three-way connection for splitting or joining an air circuit | 4, 6, 8, 10, 12 mm; 1/4, 3/8, 1/2 in | Push-in tube ports; threaded variants also available | Usually up to 10 bar in standard industrial service | Approximately -20°C to +80°C | Polymer or plated brass body; elastomer seals where applicable | Parallel actuator circuits, sensor branches, manifold extensions |
| 5 | Y Connector | Low-loss branch connector | Three-way connection with two outlets arranged in a Y geometry | 4, 6, 8, 10, 12 mm; 1/4, 3/8 in | Push-in tube ports are most common | Usually up to 10 bar; depends on port size and body material | Approximately -20°C to +80°C | Acetal, polyamide, nickel-plated brass, NBR or FKM seals | Air distribution with smoother routing and reduced bending stress |
| 6 | Cross Connector | Multi-branch connector | Four-way connection for intersecting or distributing pneumatic lines | 4, 6, 8, 10, 12 mm; 1/4, 3/8 in | Push-in tube ports; threaded versions available | Usually up to 10 bar in standard compressed-air applications | Approximately -20°C to +80°C | Engineered polymer, plated brass, and elastomer sealing components | Compact manifolds, test circuits, synchronized air distribution |
| 7 | Bulkhead Connector | Panel-mount connector | Tube connection passing through a panel, frame, or enclosure wall | 4, 6, 8, 10, 12 mm; 1/4, 3/8 in | Locknut or threaded panel-mount design | Usually up to 10 bar; panel thickness and seal design are relevant | Approximately -20°C to +80°C | Plated brass or polymer body with sealing washer and retaining nut | Control cabinets, machine guarding, modular equipment frames |
| 8 | Tube Reducer | Size-transition connector | Connects two tubes with different outside diameters | Typical combinations include 8-to-6, 10-to-8, and 12-to-10 mm | Usually push-in tube-to-tube connection | Usually up to 10 bar when both connected tubes are rated accordingly | Approximately -20°C to +80°C | Acetal, polyamide, plated brass, NBR or FKM sealing elements | Equipment upgrades, mixed-size circuits, flow-line transitions |
| 9 | Tube Union | Straight tube-to-tube connector | Joins two tubes of the same outside diameter in a straight line | 4, 6, 8, 10, 12 mm; 1/4, 5/16, 3/8, 1/2 in | Push-in tube ports; some versions use compression connections | Usually up to 10 bar for industrial compressed air | Approximately -20°C to +80°C | Polymer or plated brass body with elastomer seals | Tube repairs, extensions, machine assembly, maintenance replacement |
| 10 | Tube-to-Thread Adapter | Interface adapter | Converts a push-in tube connection to a male or female threaded port | 4, 6, 8, 10, 12 mm; 1/4, 3/8, 1/2 in | G, R, NPT, or metric thread options | Usually up to 10 bar; thread sealing method affects performance | Approximately -20°C to +80°C for standard versions | Nickel-plated brass, stainless steel, polymer, NBR or FKM seals | Connecting tubing to valves, regulators, cylinders, gauges, and manifolds |