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Pneumatic fittings are essential components in air-powered systems, designed to connect, control, and route compressed air within industrial automation environments. Engineered for quick installation, secure sealing, and long-lasting durability, these fittings ensure seamless connections between pneumatic components such as air cylinders, valves, and tubing.
Available in a variety of types including straight, elbow, tee, Y, and cross shapes, as well as threaded or push-in styles, pneumatic fittings are widely compatible with PU, PE, and nylon tubes. Made from materials such as brass, nickel-plated brass, stainless steel, or engineering plastics, they can be selected according to application needs and working environments.
Push-to-connect design for fast, tool-free installation
Leak-proof sealing ensures stable pressure transmission
Multiple thread options: M, G (BSP), NPT, PT, UNF, etc.
Corrosion-resistant materials for harsh industrial settings
Wide range of shapes and sizes to meet various piping layouts
Whether for compact machinery or complex automation lines, pneumatic fittings play a critical role in improving efficiency, reliability, and ease of maintenance in pneumatic systems.
| Connector Type | Material | Tube Size | Thread Type | Available Thread Sizes | Applicable Tube Types |
| Straight (PC) | Brass / Nickel-plated Brass | Ø4, Ø6, Ø8, Ø10, Ø12, Ø14, Ø16 | M, G (BSP), NPT, PT | M5, M6, M10×1, G1/8", G1/4", G3/8", G1/2" | PU tube, Nylon tube, PE tube |
| Male Elbow (PL) | Brass / Composite Body | Same as above | M, G (BSP), NPT, PT | Same as above | Same as above |
| Female Elbow (PLF) | Brass | Same as above | G (BSP), PT, NPT (Internal) | G1/8", G1/4", G3/8", G1/2" | Same as above |
| Tee (PT) | Brass / PBT Composite | Same tube sizes | - | - | PU, PE, Nylon tubes |
| Male Branch Tee (PTM) | Brass | Same as above | G, NPT, PT (External) | G1/8", G1/4", G3/8" | Same as above |
| Female Branch Tee (PTF) | Brass | Same as above | G, NPT, PT (Internal) | Same as above | Same as above |
| Y Type (PY) | Brass / Composite | Same as above | - | - | PU, PE, Nylon tubes |
| Cross (PX) | Brass / Composite | Same as above | - | - | Same as above |
| Bulkhead Union (PUC) | Brass / Stainless Steel | Ø4 to Ø16 | - | - | Used for panel mounting |
| Reducer Union (PUC-R) | Brass | Ø6→Ø4, Ø8→Ø6, Ø10→Ø8 etc. | - | - | Connects different tube sizes |
| End Plug / Cap | Brass | N/A | M, G, PT, NPT | M5, G1/8", G1/4", etc. | Used to close threaded ports |
| Quick Coupling (Male/Female) | Brass / Stainless Steel | - | G, PT, NPT | G1/4", G3/8", G1/2" | Used for rapid disconnect |
To meet the diverse requirements of pneumatic systems across industries, we have developed a tiered approach to our plastic pneumatic fittings, offering low-end, mid-range, and high-performance options based on material quality and processing technology. For entry-level applications, such as light-duty air tools or low-pressure systems, we use cost-effective plastics like PP (polypropylene) and PE (polyethylene), which provide basic chemical resistance and acceptable mechanical properties.
Mid-tier fittings, widely adopted in general automation, are made from high-grade PBT (polybutylene terephthalate), favored for its excellent dimensional stability, anti-aging performance, and resistance to vibration and fatigue. This material is commonly used by brands like Airtac in their PU and PUC series push-in fittings.
For high-end industrial demands, such as precision equipment, robotics, and harsh environments, we apply advanced materials like flame-retardant and glass-fiber-reinforced PBT, paired with brass or SUS304/316 stainless steel gripping rings and threaded inserts to enhance mechanical strength and corrosion resistance. These specifications are comparable to SMC's KQ2 and KQG2 series, which are known for their reliability under higher pressure and temperature conditions.
Furthermore, we implement precision injection molding and strict dimensional tolerance controls to ensure leak-proof performance, long service life, and compatibility with international pneumatic tubing standards. Our three-tier solution helps customers choose the right fitting according to budget, operating environment, and durability expectations, delivering real value across all levels of automation.
To meet the diverse needs of global customers, ANRUK offers an extensive range of pneumatic fitting materials and specifications. Our product line covers all mainstream materials, including high-quality plastics, carbon steel, 304 and 316 stainless steel, brass, aluminum alloy, and even custom metal blends. Whether customers require threaded, push-in, one-touch, or high-pressure connectors, we can provide precision-engineered solutions based on different processing techniques such as injection molding, precision CNC machining, polishing, electroplating, and more. Our fittings are widely used in automated production lines, automotive engineering, semiconductor equipment, medical devices, packaging machinery, and environmental protection industries. With extensive cooperation across Europe, North America, Southeast Asia, and the Middle East, we have successfully met the complex demands of clients from various industrial sectors. ANRUK is committed to providing customized, high-performance pneumatic connection solutions for every application scenario.
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