Air Compressor Adaptors and Fittings
Industrial-Grade Adaptors and Fittings Built to Last
JHFOSTER offers a wide selection of high-performance air compressor adaptors and fittings for industrial compressed air systems. Our inventory is built to meet the rigorous demands of industrial environments and ranges from quick connects and couplers to elbows, tees, plugs, and nipples.
We understand that compressed air systems require precision, compatibility, and reliability. That’s why we stock over 300 adaptor and fitting products made from trusted materials like brass, stainless steel, and plated steel. Every part we stock was selected for its durability and long service life.
JHFOSTER delivers the fittings you need with expert support and fast fulfillment for expanding, repairing, or upgrading your air line connection.
Our Most Popular Air Compressor Adaptors and Fittings
These commonly used adaptors and fittings are trusted by industrial maintenance teams and system engineers:
| Brass Quick Connect Coupler – ¼” NPT Heavy-duty coupler with high flow rate and corrosion resistance for shop air systems.  Contact Us to Order | Steel Industrial Interchange Plug – ⅜” NPT Compatible with most U.S. air tools and hose systems; precision-threaded.  Contact Us to Order | 90° Elbow Fitting – ½” NPT, Brass Ideal for tight installations requiring directional air flow control.  Contact Us to Order |
| Tee Connector – ¼” NPT, Forged Steel Distributes air across three lines for tool, gauge, or manifold integration.  Contact Us to Order | Push-to-Connect Fitting – ¼” OD Tube Secure, tool-free installation for rapid air line changes and low-leakage sealing.  Contact Us to Order | Reducer Bushing – ¾” to ½” NPT, Brass Step-down thread sizes for compressor-outlet-to-hose connection.  Contact Us to Order |
| Swivel Adaptor – ¼” Male-to-Female NPT Prevents hose kinking and allows flexible tool movement.  Contact Us to Order | Dual-Port Manifold – ⅜” NPT Inlet, Dual ¼” Outlets Split a single air supply for multi-tool operation.  Contact Us to Order | Inline Check Valve – ½” NPT Brass Maintains system pressure and prevents backflow between components.  Contact Us to Order |
| Hex Nipple – ½” NPT Steel Strong threaded connector for joining hoses, valves, or other fittings.  Contact Us to Order | Close Nipple – ¼” Brass Compact, full-threaded fitting for minimal spacing applications.  Contact Us to Order | Plug and Coupler Set – ¼” Universal Style Compatible with both automotive and industrial interchange air lines.  Contact Us to Order |
Air Compressor Adaptors and Fittings Features
When selecting air compressor adaptors and fittings, choosing the right specifications ensures safe, efficient, and leak-free operation. There are a few key factors to consider:
Material Type
- Brass – Resists corrosion and is easy to thread and seal.
- Steel – Strong and impact-resistant, suitable for rugged industrial use.
- Stainless Steel – Preferred for corrosive or sanitary environments.
Pressure Ratings
- Available fittings support working pressures up to 300 psi and beyond, depending on size and material.
Thread Types and Sizes
- We carry both NPT (National Pipe Thread) and specialty threads in sizes from ⅛” to 1″ or larger.
Compatibility
- Our fittings are compatible with most U.S. standard compressed air systems and pneumatic tools.
Durability
- All products are designed for industrial durability, with reinforced threading and plating options to extend service life.
Flow Performance
- Select fittings sized for optimal airflow, with minimal pressure drop, to keep your system operating at full efficiency.
Safety
- Proper sealing, check valves, and blowout-resistant designs help reduce the risk of failure or air leaks.
Contact Us About Air Compressor Adaptors and Fittings
JHFOSTER proudly supports industrial operations across Minnesota, Iowa, North Dakota, South Dakota, and Wisconsin. We ship to customers throughout the Upper Midwest with fast turnaround and expert support.
If you’re not sure which fitting is right for your system, our team is ready to help.
Request More Information
Please fill out the form below and our sales team will contact you shortly to assist with pricing, availability, and compatibility.