Product categories
- AIR MACHINE ACCESSORIES, FITTINGS AND VAC REPLACEMENT PARTS
- HYDRAULIC HOSE FERRULES - FERRULES MANUFACTURER
- INDUSTRIAL AND AUTOMITIVE COUPLERS & CONNECTORS
- PNEUMATIC BLOW GUN KITS AND BLOW GUN PRODUCTS
- PNEUMATIC HOSES
- PNEUMATIC, AUTOMOTIVE HOSE CRIMPERS AND DIES
- TIRE INFLATOR CHUCKS AND AIR FITTINGS
- TIRE INFLATOR GAUGE PRODUCTS
- Uncategorized
- VALVES PARTS PRODUCTS
- WATER BIBBS AND UTILITY WATER NOZZLES
Top rated products

Pneumatic Universal Couplers
Diamond-U has been a leading manufacturer of industrial pneumatic products for over a century. We have helped different business owners and technicians alike from all over the world to find quality products to complement their air compressors & pneumatic systems. At Diamond-U Products, Inc., we will fulfill your order whether you need one unit or need to purchase in bulk. You can also count on us if you need customized products and assemblies to suit your company’s needs.
What are the Industrial Uses of Universal Couplers?
Universal air couplers are often used in pneumatic industrial applications to connect air hoses with compressed airlines, air compressor machines, and other air tools. The air couplers can transport compressed air, water, or chemicals. Our couplers come with a push-to-connect design with a protective sleeve that maintains the connection until the plug is ejected.
The couplings are mainly made of carbon steel, stainless steel, or brass materials. Carbon steel couplers are a popular choice since they are durable and function optimally in noncorrosive environments.
Brass couplers are softer than other metal couplings, making them easier to thread together. They also offer excellent corrosion resistance properties. Stainless steel couplers offer the best rust and corrosion resistance properties, perfect for applications in high-humidity environments.
Get Superior Universal Couplers at Diamond-U Now!
Whether you want steel or universal brass couplers, Diamond-U has the product solutions you need. We stock a wide range of male and female couplers perfect for various pneumatic applications. Some of the pneumatic couplers you can find at Diamond-U include:
- ¼” Female Universal Coupler– The universal brass coupler can hold up to 150 pounds per square inch and temperature range of 40F -250F.
- ¼” Male Universal Coupler– Our ¼ male universal coupler is made of steel and can also hold up 150 PSI and -40F-250F temperature range. You can get the coupler for as low as $22.77.
Do you want to equip your pneumatic systems with quality universal air couplers? Diamond-U has got you covered! Contact us to discover more and purchase our coupler products today.