Push To Connect NPT Thread Fittings

NPT Push-To-Connect Fittings for Pneumatic Tubing

Pneuforce NPT push-to-connect fittings are designed for connecting inch size pneumatic tubing to components with National Pipe Taper (NPT) threaded ports. These one-touch pneumatic fittings provide a fast, reliable and leak-resistant connection for compressed air and vacuum systems while allowing tubing to be installed, removed and reconnected without damaging the tube or fitting.

NPT push-in fittings are one of the most common pneumatic fitting styles used throughout North America. They are widely used on air cylinders, solenoid valves, manifolds, FRL units, vacuum generators, machine tools and industrial automation equipment where dependable threaded connections are essential.

NPT Push-In Fitting Features

• Designed for inch size pneumatic tubing
• National Pipe Taper (NPT) male threaded connection
• One-touch push-in tube connection
• Suitable for polyurethane and nylon tubing
• Pre-applied thread sealant for quick installation and leak-resistant sealing
• Working pressure: 0-150 PSI / 10 bar
• Proof pressure: 450 PSI / 30 bar
• Vacuum duty: 29.5" Hg / 14 mbar(a)
• Standard operating temperature: 32-140°F / 0-60°C
• All metal fittings rated -40-248°F / -40-120°C
• High-temperature models available upon request

What Is an NPT Push-To-Connect Fitting?

An NPT push-to-connect fitting combines a National Pipe Taper threaded connection with a push-in tube connection. The threaded end screws directly into a pneumatic component while the opposite end accepts pneumatic tubing without the need for compression nuts or additional tube clamps.

Once the tubing is pushed into the fitting, an internal gripping mechanism securely retains the tube while an internal seal prevents compressed air leakage. The tubing can later be removed by pressing the release collar.

What Does NPT Mean?

NPT stands for National Pipe Taper, the most common pipe thread standard used throughout the United States and Canada for compressed air and fluid systems. NPT threads are tapered, meaning the threads gradually become tighter as they are assembled to create a pressure-tight seal.

Many Pneuforce NPT push-in fittings include factory-applied thread sealant to simplify installation while helping reduce air leakage during assembly.

Common Applications

• Pneumatic Cylinders – Connect compressed air tubing directly to cylinder ports.
• Solenoid Valves – Reliable connections for directional control valves and valve manifolds.
• Vacuum Venturi – Leak-resistant tubing connections for vacuum generation systems.
• FRL Units – Filters, regulators and lubricators.
• Automation Equipment – Packaging machines, assembly systems, robotics and OEM machinery.
• Compressed Air Systems – Industrial air distribution and pneumatic controls.

Why Choose NPT Push-In Fittings?

NPT threaded push-to-connect fittings significantly reduce installation time compared to traditional compression fittings while maintaining a secure threaded connection. Their compact design allows pneumatic tubing to be routed neatly inside machinery, reducing assembly time and simplifying maintenance.

Because NPT threads are the North American standard, these fittings are ideal for new machine construction, equipment upgrades and maintenance of existing compressed air systems.

Choosing the Correct NPT Push-In Fitting

When selecting an NPT push-in fitting, confirm the tubing outside diameter, NPT thread size, fitting configuration, operating pressure and installation space. Common styles include straight connectors, elbows, tees, bulkhead fittings, reducers, unions and swivel fittings.

For maximum reliability, always use correctly sized tubing and tighten NPT threads according to recommended installation practices to avoid over-tightening.