Compressed Air Connection Technology
Pneumatic Fittings — Push-in Fittings for Compressed Air Connection Technology
Push-in fittings connect tubing and components in pneumatic systems quickly, securely and without tools. At STASTO you will find the complete range of pneumatic fittings in three material lines — nickel-plated brass and stainless steel 1.4404 for operating pressures from –0.99 to 20 bar, and POM for –0.99 to 18 bar. From straight male stud fittings to rotatable elbow and tee fittings through to bulkhead fittings, select the right design based on thread, tube outer diameter and installation requirements.
Push-in Fittings in Three Material Lines
Why STASTO
Pneumatic Push-In Fittings — A Complete System
From straight push-in fittings to swivel elbow fittings — matched to thread, material and tubing.
Three Material Lines from One Range
Nickel-plated brass for standard applications, stainless steel 1.4404 for food, pharmaceutical and aggressive environments, POM for lightweight plastic applications — consistently matched to tubing outer diameter and thread.
Tool-Free Snap-In Push Mechanism
Insert the tube, snap in, sealed: the push-in connection with retaining ring and O-ring saves assembly time and can be released multiple times.
Complete Range of Body Styles
Straight, elbow, T, Y, cross, bulkhead and union — including 360° swivel series for free orientation of the tubing routing.
Matching Tubing and Pipe Programme
Plastic tubing in the PA, PE, PU and CP series as well as compressed air hose in the CA series are available in the same range — matched to the push-in fittings.
Select configurations
Push-in fittings by design
Select the right design based on thread type, tube outer diameter and installation requirements.
Guide
What are pneumatic push-in fittings?
Function, material selection and design — explained concisely for the right choice.
Function & Material
- Operating principle
- The tube is inserted into the fitting; a collet grips it positively, an O-ring seals the connection. To release, press the release ring — the connection is reusable multiple times.
- Nickel-plated brass
- Robust standard material for general compressed air applications, operating pressure –0.99 to 20 bar.
- Stainless steel 1.4404
- For hygienic, pharmaceutical and corrosion-resistance requirements, operating pressure –0.99 to 20 bar.
- POM
- Lightweight and cost-effective for plastic applications, operating pressure –0.99 to 18 bar.
Design & Tube Selection
- Which design?
- Straight for direct connection, elbow for redirection in tight spaces, swivel/360° for free orientation, T/Y/cross for branching, bulkhead for panel mounting.
- Selection criteria
- The key factors are thread type, tube outer diameter and installation situation.
- Matching tube
- Push-in fittings are designed for defined tube outer diameters. Matching plastic tubing in the PA, PE, PU and CP series as well as compressed air hose CA can be found in the STASTO pneumatics range.
Material comparison
Brass, stainless steel or POM?
The three material lines in direct comparison for the right selection.
| Nickel-plated brass | Stainless steel 1.4404 | POM | |
|---|---|---|---|
| Operating pressure | –0.99 to 20 bar | –0.99 to 20 bar | –0.99 to 18 bar |
| Typical application | General compressed air, standard | Food, pharma, corrosion | Lightweight, plastic applications |
| Property | Robust, broad series depth | Corrosion-resistant, hygienic | Lightweight, cost-effective |
| Push-in mechanism | Tool-free, repeatedly releasable | Tool-free, repeatedly releasable | Tool-free, repeatedly releasable |
Applications
Pneumatic fittings in use
From industrial plant engineering to hygienic production — the right design and material for every application.
Mechanical & plant engineering
Tubing connections for cylinders, valves and grippers. Rotatable elbow series such as PI16-360 simplify installation in confined axis spaces.
Food & pharmaceutical production
Stainless steel 1.4404 for cleaning-intensive, corrosive environments with operating pressures up to 20 bar.
Maintenance & retrofit
Repeatedly releasable push-in connections allow fast component replacement without tools.
Handling & Lightweight Construction
POM push-in fittings for weight-sensitive assemblies up to 18 bar.
Compressed Air Distribution
Straight, T- and cross connectors for clearly arranged tubing runs and branches in compressed air networks.
Aggressive Environments
Stainless steel 1.4404 withstands corrosive media and demanding atmospheres.
Related products
The Matching Tubing and Pipe Programme
Push-in fittings are designed for defined tubing outer diameters — here you will find the matching hoses and connecting elements.
Frequently Asked Questions
FAQ on pneumatic fittings
Answers to the most important questions about push-in fittings, materials and body styles.
What is a pneumatic fitting?
A pneumatic fitting is a push-in fitting that connects tubing to pneumatic components tool-free and pressure-tight. The tube is inserted, a collet locks it in place and an O-ring provides the seal.
What operating pressure is possible?
Nickel-plated brass and stainless steel 1.4404 are rated for up to 20 bar, POM for up to 18 bar — each down to –0.99 bar in the vacuum range.
What is an adjustable elbow fitting?
An adjustable elbow fitting is a rotatable elbow from the 360° series whose tube outlet can be freely orientated. At STASTO these include series such as PI16-360, PI14-360 and PI19-360.
What is a bulkhead fitting?
A bulkhead fitting is a pressure-tight feed-through for panels or enclosures. At STASTO it is available as series PI27 in brass.
Are the fittings reusable?
Yes, the push-in connection can be released via the release ring and reconnected. It is reusable multiple times.
Which tubing is compatible?
Compatible tubing includes series PA, PE, PU and CP, matched to the outer diameter specified for the fitting. These are available in the STASTO pneumatics range.
Select now
The right pneumatic fitting for your application
Choose body style and material — or get advice on thread, pressure range and tubing selection.