Press Fittings for Stainless Steel & Industrial Pipework
Press fittings are mechanical pipe fittings designed to join compatible pipe quickly and securely using a dedicated press tool. Unlike welded, threaded or soldered connections, press fit fittings are joined by mechanically pressing the fitting onto the pipe.
Air Energy supplies Europress press fittings for stainless steel and carbon steel pipe systems, including elbows, tees, reducers, couplings, adaptors, flanges, caps and other specialist fittings.
Europress press fittings are available in 304 and 316L stainless steel, with sizes from approximately 15 mm through to 158 mm across the available press-fit system. Selected fittings also feature the Europress Press Check indicator, making it easier to identify joints that have been pressed.
Need help choosing the right press fitting? Tell us your pipe material, pipe size, application and what you are connecting to. We can help you select the appropriate fittings and compatible press tool.
Press Fittings at a Glance
| Feature | Europress Press Fittings |
|---|---|
| Fitting type | Mechanical press-fit pipe fittings |
| Materials | 304 stainless steel, 316L stainless steel and carbon steel options |
| Pipe systems | Compatible stainless steel and carbon steel press-fit pipe systems |
| Sizes | Approximately 15 mm to 158 mm depending on fitting and system |
| Joining method | Mechanical pressing with a compatible press tool and jaw |
| Press indicator | Press Check sleeves available on compatible fittings up to and including 54 mm |
| Applications | Compressed air, water, industrial services, gases and other approved applications |
What Are Press Fittings?
Press fittings are pipe connectors that use mechanical pressing to create a secure connection between the fitting and compatible pipe.
Instead of welding the pipe, the fitting is positioned over the pipe and compressed using a specified press tool and jaw. The pressing process forms the mechanical connection and compresses the fitting's sealing element around the pipe.
This makes press fitting systems particularly useful where pipework needs to be installed without welding, soldering or other hot-work processes.
Press fittings are also sometimes called press fit fittings, press-fit pipe fittings, pipe press fittings or crimp fittings. The terminology varies, but the important consideration is compatibility between the pipe, fitting, sealing material, press profile and pressing tool.
How Do Press Fit Fittings Work?
A press fitting contains a shaped socket and sealing element designed to accept the specified pipe. Once the pipe has been correctly prepared and inserted, a compatible press tool applies controlled radial force to the fitting.
The result is a mechanically formed connection between the pipe and fitting, with the sealing element providing the required seal for the approved application.
How to Install a Press Fitting
- Cut the pipe. Cut the pipe squarely to the required length.
- Deburr the pipe. Remove internal and external burrs and clean the pipe as required.
- Check insertion depth. Mark the pipe to confirm that it is fully inserted into the fitting.
- Insert the pipe. Push the pipe fully into the fitting without damaging or displacing the O-ring.
- Select the correct press jaw. Use the profile and size specified for the fitting system.
- Position the press tool. Align the jaws correctly around the fitting.
- Complete the pressing cycle. Activate the tool and allow the manufacturer's specified cycle to finish.
- Inspect the completed joint. Check the fitting and press indicator where fitted.
Always follow the installation instructions supplied with the specific press fitting system. The correct pipe, fitting, O-ring, press profile and tool must be used together.
Why Use Press Fittings?
Press-fit systems provide an alternative to conventional welded, threaded and soldered pipe connections. For suitable applications, they can simplify pipe assembly and reduce the amount of hot work required on site.
| Press Fit | Traditional Welding |
|---|---|
| Mechanical joining process | Thermal joining process |
| No welding at the joint | Requires welding equipment and process controls |
| No naked flame at the press connection | Heat and welding hazards need to be managed |
| Consistent mechanical pressing process | Joint quality depends on the welding process and workmanship |
| Suitable for repetitive pipe assembly | May require more preparation and hot-work controls |
The actual time and labour savings depend on pipe diameter, access, system design, preparation and the installation environment. Press-fit should be selected based on the application and manufacturer's requirements rather than speed alone.
Europress Stainless Steel Press Fittings
Europress stainless steel press fittings are designed for use with compatible stainless steel pipe systems. Air Energy supplies Europress fittings in both 304 and 316L stainless steel.
316L stainless steel contains molybdenum, which provides increased resistance to corrosion in applications where the additional corrosion resistance is beneficial. 304 stainless steel is widely used for general industrial and commercial applications where its material properties are appropriate.
316L Stainless Steel Press Fittings
316L press fittings are commonly selected for applications where corrosion resistance is particularly important, including demanding industrial, chemical, marine and hygienic environments.
304 Stainless Steel Press Fittings
304 stainless steel press fittings provide a practical option for many general industrial and commercial pipework applications where 304 stainless steel is suitable for the service conditions.
The correct stainless steel grade should always be selected according to the fluid, temperature, pressure, environment and applicable requirements of the installation.
Europress Press Check: Know When a Fitting Has Been Pressed
One of the distinguishing features of compatible Europress press fittings is the Press Check sleeve.
The Press Check sleeve provides a visible indication of the pressing operation. On compatible fittings, the sleeve is designed to tear and come away when the fitting is pressed, making an unpressed fitting easier to identify during installation.
| Press Check Colour | Application |
|---|---|
| Blue | Stainless steel press fittings |
| Red | Carbon steel press fittings |
| Yellow | Gas press fittings |
Europress Press Check sleeves are available on compatible press fittings up to and including 54 mm. The visible indicator provides an additional installation check before pipework is commissioned.
Press Check does not replace the required inspection, testing and commissioning procedures for the pipework system.
Types of Press Fittings
The right press fitting depends on the direction of the pipe, the required branch or connection, pipe diameter and the equipment or pipework being connected.
90 Degree Press Elbows
90 degree press elbows change the direction of pipework through a right angle. They are commonly used around equipment, walls, corners and plant rooms.
45 Degree Press Elbows
45 degree press elbows provide a more gradual change in direction where the pipework layout requires it.
Press Tees
Press tees create a branch from a main pipe run. Equal tees connect the same pipe diameter, while reducing tees connect a smaller branch to a larger main pipe.
Press Couplings
Press couplings join two lengths of compatible pipe in a straight run. Slip couplings can also be used where the system design requires movement or positioning during pipework modification.
Press Reducers
Reducers connect different pipe diameters. Concentric and eccentric configurations are available for different pipework layouts.
Press Adaptors
Press adaptors provide a transition between press-fit pipe and another connection type, such as a threaded connection.
Press Flanges
Flanged press fittings provide a connection to equipment, valves or other flanged components where a bolted connection is required.
Press Caps and Plugs
Caps and plugs are used to terminate or close compatible pipework.
Hose Tails and Specialist Fittings
Specialist press fittings such as hose tails and other connection components can be used where the pipework needs to transition to another component or service.
Press Fitting Sizes
Europress press fittings are available across a broad range of pipe diameters. The available size depends on the fitting type and pipe system.
| System | Available Range |
|---|---|
| Standard press-fit systems | Approximately 15 mm to 108 mm |
| Larger Europress systems | Selected sizes through to approximately 158 mm |
| Press Check fittings | Compatible fittings up to and including 54 mm |
Check the individual fitting specification before ordering because not every fitting configuration is available in every diameter.
Carbon Steel Press Fittings
Europress also offers carbon steel press fittings for compatible industrial pipework applications.
Carbon steel press fittings provide another alternative to welded pipe connections where a suitable press-fit system is specified.
Compatible carbon steel fittings use a red Press Check sleeve on applicable sizes, providing a visible indication of the pressing operation.
Stainless Steel BSP Press Fittings and Adaptors
Where a press-fit pipe system needs to connect to threaded equipment or components, stainless steel BSP fittings and adaptors can provide the transition.
Europress offers a range of threaded connection fittings, including male and female adaptors, nipples, sockets and other BSP configurations.
For Unipipe aluminium systems, Air Energy generally recommends brass or high-pressure galvanised steel BSP fittings where appropriate because stainless steel and aluminium threaded components can experience galling.
Always confirm material compatibility for the specific application before selecting threaded components.
Press Fittings for Industrial Applications
Press fittings can be used across a wide range of commercial and industrial pipework applications when the pipe, fitting and sealing materials are approved for the service.
- Compressed air
- Industrial water
- Potable water where the complete system is approved
- Industrial gases
- Food and beverage processing
- Pharmaceutical environments
- HVAC and mechanical services
- Manufacturing facilities
- Plant rooms
- Fire protection applications where the complete system is approved
- Chemical services where material compatibility has been confirmed
- Other industrial process services
The suitability of a press fitting depends on the complete system, including pipe material, fitting material, O-ring, pressure, temperature and medium. Always check the manufacturer's specifications before selecting components.
Press Fittings for Compressed Air
Stainless steel press fittings are commonly used with compressed air pipework where corrosion resistance, cleanliness and reliable connections are important.
Europress stainless steel pipe and press fittings can be used as part of compatible compressed air systems. The fitting, pipe and sealing material should be selected according to the pressure, temperature and air-quality requirements of the system.
Press Fittings for Gas
Gas press fittings are a specialised category and should only be used where the complete pipe and fitting system is approved for the intended gas application.
Europress gas fittings for applicable Australian and New Zealand markets feature yellow Press Check sleeves and HNBR sealing elements. The gas range is manufactured and tested for its specified application and pressure conditions.
What Press Tool Do You Need for Press Fittings?
Press fittings require a compatible press tool and the correct pressing jaw or accessory. The tool should be selected based on the fitting manufacturer, pipe material, pipe diameter and specified pressing profile.
Air Energy supplies professional Klauke and Novopress press tools for compatible press-fit systems.
Common considerations when selecting a press tool include:
- Pipe material
- Pipe diameter
- Fitting manufacturer
- Pressing profile
- Required pressing force
- Tool access and working space
- Battery or power requirements
- Availability of compatible jaws or pressing chains
Press Fittings vs Welded Pipe Fittings
| Consideration | Press Fittings | Welded Connections |
|---|---|---|
| Joining method | Mechanical pressing | Thermal welding |
| Naked flame at joint | No | Depends on welding process |
| Hot-work requirements | Generally avoided at the press joint | May be required |
| Installation equipment | Compatible press tool and jaws | Welding equipment and associated equipment |
| Joint consistency | Controlled pressing cycle when correctly installed | Depends on welding procedure and workmanship |
| Best suited to | Compatible press-fit systems | Applications requiring or specifying welded joints |
Neither joining method is universally suitable for every application. The correct system depends on the service, materials, standards, access, pressure, temperature and project requirements.
Common Press Fitting Installation Mistakes
Using the Wrong Press Jaw
Press profiles are not universally interchangeable. Always use the jaw specified for the fitting system.
Not Deburring the Pipe
Sharp edges can damage the sealing element during assembly. Properly prepare the pipe before inserting it into the fitting.
Not Checking Insertion Depth
The pipe must be fully inserted into the fitting before pressing. Marking the insertion depth provides a simple visual check.
Damaging or Displacing the O-Ring
Take care when inserting the pipe. The sealing element must remain correctly positioned inside the fitting.
Using Incompatible Components
Do not mix pipe, fittings, O-rings and press tools simply because the dimensions appear to match. The complete system must be compatible and approved for the intended application.
Skipping Inspection and Testing
A Press Check indicator can help identify whether compatible fittings have been pressed, but it does not replace the required inspection, pressure testing and commissioning procedures.
Frequently Asked Questions About Press Fittings
What are press fittings?
Press fittings are mechanical pipe fittings that are joined to compatible pipe using a dedicated press tool. The tool applies controlled force to form the connection without welding or soldering the joint.
How do press fittings work?
The pipe is inserted into the fitting and a compatible press tool compresses the fitting around the pipe. The fitting's sealing element provides the required seal while the formed connection provides mechanical retention.
Are press fittings better than welding?
Press fittings and welding suit different applications. Press-fit systems can reduce hot work and simplify installation where the complete press-fit system is approved, while some applications may still require welded connections.
Can you use press fittings on stainless steel pipe?
Yes. Stainless steel press fittings are specifically designed for compatible stainless steel pipe systems. Europress offers 304 and 316L stainless steel press fittings.
What is the difference between 304 and 316L press fittings?
Both are stainless steel grades, but 316L contains molybdenum and generally provides greater corrosion resistance than 304. The appropriate grade depends on the service and environmental conditions.
What is a Press Check fitting?
A Press Check fitting has a visible sleeve designed to indicate whether the fitting has been pressed. On compatible Europress fittings, the sleeve tears and comes away during the pressing operation.
What colour are Europress Press Check sleeves?
Blue is used for stainless steel, red for carbon steel and yellow for gas fittings on the applicable Europress ranges.
What sizes are Europress press fittings available in?
Europress press fittings are available across a broad size range, with standard systems covering approximately 15 mm to 108 mm and selected larger systems extending to approximately 158 mm.
Can press fittings be used for compressed air?
Yes, where the complete pipe and fitting system is approved for compressed air. Europress stainless steel press fittings are available for compatible compressed air applications.
Can press fittings be used for gas?
Specialised gas press fittings can be used where the complete pipework system is approved for the intended gas application. Gas systems must comply with the applicable Australian requirements and manufacturer specifications.
Do press fittings need a press tool?
Yes. Press fittings are installed using the compatible press tool and specified jaw or pressing accessory for the fitting system.
Can you reuse a press fitting?
Press fittings are designed as permanent mechanical connections and should not be treated as reusable components after pressing. Follow the fitting manufacturer's instructions if a pressed joint needs to be removed or modified.
Are press fittings suitable for industrial pipework?
Yes, where the complete system is approved for the intended service. Press-fit systems are used across compatible industrial applications including compressed air, water, gases, HVAC and process services.
What press jaw do I need for Europress?
The required jaw depends on the Europress fitting, pipe diameter and specified pressing profile. Confirm the compatible tool and jaw before starting the installation.
Why Buy Press Fittings from Air Energy?
Air Energy has supplied industrial pipe and fitting systems to Australian customers for more than 30 years.
We supply Europress stainless steel and carbon steel press fittings, compatible pipe, press tools and accessories Australia wide.
- 304 and 316L stainless steel press fittings
- Carbon steel press fittings
- Standard and larger-size fittings
- Press Check fittings
- Pipe and fittings for compatible industrial applications
- Klauke and Novopress press tools
- Technical product advice
- Australia-wide supply
We are a supply-only business, so our role is to help you select the right products and get the pipe, fittings and tools you need for your project.
Not sure which press fitting you need? Send us your pipe size, material, application and connection requirements and we'll help you work through the options.
Call 1300 99 55 26 or email sales@airenergy.com.au.