What is a CARTfit Push-In Cartridge?
The CARTfit Series 7700 packages the main components of a push-in fitting, including a stainless steel gripping ring, brass sleeve, seal and tube-release button, into one compact cartridge.
The cartridge is pressed into a correctly dimensioned cavity in a compatible engineering-polymer, brass or aluminium housing. Tubing is then pushed directly into the cartridge, where the gripping ring retains it and the seal supports the fluid connection.
This allows OEMs to integrate a connection directly into:
- Pneumatic manifolds and valve blocks
- Machine components and moulded housings
- Fluid distribution and control system housings
- Transport, beverage, cooling and medical gas equipment
How Does CARTfit Work?
Installation is deliberately straightforward.
A cavity is machined or moulded to the specified dimensions for the cartridge size and housing material.
CARTfit can then be installed manually or automatically using a correctly dimensioned mounting tool and the specified insertion method. Once fitted, the tube connects in the same familiar way as a conventional push-in fitting.
The technical drawings show dedicated cavity dimensions for both metal and polymer housings, demonstrating how the cartridge can be incorporated directly into the design of the component.
Important: Cavity dimensions, tolerances, cleanliness and alignment are critical. Review the CARTfit technical information or speak to Camozzi UK before finalising the housing design.
Why Use a Cartridge Instead of a Conventional Fitting?
For OEMs and equipment manufacturers, integrating the connection directly into the product can offer several advantages.
- Less space required: the connection is integrated into the housing, avoiding a separate fitting body protruding from the equipment.
- Fewer assembly operations: the cartridge can be installed during production without fitting and tightening a separate threaded connector.
- Simple tube connection: once the cartridge is installed, tubing is connected by pushing it into place with low insertion force.
- Suitable for automated assembly: CARTfit can be supplied in sticks of 50 cartridges to support automated installation processes.
Where Can the CARTfit Series 7700 Be Used?
The range includes 4 versions for different media and operating environments. Maximum operating pressure is up to 20 bar, depending on housing material and operating temperature. Permitted conditions also depend on the tubing used.
Industrial Automation and Pneumatics (G7700)
The standard G7700 version is designed for compressed air, neutral gases and vacuum applications. Typical uses could include pneumatic manifolds, compact machine components and automated equipment where manufacturers want to integrate the pneumatic tube connection directly into the component body.
Available for 4, 6 and 8 mm tubing and operating pressures of up to 20 bar, depending on housing material and temperature; has an operating temperature of −20°C to +80°C.
Transportation (G7700-LT)
The G7700-LT version is intended for transportation applications using compressed air, neutral gases and vacuum in low temperature transport applications. Available for 4, 6 and 8 mm tubing, with an operating temperature of −40°C to +80°C.
Typical applications could include integrated pneumatic connections within vehicle cabin and body systems.
Beverage and Cooling (WB7700)
The WB7700 version is designed for applications involving mains and drinking water, beverages, gases, industrial water and cooling fluids. Available for 4, 6 and 8 mm tubing, with an EPDM seal and an operating temperature of −20°C to +100°C.
This makes it suitable for equipment such as beverage dispensing systems, water filtration equipment and cooling circuits.
Medical (W7700)
The W7700 version is designed for oxygen and medical gases and is available for 4 and 6 mm tubing, with an EPDM seal and an operating temperature of −20°C to +100°C.
Potential applications include medical gas equipment and anaesthesia devices where a compact, integrated tube connection is required.
Always confirm the selected model, tubing and operating conditions against the current technical documentation.
Technical Support From Camozzi Automation UK
If you are designing a pneumatic, fluid or gas connection into new equipment, Camozzi Automation UK can help you identify the appropriate CARTfit version, cavity and installation approach for your application.