Stainless Steel Push-in Fittings SMJ & SMF Series

Flexible Connection Solutions for Pneumatic Systems

The SMJ and SMF Series Stainless Steel Push-in Fittings are designed for pneumatic systems where dependable connections, compact installation, and flexible thread configurations are important. Although both series provide straight connection solutions, their structures address different installation requirements.

The SMJ Series Male Plug-in Fitting With O-ring combines a male threaded section with a push-in connection and an O-ring sealing structure. This configuration provides an additional sealing interface at the threaded connection and is suitable for applications where connection stability and leak prevention are important.

The SMF Series Male-Female Universal Straight fitting provides a straight transition between male and female threaded connections. Its universal configuration can simplify pneumatic circuit assembly when two components with different thread interfaces need to be connected without introducing unnecessary adapters.

Together, these stainless steel push-in fittings offer practical options for building compact and organized pneumatic circuits.

Stainless Steel Materials and Precision Production

The SMJ and SMF Series are available in 303, 304, 316, and 316L stainless steel. These materials provide good resistance to corrosion, moisture, and mechanical wear, making the fittings suitable for general industrial automation as well as more demanding pneumatic environments.

Most components are manufactured using automated equipment, while specialized inspectors check critical production processes to maintain dimensional accuracy and required tolerances.

● Key characteristics include:

• 303, 304, 316, and 316L stainless steel options.

• SMJ Male Plug-in Fitting With O-ring configuration.

• SMF Male-Female Universal Straight configuration.

• BSP, PT, NPT, and metric thread options.

• OEM and ODM customization supported.

• CAD drawings available according to customer requirements.

• Ultrasonic inspection and cleaning, followed by drying before shipment.

• ISO9001, CE, and FDA certifications.

Push-in Assembly and Threaded Installation

The push-in connection allows pneumatic tubing to be installed quickly by inserting a properly cut tube into the fitting. The connection can be checked by gently pulling the tubing after insertion to confirm that it is securely retained.

For the SMJ Series, the male thread is installed into a compatible female port, while the integrated O-ring provides an additional sealing interface. The SMF Series can be used to join male and female threaded components directly, making it useful when a straight connection between different interfaces is required.

Before installation, users should verify tube dimensions, thread specifications, and sealing requirements. Threads should be tightened appropriately without excessive force that could damage the fitting or mating component.

Applications in Automation and Pneumatic Equipment

SMJ and SMF Series stainless steel push-in fittings are suitable for industrial automation, pneumatic control systems, packaging machinery, assembly equipment, robotics, instrumentation, and compressed-air piping.

The SMJ configuration works well for connecting tubing directly to valves, cylinders, manifolds, and other threaded pneumatic components. The SMF universal straight design is particularly useful for connecting components with different male and female thread interfaces while maintaining a straight and compact piping arrangement.

For equipment exposed to moisture, corrosive surroundings, or frequent pneumatic operation, stainless steel construction offers an additional level of durability. The combination of multiple material grades, thread standards, and customization support makes the SMJ and SMF Series adaptable to different pneumatic system designs.