Midland Industries 540402SC Dot 45-deg Male Elbow

Product Description

The MIDLAND INDUSTRIES 540402SC is a D.O.T.-rated composite 45-degree male elbow fitting designed for push-to-connect pneumatic and air brake tubing systems. It connects 1/4-inch push-to-connect tubing on one end to a 1/8-inch male NPT port on the other, allowing a direction change in tight plumbing runs. The composite body keeps weight low while meeting D.O.T. performance requirements. Rated to 145 psi and an operating range of -40 to 140 degrees F, this fitting suits demanding mobile and stationary air system applications. The positional swivel feature allows the NPT end to be oriented before final tightening, simplifying installation in confined spaces.

This fitting is used in air brake lines, pneumatic control systems, and compressed air plumbing on commercial vehicles, trailers, and industrial equipment. The 1/8-27 NPT thread pitch is standard across a wide range of solenoid valves, manifolds, and control ports. Plumbers and fleet mechanics working on D.O.T.-compliant air systems will find this fitting useful wherever a 45-degree change of direction is needed between a push-to-connect line and an NPT-threaded component.

Key Features

• D.O.T.-rated composite body for air brake and pneumatic system use
• 45-degree elbow geometry for direction changes in confined installations
• 1/4-inch push-to-connect inlet for tool-free tubing insertion and release
• 1/8-27 male NPT outlet for standard threaded port connections
• Positional swivel on NPT end allows orientation adjustment before final tightening
• Rated to 145 psi across a -40 to 140 degrees F operating range

Compatibility

Designed as a D.O.T.-compliant OEM-style fitting for pneumatic and air brake systems using 1/4-inch push-to-connect tubing and 1/8-inch NPT threaded ports on commercial vehicles, trailers, and industrial equipment.

Installation Notes

Installation is performed by fleet mechanics or pneumatic system technicians. Depressurize the air system completely before removing or installing any fittings. Apply thread sealant or PTFE tape to the male NPT threads in accordance with the fitting manufacturer guidance and applicable codes. Tug the tubing after insertion to confirm the push-to-connect collet has seated and locked before returning the system to service.