Midland Industries 46200 Pneumatic Check Valve 1/4 in Brass

Product Description

The MIDLAND INDUSTRIES 46200 is a pneumatic check valve designed to allow one-directional airflow while preventing backflow in compressed air and pneumatic systems. Built with a brass body, NBR seal, and a steel spring mechanism, this valve handles working pressures from 14.5 to 145 psi and a maximum rated pressure of 220 psi. The cracking pressure is 2.8 psi, making it responsive under low differential conditions. The chrome-plated exterior provides added corrosion resistance. At 0.155 pounds and measuring approximately 1.9 inches in length, this is a compact, inline component suited for tight plumbing runs in pneumatic circuits.

This check valve is intended for use in compressed air distribution lines, pneumatic control systems, and similar fluid power applications where reverse flow must be blocked. The 1/4-18 FPT x FPT connections make it compatible with standard threaded pipe assemblies. It is rated for temperatures up to 140 degrees F, fitting typical industrial and light commercial pneumatic environments. The domestic construction and brass body make it a reliable choice for professional installation in shop air systems, automation lines, and pneumatic tool supply runs.

Key Features

• Brass body with chrome-plated finish for corrosion resistance
• NBR seal and steel spring internals for reliable one-way flow control
• 2.8 psi cracking pressure for low-resistance actuation
• Working pressure range of 14.5 to 145 psi with a 220 psi maximum rating
• Maximum temperature rating of 140 degrees F
• Compact inline design at 1.9 inches length for space-constrained installations

Compatibility

Designed as an OEM-style pneumatic check valve for use in standard 1/4 in FPT threaded pneumatic and compressed air piping systems.

Installation Notes

This valve is typically installed by pipefitters, pneumatic system technicians, or licensed plumbers working on compressed air lines. Depressurize the system completely and bleed residual air pressure before removing any existing fittings or valves. Use thread sealant appropriate for pneumatic service and torque connections per the fitting manufacturer guidelines. Verify flow direction marked on the valve body is aligned with the intended airflow direction before pressurizing the system.