Norgren MB004A Pneumatic Muffler 1/2 Inch Nptf 300 Psi

Product Description

The NORGREN MB004A is an aluminum pneumatic muffler designed to reduce exhaust noise on compressed air systems. It threads directly into valve exhaust ports, silencing airflow discharge while maintaining system pressure integrity. The MB004A uses a 1/2 inch NPTF threaded connection and is rated for a maximum working pressure of 300 psi. At 3.62 inches overall length and 1.25 inches overall diameter, it is compact enough for use in tight panel or manifold installations. Weighing just 0.13 pounds, it adds minimal mass to the assembly. Licensed pneumatic system technicians and industrial maintenance mechanics are the typical installers.

The MB004A is suited for use on pneumatic directional control valves, solenoid valves, cylinders, and air-operated equipment where exhaust noise reduction is required. It is appropriate for both light industrial and heavy-duty compressed air applications operating within the rated 300 psi limit. The sintered aluminum construction allows exhaust air to diffuse through the muffler body, cutting sound levels at the point of discharge without restricting system response. It is commonly installed in manufacturing, automation, and process control environments.

Key Features

• 1/2 inch NPTF threaded connection for direct valve exhaust port installation
• 300 psi maximum working pressure rating
• Aluminum construction for corrosion resistance and light weight
• Compact 3.62 inch overall length fits confined mounting locations
• 1.25 inch overall diameter sintered body diffuses exhaust airflow to reduce noise
• Weighs 0.13 pounds for minimal impact on valve or manifold assemblies

Compatibility

Designed as an OEM-style replacement or aftermarket muffler for pneumatic valves and actuators with 1/2 inch NPTF exhaust ports operating at up to 300 psi.

Installation Notes

Installation is performed by qualified pneumatic system technicians or industrial maintenance mechanics. Depressurize and isolate the pneumatic circuit completely before removing or installing any muffler. Apply thread sealant appropriate for compressed air service and tighten to snug by hand before using a wrench — avoid overtightening, which can crack the sintered body. Verify the exhaust port thread type is NPTF before installation to ensure a proper seal.