Gast AC990 Air Actuated Motor Muffler Assembly

Product Description

The GAST AC990 is a replacement muffler assembly designed for air-actuated motors. It reduces exhaust noise at the motor outlet, helping maintain acceptable sound levels in industrial and commercial environments where GAST air motors are in continuous or intermittent service. At 3 inches in overall length and weighing 1 pound, this compact assembly installs directly onto compatible GAST motor exhaust ports. It is typically installed by maintenance technicians and industrial service professionals working on pneumatic motor-driven equipment.

This muffler assembly is intended for use with GAST air-actuated motor models in applications such as pneumatic pumps, agitators, and motor-driven tools found in manufacturing, laboratory, and light industrial settings. The part fits the 6AM, 8AM, 2567, and 3040 model series, making it a direct-fit replacement for worn or damaged exhaust mufflers on those units. Service intervals for muffler replacement are typically driven by increased exhaust noise, restricted airflow, or visible damage to the existing assembly.

Key Features

• Direct-fit muffler assembly for GAST 6AM, 8AM, 2567, and 3040 air motor models
• 3-inch overall length for compact installation on motor exhaust ports
• Lightweight at 1 pound, reducing added load on motor hardware
• Reduces exhaust noise on air-actuated motor outlets
• Single-unit packaging suitable for individual replacement service calls

Compatibility

Designed for use with GAST air-actuated motor models 6AM, 8AM, 2567, and 3040.

Installation Notes

Installation is typically performed by a qualified maintenance technician or industrial service professional. Before replacing the muffler assembly, depressurize the pneumatic system completely and confirm the air supply is isolated and locked out. Use appropriately sized hand tools to remove the existing muffler and thread in the replacement assembly without over-tightening, which can damage exhaust port threads. Verify there are no air leaks at the connection point before returning the motor to service.