Technical Specifications

Why Use an Exhaust Muffler on a Pneumatic Valve?

As a pneumatic cylinder extends or retracts, the air displaced from the opposite chamber returns through the directional control valve and is released to atmosphere. The sudden exhaust can be loud, especially on machines cycling repeatedly.

The mesh element breaks up the concentrated exhaust stream into many smaller passages, reducing the sharp sound near the valve. This can improve the working environment without requiring a separate remote exhaust line.

Why Aluminum and Stainless-Steel Mesh?

The aluminum body keeps the assembly relatively light and provides a practical threaded housing. Stainless-steel mesh provides multiple paths for the exhausting air and a durable silencing medium.

A muffler described as high flow is not automatically unrestricted. Confirm capacity against the valve and cylinder, and remember that accumulated oil, dirt or moisture can progressively increase exhaust backpressure.

Choosing the Correct Connection and Flow Capacity

The ALS-04 is specified with a 1/2 NPT connection. Match the port thread exactly and confirm enough exhaust flow for the required cylinder speed. A muffler that is too restrictive can increase backpressure and extend machine cycle time.

The stated maximum pressure is a catalogue rating, not an exhaust-flow rating. It does not establish the permissible flow or guaranteed noise reduction for a particular machine.

Typical Applications

• Pneumatic directional-control valve exhausts
• Industrial cylinders and air-operated actuators
• High-cycle machine automation requiring local exhaust noise reduction