The perforated metal muffler includes a manually adjustable tapered metering valve to provide pinpoint control over airflow in pressure (exhaust) applications and vacuum release in vacuum systems

Use external adjusting screws to measure air flow between full closure and full opening

Lock nuts allow you to lock desired Settings to prevent accidental changes

Made of 40 micron sintered porous bronze and galvanized steel, durable and superior noise reduction and airflow control

Recommended for pressures up to 125 psi (8.6 Bar)