Mini-Silencer for Oilless Vacuum Pumps: Cover the Exhaust Port 1/4 NPT; Reduce Noise
Why this is needed:
Vacuum Pump has pumping machinical part that pressure the air out and that produce noice, this silencer is designed for reducing the noise level and give the pumps a quieter run.
How it is Connected: This mini-Silencer comes with a 1/4 male NPT connector built at the silencer. so it will go directly to the 1/4 NPT female port. If your pump has a port bigger than 1/4, this silencer might not fit to that pump, You may need some thing bigger than this silencer.
FAQ of this Product Manual/Instruction