This Legris 0611-series silencer is a pneumatic muffler for reducing the sound level of vented air in compressed air systems. It is made of polyethylene (PE) for durability and resistance to cracking. It has male National Pipe Thread (NPT) threads for attaching to a female fitting. This silencer has a maximum operating pressure of 145 pounds per square inch (psi) and an operating temperature range of 14 to 176 degrees F.

Parker Hannifin manufactures electromechanical, hydraulic, and pneumatic motion technologies and systems for liquid handling, filtration, sealing and shielding, climate control, process control, and aerospace applications. The company, founded in 1918, is headquartered in Cleveland, OH.