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A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.
The end of the final length of the exhaust pipe where it vents to open air, generally the only visible part of the exhaust system part on a vehicle, often ends with a straight or angled cut but may include a decorative tip. The tip is sometimes chromed. It frequently has a larger pipe than the rest of the exhaust system.
Silencer (silver) and exhaust pipe on a Ducati motorcycle A silencer cut open to show the insulation, chambers and piping inside the shell. A muffler (North American and Australian English) [1] or silencer (British English) is a device for reducing the noise emitted by the exhaust of an internal combustion engine—especially a noise-deadening device forming part of the exhaust system of an ...
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
The High Standard HDM is a conventional blowback-operated semi-automatic pistol fitted with an integral silencer which decreases its report by more than 20 dB. [4] This pistol design was originally delivered on 20 January 1944, and original contract models were blued with a parkerized (phosphate) finish on the silencer. Follow-on models were ...
Jonathan Jackson is taking a brief hiatus from General Hospital.. On Monday, Feb. 17, PEOPLE confirmed that the actor — who plays Lucky Spencer — will be missing from a few episodes of the ...
Bursting discs, restriction orifices, strainers and filters, steam traps, moisture traps, sight-glasses, silencers, flares and vents, flame arrestors, vortex breakers, eductors; Process piping, sizes and identification, including: Pipe classes and piping line numbers; Flow directions; Interconnections references; Permanent start-up, flush and ...
France: silencers for rimfire pistols are sold without government oversight in France. [39] Germany: a silencer is treated the same in the eyes of the law as the weapon it is designed for. Accordingly, suppressors for air guns, which can be purchased by anyone over 18 years of age, can be purchased by anyone over 18. A hunting license allows ...