Drive Style Drive Style |
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Connection Style Connection Style |
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Threaded |
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Quick Clamp |
System of Measurement System of Measurement |
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Hex Size Hex Size |
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Fitting Finish Fitting Finish |
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Minimum Noise Reduction Rating Minimum NoiseReduction Rating |
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Height Height |
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Removes Particle Size Down To Removes ParticleSize Down To |
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Maximum Flow Rate Maximum Flow Rate |
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Maximum Temperature Maximum Temperature |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Noise, Filtration, and Flow Ratings
More
Mufflers


Use these mufflers with air-powered tools, valves, and cylinders to reduce noise and filter exhaust fumes.
Brass, bronze, and copper mufflers offer good corrosion resistance.


Style | Pipe Size | Thread Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | For Use With | Removes Particle Size Down To, microns | Noise Reduction Rating, dB | Each | |
NPT Male Steel Fitting—Bronze Body | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
A | 1/16 | __ | 26 scfm @ 100 psi | 125 | 300° | 15/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 00000 |
A | 1/8 | __ | 11 scfm @ 100 psi | 300 | 300° | 1 1/8" | Air, Inert Gas | 40 | 15-20 | 000000 | 0000 |
A | 1/4 | __ | 21 scfm @ 100 psi | 300 | 300° | 1 3/8" | Air, Inert Gas | 40 | 15-20 | 000000 | 0000 |
A | 3/8 | __ | 23 scfm @ 100 psi | 300 | 300° | 1 1/2" | Air, Inert Gas | 40 | 15-20 | 000000 | 0000 |
A | 1/2 | __ | 57 scfm @ 100 psi | 300 | 300° | 1 7/8" | Air, Inert Gas | 40 | 15-20 | 000000 | 0000 |
A | 3/4 | __ | 112 scfm @ 100 psi | 300 | 300° | 2 1/4" | Air, Inert Gas | 40 | 15-20 | 000000 | 0000 |
A | 1 | __ | 154 scfm @ 100 psi | 300 | 300° | 2 7/8" | Air, Inert Gas | 40 | 15-20 | 000000 | 00000 |
A | 1 1/4 | __ | 154 scfm @ 100 psi | 300 | 300° | 3 1/4" | Air, Inert Gas | 90 | 15-20 | 000000 | 00000 |
A | 1 1/2 | __ | 162 scfm @ 100 psi | 300 | 300° | 3 11/16" | Air, Inert Gas | 90 | 15-20 | 000000 | 00000 |
A | 2 | __ | 2,190 scfm @ 100 psi | 125 | 300° | 4 3/4" | Air, Inert Gas | 90 | 15-20 | 0000000 | 00000 |
UNF Male Steel Fitting—Bronze Body | |||||||||||
A | __ | 10-32 | 6 scfm @ 100 psi | 300 | 300° | 11/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
BSPT Male Steel Fitting—Bronze Body | |||||||||||
A | 1/8 | __ | 53 scfm @ 100 psi | 125 | 300° | 15/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
A | 1/4 | __ | 70 scfm @ 100 psi | 125 | 300° | 1 5/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
A | 3/8 | __ | 175 scfm @ 100 psi | 125 | 300° | 1 1/2" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
A | 1/2 | __ | 263 scfm @ 100 psi | 125 | 300° | 2" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
A | 3/4 | __ | 438 scfm @ 100 psi | 125 | 300° | 2 5/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 00000 |
A | 1 | __ | 613 scfm @ 100 psi | 125 | 300° | 2 15/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 00000 |
A | 1 1/4 | __ | 700 scfm @ 100 psi | 125 | 300° | 3 1/2" | Air, Inert Gas | 90 | 15-20 | 0000000 | 00000 |
A | 1 1/2 | __ | 1,314 scfm @ 100 psi | 125 | 300° | 4" | Air, Inert Gas | 90 | 15-20 | 0000000 | 00000 |
A | 2 | __ | 2,190 scfm @ 100 psi | 125 | 300° | 4 13/16" | Air, Inert Gas | 90 | 15-20 | 0000000 | 00000 |
NPSM Female Steel Fitting—Bronze Body | |||||||||||
N | 1/8 | __ | 53 scfm @ 100 psi | 125 | 300° | 1 5/16" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
N | 1/4 | __ | 70 scfm @ 100 psi | 125 | 300° | 1 1/2" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
N | 3/8 | __ | 175 scfm @ 100 psi | 125 | 300° | 2" | Air, Inert Gas | 40 | 15-20 | 0000000 | 0000 |
N | 1/2 | __ | 263 scfm @ 100 psi | 125 | 300° | 2 1/4" | Air, Inert Gas | 40 | 15-20 | 0000000 | 00000 |
Compact High-Flow Mufflers


A small hex size makes these high-flow mufflers a good fit for cramped spaces. Commonly used with high-flow, air-powered equipment, such as diaphragm pumps and valves, they reduce noise and filter exhaust fumes without restricting flow.
Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | For Use With | Removes Particle Size Down To, microns | Noise Reduction Rating, dB | Each | |
NPT Male Zinc-Plated Steel Fitting | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/8 | 48 scfm @ 100 psi | 150 | 400° | 1 3/8" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1/4 | 105 scfm @ 100 psi | 150 | 400° | 1 3/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 0000 |
3/8 | 219 scfm @ 100 psi | 150 | 400° | 2 3/16" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1/2 | 332 scfm @ 100 psi | 150 | 400° | 2 3/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
3/4 | 613 scfm @ 100 psi | 150 | 400° | 3 3/16" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1 | 876 scfm @ 100 psi | 150 | 400° | 3 7/8" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1 1/4 | 1,226 scfm @ 100 psi | 150 | 400° | 4 1/2" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1 1/2 | 1,576 scfm @ 100 psi | 150 | 400° | 5" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
2 | 2,452 scfm @ 100 psi | 150 | 400° | 5 1/2" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
BSPT Male Zinc-Plated Steel Fitting | |||||||||
1/8 | 48 scfm @ 100 psi | 150 | 400° | 1 3/8" | Air, Inert Gas | 100 | 15-22 | 0000000 | 0000 |
1/4 | 105 scfm @ 100 psi | 150 | 400° | 1 3/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 0000 |
3/8 | 219 scfm @ 100 psi | 150 | 400° | 2 3/16" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1/2 | 332 scfm @ 100 psi | 150 | 400° | 2 3/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
3/4 | 613 scfm @ 100 psi | 150 | 400° | 3 3/16" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1 | 876 scfm @ 100 psi | 150 | 400° | 3 7/8" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1 1/4 | 1,226 scfm @ 100 psi | 150 | 400° | 4 1/2" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1 1/2 | 1,576 scfm @ 100 psi | 150 | 400° | 5" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
2 | 2,452 scfm @ 100 psi | 150 | 400° | 5 1/2" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
NPSM Female Zinc-Plated Steel Fitting | |||||||||
1/8 | 48 scfm @ 100 psi | 150 | 400° | 1 3/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 0000 |
1/4 | 105 scfm @ 100 psi | 150 | 400° | 2 1/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
3/8 | 219 scfm @ 100 psi | 150 | 400° | 2 3/4" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
1/2 | 332 scfm @ 100 psi | 150 | 400° | 3 1/8" | Air, Inert Gas | 100 | 15-22 | 0000000 | 00000 |
Clog-Resistant Mufflers

Replace your muffler less often—these have a filter design that stays clean longer than porous mufflers. They’re often used in air-powered circuits to reduce noise and filter exhaust fumes.
Style A has a screw on top to adjust air flow.
Inline Mufflers


With a threaded connection on both ends, these mufflers can be installed anywhere in your line. Use with large blowers, diaphragm pumps, vacuum pumps, and compressors to reduce noise and filter exhaust fumes.
Mufflers with steel body and fittings are heavy duty for durability in rugged environments.
Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Dia. | Lg. | For Use With | Body Material | Insulation Material | Noise Reduction Rating, dB | Each | |
NPT Male Steel Fittings | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1/2 | 25 scfm @ 14.5 psi | Not Rated | 212° | 2 1/2" | 13 7/8" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 0000000 |
3/4 | 35 scfm @ 14.5 psi | Not Rated | 212° | 2 1/2" | 14 1/2" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
1 | 42 scfm @ 14.5 psi | Not Rated | 212° | 2 1/2" | 14 1/2" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
1 1/4 | 55 scfm @ 14.5 psi | Not Rated | 212° | 2 1/2" | 14 1/2" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
1 1/2 | 155 scfm @ 14.5 psi | Not Rated | 212° | 2 5/8" | 14 1/2" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
2 | 270 scfm @ 14.5 psi | Not Rated | 212° | 3 5/8" | 18 1/2" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
2 1/2 | 385 scfm @ 14.5 psi | Not Rated | 212° | 4 5/8" | 23 11/16" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
3 | 575 scfm @ 14.5 psi | Not Rated | 212° | 5 1/8" | 28" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
4 | 575 scfm @ 14.5 psi | Not Rated | 212° | 10" | 29 5/16" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
NPT Female Steel Fittings | |||||||||||
1 | 42 scfm @ 14.5 psi | Not Rated | 212° | 2 1/2" | 12" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
1 1/4 | 55 scfm @ 14.5 psi | Not Rated | 212° | 2 1/2" | 12" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
1 1/2 | 155 scfm @ 14.5 psi | Not Rated | 212° | 2 5/8" | 12" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
2 | 270 scfm @ 14.5 psi | Not Rated | 212° | 3 5/8" | 15 3/4" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
2 1/2 | 385 scfm @ 14.5 psi | Not Rated | 212° | 4 5/8" | 20 7/8" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
3 | 575 scfm @ 14.5 psi | Not Rated | 212° | 5 1/8" | 25 7/8" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
4 | 575 scfm @ 14.5 psi | Not Rated | 212° | 10" | 24 11/16" | Air, Inert Gas | Steel | Polyester Plastic | 30 | 0000000 | 000000 |
End-Exhaust Mufflers

These mufflers exhaust through narrow holes on one end to provide a concentrated blast of air. Use them to eject items from your conveyor and direct exhaust away from delicate applications. They have an external hex drive so they can be tightened with a wrench.
Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | For Use With | Noise Reduction Rating, dB | Each | |
NPT Male Steel Fitting | ||||||||
---|---|---|---|---|---|---|---|---|
1/8 | 24 scfm @ 100 psi | 175 | 300° | 1 3/8" | Air, Inert Gas | 21 | 0000000 | 00000 |
1/4 | 37 scfm @ 100 psi | 175 | 300° | 1 3/4" | Air, Inert Gas | 21 | 0000000 | 0000 |
3/8 | 49 scfm @ 100 psi | 175 | 300° | 2 3/16" | Air, Inert Gas | 21 | 0000000 | 00000 |
1/2 | 74 scfm @ 100 psi | 175 | 300° | 2 3/4" | Air, Inert Gas | 21 | 0000000 | 00000 |
3/4 | 82 scfm @ 100 psi | 175 | 300° | 3 3/16" | Air, Inert Gas | 21 | 0000000 | 00000 |
1 | 110 scfm @ 100 psi | 175 | 300° | 3 7/8" | Air, Inert Gas | 21 | 0000000 | 00000 |
Oil-Mist-Recycling Mufflers



Also known as reclassifiers, these mufflers have a clear reservoir with a drain plug to remove and store oil mist for reuse. Mufflers must be mounted vertically.
Mufflers | Replacement Filters | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Reservoir Material | Removes Particle Size Down To, microns | Noise Reduction Rating, dB | Each | Each | ||
NPT Female Aluminum Fitting | |||||||||||||
1/4 | 7 scfm @ 15 psi | 15 | 140° | 3 1/2" | 2 3/16" | Air | Plastic | 0.3 | 35 | 0000000 | 000000 | 0000000 | 000000 |
3/8 | 11 scfm @ 15 psi | 15 | 140° | 4 3/4" | 2 15/16" | Air | Plastic | 0.3 | 35 | 0000000 | 00000 | 0000000 | 00000 |
1/2 | 35 scfm @ 15 psi | 15 | 140° | 6 13/16" | 4 1/16" | Air | Plastic | 0.3 | 35 | 0000000 | 00000 | 0000000 | 00000 |
3/4 | 35 scfm @ 15 psi | 15 | 140° | 6 13/16" | 4 1/16" | Air | Plastic | 0.3 | 35 | 0000000 | 00000 | 0000000 | 00000 |
NPT Male Aluminum Fitting | |||||||||||||
1 | 106 scfm @ 15 psi | 15 | 140° | 8 7/8" | 4 5/8" | Air | Plastic | 0.3 | 35 | 0000000 | 00000 | 0000000 | 00000 |
1 1/2 | 212 scfm @ 15 psi | 15 | 140° | 10 5/8" | 5 5/16" | Air | Plastic | 0.3 | 35 | 0000000 | 000000 | 0000000 | 000000 |
2 | 353 scfm @ 15 psi | 15 | 140° | 12 7/8" | 6 1/16" | Air | Plastic | 0.3 | 35 | 0000000 | 000000 | 0000000 | 000000 |
High-Noise-Reducing Mufflers
Install these mufflers in air-powered drills and other loud equipment. They filter exhaust fumes and reduce noise by 30-35 dB, a reduction that's equivalent to putting in earplugs.
Mufflers with pipe connections thread into NPT or metric threaded exhaust ports.

Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Body Material | Noise Reduction Rating, dB | Each | |
NPT Male Aluminum Fitting | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
3/4 | 423 scfm @ 72 psi | 145 | 140° | 4 1/4" | 1 13/16" | Air | Steel | 30-35 | 0000000 | 000000 |
1 | 706 scfm @ 72 psi | 145 | 140° | 5 3/16" | 1 15/16" | Air | Steel | 30-35 | 0000000 | 00000 |
1 1/4 | 1,059 scfm @ 72 psi | 145 | 140° | 7 7/8" | 2 15/16" | Air | Steel | 30-35 | 0000000 | 00000 |
1 1/2 | 1,765 scfm @ 72 psi | 145 | 140° | 9 3/16" | 2 15/16" | Air | Steel | 30-35 | 0000000 | 00000 |
2 | 2,825 scfm @ 72 psi | 145 | 140° | 10 3/8" | 3 3/8" | Air | Steel | 30-35 | 0000000 | 00000 |
Inline High-Noise-Reducing Mufflers

With a threaded connection on both ends, these mufflers can be installed anywhere in your line. They are designed to minimize noise from rotary and centrifugal blowers, vacuum pumps, low-pressure vents, and other loud equipment with minimal pressure drop.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Dia. | Lg. | For Use With | Body Material | Insulation Material | Noise Reduction Rating, dB | Each | |
NPT Female Steel Fittings | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1/2 | 12 scfm @ 14.7 psi | 15 | 325° | 3 1/4" | 8" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 0000000 |
3/4 | 25 scfm @ 14.7 psi | 15 | 325° | 3 1/4" | 11" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
1 | 45 scfm @ 14.7 psi | 15 | 325° | 3 1/4" | 14" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
1 1/4 | 70 scfm @ 14.7 psi | 15 | 325° | 3 1/4" | 16" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
1 1/2 | 100 scfm @ 14.7 psi | 15 | 325° | 5" | 19 3/4" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
2 | 180 scfm @ 14.7 psi | 15 | 325° | 5" | 26" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
2 1/2 | 275 scfm @ 14.7 psi | 15 | 325° | 6 1/8" | 33 1/2" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
3 | 400 scfm @ 14.7 psi | 15 | 325° | 6 5/8" | 36 1/2" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
4 | 700 scfm @ 14.7 psi | 15 | 325° | 8" | 48 7/8" | Air, Inert Gas | Steel | Polywool | 45 | 0000000 | 000000 |
Exhaust Filters/Mufflers for Dry High-Vacuum Pumps
Purify exhaust fumes while silencing the noise from your oil-free high-vacuum pumps. With quick-clamp (KF) connections, these filters/mufflers connect to exhaust ports with a clamp and ring (sold separately). Mount them vertically or horizontally. All are carbon steel with a powder-coated finish for corrosion resistance.

O'all | Element | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trade Number | Flange OD | For Tube OD | Max. Flow Rate | High Vacuum Connection Type | Max. Vacuum | Temp. Range, °F | Ht. | Dia. | Removes Particle Size Down To, microns | Noise Reduction Rating, dB | Filter Efficiency | Ht. | OD | Material | Each | |
Powder-Coated Steel Housing with Zinc-Plated Steel Fittings | ||||||||||||||||
16 | 1.18" | 3/4" | 9 scfm @ 14.7 psi | ISO-KF | Not Rated | -15° to 220° | 3 3/4" | 3 1/4" | 25 | 10-15 | 99% | 1 3/8" | 3" | Polyester Plastic | 0000000 | 0000000 |
25 | 1.57" | 1" | 11 scfm @ 14.7 psi | ISO-KF | Not Rated | -15° to 220° | 3 3/4" | 3 1/4" | 25 | 10-15 | 99% | 1 3/8" | 3" | Polyester Plastic | 0000000 | 000000 |
25 | 1.57" | 1" | 24 scfm @ 14.7 psi | ISO-KF | Not Rated | -15° to 220° | 4 1/2" | 4 1/8" | 25 | 10-15 | 99% | 1 3/8" | 4" | Polyester Plastic | 0000000 | 000000 |
Trade Number | For Flange OD | For Tube OD | Material | Max. Vacuum | High Vacuum Connection Type | Each | |
10 | 1.18" | 1/2" | Aluminum | 1 × 10^-7 torr @ 72° F | ISO-KF | 00000000 | 00000 |
10, 16 | 1.18" | 1/2", 3/4" | Aluminum | 1 × 10^-7 torr @ 72° F | ISO-KF | 00000000 | 0000 |
16 | 1.18" | 3/4" | Aluminum | 1 × 10^-7 torr @ 72° F | ISO-KF | 00000000 | 0000 |
25 | 1.57" | 1" | Aluminum | 1 × 10^-7 torr @ 72° F | ISO-KF | 0000000 | 00000 |