3⁄8 Pipe Size Mufflers

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49 Products

About Noise, Filtration, and Flow Ratings

Use these mufflers with air-powered tools, valves, and cylinders to reduce noise and filter exhaust fumes.

Styles C, K, and M have a slotted drive for installation with a screwdriver.

Brass, bronze, and copper mufflers offer good corrosion resistance.

Nylon mufflers resist corrosion and will not deteriorate when exposed to oil.

Acetal mufflers won't absorb water or lose strength, even in high-humidity environments.

Polypropylene and polyethylene mufflers offer good corrosion and abrasion resistance. Polyethylene also works well in oily conditions.

For technical drawings and 3-D models, click on a part number.

Mufflers with Pipe Connection

NPT Male Nickel-Plated Steel Fitting—Bronze Body
Style	Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating		Each
A	3/8	23 scfm @ 100 psi	300	300°	1 1/2"	__	Air, Inert Gas	40	15-20 dB	000000	00000
NPT Male Bronze Fitting—Bronze Body
C	3/8	82 scfm @ 100 psi	170	500°	1 9/16"	11/16"	Air, Inert Gas	100	10-20 dBA	0000000	0000
BSPT Male Zinc-Plated Steel Fitting—Bronze Body
A	3/8	175 scfm @ 100 psi	125	300°	1 1/2"	__	Air, Inert Gas	40	17-22 dBA	0000000	0000
BSPP Male Brass Fitting—Brass Body
A	3/8	139 scfm @ 100 psi	175	175°	2 1/8"	__	Air, Inert Gas	40	10-20 dB	0000000	00000
A	3/8	162 scfm @ 100 psi	145	175°	1 3/8"	3/4"	Air, Inert Gas	50	10-20 dB	0000000	0000
A	3/8	164 scfm @ 100 psi	145	175°	1 5/8"	__	Air, Inert Gas	50	10-20 dB	0000000	0000
C	3/8	141 scfm @ 100 psi	145	300°	1 7/16"	5/8"	Air, Inert Gas	50	10-20 dB	0000000	0000
F	3/8	38 scfm @ 100 psi	175	175°	11/16"	__	Air, Inert Gas	100	10-20 dB	0000000	0000
F	3/8	56 scfm @ 100 psi	175	175°	13/16"	__	Air, Inert Gas	100	10-20 dB	0000000	0000
H	3/8	121 scfm @ 100 psi	145	300°	1 7/16"	__	Air, Inert Gas	50	10-20 dB	0000000	0000
J	3/8	53 scfm @ 100 psi	175	175°	1 1/2"	__	Air, Inert Gas	100	10-20 dB	0000000	00000
K	3/8	164 scfm @ 100 psi	145	175°	13/16"	5/8"	Air, Inert Gas	50	10-20 dB	0000000	0000
K	3/8	56 scfm @ 100 psi	145	175°	1/4"	5/8"	Air, Inert Gas	120	10-20 dB	0000000	0000
BSPP Male Nylon Plastic Fitting—Nylon Plastic Body
L	3/8	42 scfm @ 100 psi	85	155°	2 1/4"	15/16"	Air, Inert Gas	Not Rated	10-20 dB	0000000	0000
BSPP Male Nylon Plastic Fitting—Polyethylene Plastic Body
G	3/8	170 scfm @ 100 psi	145	176°	2 9/16"	1"	Air, Inert Gas	50	10-25 dB	0000000	0000
BSPP Male Acetal Plastic Fitting—Acetal Plastic Body
M	3/8	42 scfm @ 100 psi	85	120°	2 5/16"	1"	Air, Inert Gas	Not Rated	10-20 dB	0000000	0000
NPSM Female Steel Fitting—Bronze Body
N	3/8	175 scfm @ 100 psi	125	300°	2"	__	Air, Inert Gas	40	17-22 dBA	0000000	0000

Compact High-Flow Mufflers

With Male Fitting

With Female Fitting

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.

For technical drawings and 3-D models, click on a part number.

NPT Male Zinc-Plated Steel Fitting
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA		Each
3/8	219 scfm @ 100 psi	150	400°	2 3/16"	Air, Inert Gas	100	17-22	0000000	000000
NPT Male 304 Stainless Steel Fitting
3/8	219 scfm @ 100 psi	150	400°	2 3/16"	Air, Inert Gas	100	17-22	0000000	00000
BSPT Male Zinc-Plated Steel Fitting
3/8	219 scfm @ 100 psi	150	400°	2 3/16"	Air, Inert Gas	100	15-22	0000000	00000
NPSM Female Zinc-Plated Steel Fitting
3/8	219 scfm @ 100 psi	150	400°	2 3/4"	Air, Inert Gas	100	17-22	0000000	00000

High-Flow Mufflers

With Male Fitting

With Female Fitting

Replacement Filter

Commonly used with high-flow, air-powered equipment, such as diaphragm pumps and valves, these mufflers reduce noise and filter exhaust fumes without restricting flow.

For technical drawings and 3-D models, click on a part number.

Mufflers											Replacement Filters
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA		Each		Each
NPT Male Aluminum Fitting
3/8	210 scfm @ 100 psi	125	210°	5 1/8"	2 5/8"	Air, Inert Gas	5	17-25	00000000	000000	0000000	000000
NPSM Female Aluminum Fitting
3/8	210 scfm @ 100 psi	125	210°	4 9/16"	2 5/8"	Air, Inert Gas	5	17-25	00000000	00000	0000000	00000

Corrosion-Resistant Mufflers

Made entirely of stainless steel, these mufflers stand up to harsh, corrosive environments. Use them to reduce noise from equipment and to filter exhaust fumes.

304 stainless steel offers very good corrosion resistance.

316 stainless steel offers excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

NPT Male 304 Stainless Steel Fitting
	Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating		Each
A	3/8	175 scfm @ 100 psi	125	300°	1 1/2"	Air, Inert Gas	50	17-22 dBA	0000000	000000
BSPT Male 316 Stainless Steel Fitting
A	3/8	65 scfm @ 100 psi	150	1000°	2 1/16"	Air, Inert Gas	100	18-20 dB	0000000	00000

Flow-Control Mufflers

Adjust the flow by turning the screw. Use these mufflers with air-powered tools and cylinders to reduce noise and filter exhaust fumes.

For mufflers with an external hex drive, twist the screw and then tighten the hex nut with a wrench to secure. These mufflers are more secure than those with a thumb screw.

Brass, bronze, and nylon mufflers offer good corrosion resistance.

Stainless steel mufflers offer excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Mufflers with External Hex Drive

NPT Brass

NPT 316 Stainless Steel

BSPP Nylon Plastic

NPT Male Brass Fitting
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	Features		Each
3/8	40 scfm @ 100 psi	300	300°	1 5/8"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000
3/8	60 scfm @ 100 psi	300	300°	2"	Air, Inert Gas	40	17-20	Adjustable Airflow	0000000	00000
NPT Male 316 Stainless Steel Fitting
3/8	30 scfm @ 100 psi	300	390°	1 5/8"	Air, Inert Gas	70	Not Rated	Adjustable Airflow	0000000	00000
BSPP Male Nylon Plastic Fitting
3/8	170 scfm @ 100 psi	145	210°	1 1/2"	Air, Inert Gas	75	10-20	Adjustable Airflow	0000000	00000

Clog-Resistant Mufflers

(B) With
Male
Fitting

(B) With
Female
Fitting

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.

For technical drawings and 3-D models, click on a part number.

NPT Male Aluminum Fitting
Style	Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating		Each
B	3/8	81 scfm @ 100 psi	300	160°	3 1/4"	Air	250	17-20 dB	0000000	000000
NPT Male Nylon Plastic Fitting
C	3/8	65 scfm @ 100 psi	150	120°	3 7/16"	Air	250	17-20 dB	0000000	0000
NPT Female Aluminum Fitting
B	3/8	81 scfm @ 100 psi	300	160°	3 1/4"	Air	250	17-20 dB	0000000	00000

Easy-to-Clean Mufflers

These mufflers can be cleaned for an extended service life. Use them with air-powered tools, valves, and cylinders to reduce noise and filter exhaust fumes.

Glass-filled polypropylene plastic mufflers can be disassembled for cleaning.

For technical drawings and 3-D models, click on a part number.

NPT Male Polyethylene Plastic Fitting

	Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA	Filter Material		Each
A	3/8	128 scfm @ 100 psi	150	150°	2 5/8"	15/16"	Air, Inert Gas	80	20-30	Polyethylene Plastic	0000000	00000
A	3/8	51 scfm @ 100 psi	150	150°	2 5/8"	15/16"	Air, Inert Gas	80	20-30	Polyethylene Plastic	0000000	0000

NPT Male Glass-Filled Polypropylene Plastic Fitting

	Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA	Choose a Filter Material		Each
B	3/8	98 scfm @ 100 psi	150	175°	3 1/2"	1 3/8"	Air Inert Gas	75	20-30	Polyethylene Plastic, Brass, 304 Stainless Steel	0000000	000000
C	3/8	95 scfm @ 100 psi	150	175°	2 13/16"	2"	Air Inert Gas	75	20-30	Polyethylene Plastic, Brass, 304 Stainless Steel	0000000	00000

Oil-Mist-Eliminating Mufflers

With Male Fitting

In addition to a filter, these mufflers have a wool felt disc to trap oil mist. They are often used with vacuum pumps and suction devices to reduce noise and filter exhaust fumes.

For technical drawings and 3-D models, click on a part number.

NPT Male Aluminum Fitting
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA		Each
3/8	210 scfm @ 100 psi	125	210°	5 1/8"	2 5/8"	Air, Inert Gas	5	17-25	0000000	000000

Inline Mufflers

With Aluminum Male Fitting

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.

NPT Male Aluminum Fittings
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Dia.	Lg.	For Use With	Body Material	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA		Each
3/8	210 scfm @ 100 psi	125	210°	2 5/8"	6"	Air, Inert Gas	409 Stainless Steel and Aluminum	5	17-22 dBA	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.

For technical drawings and 3-D models, click on a part number.

NPT Male Steel Fitting
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	For Use With	Noise Reduction Rating, dBA		Each
3/8	49 scfm @ 100 psi	175	300°	2 3/16"	Air, Inert Gas	17-22	0000000	000000

Oil-Mist-Recycling Mufflers

With Female Fitting

Replacement Filter

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.

For technical drawings and 3-D models, click on a part number.

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
3/8	11 scfm @ 15 psi	15	140°	4 3/4"	2 15/16"	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 dB, a reduction that's equivalent to putting in earplugs.

Mufflers with pipe connections thread into NPT or metric threaded exhaust ports.

For technical drawings and 3-D models, click on a part number.

Mufflers with Pipe Connection

Plastic Body

NPT Male Polypropylene Plastic Fitting
Pipe Size	Max. Flow Rate	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Body Material	Noise Reduction Rating, dB		Each
3/8	176 scfm @ 72 psi	145	140°	2 5/16"	13/16"	Air	Polypropylene Plastic	30	0000000	00000

Flame-Resistant High-Noise-Reducing Mufflers

Suitable for use with welding equipment, these mufflers are made of flame-resistant materials. Use them on loud equipment to filter exhaust fumes and reduce noise by 35 dB.

For technical drawings and 3-D models, click on a part number.

NPT Male Polybutylene Plastic Fitting
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
3/8	176 scfm @ 100 psi	145	140°	3 5/16"	Air	100	35	0000000	00000

Clog-Indicating High-Noise-Reducing Mufflers

Don’t let an unexpected clog interrupt your work. These mufflers have a filter that slides up slowly as it clogs to indicate when the muffler should be replaced. Use on air-powered drills and other loud equipment to filter exhaust fumes and reduce noise by 30-35 dBA.

For technical drawings and 3-D models, click on a part number.

NPT Male Polypropylene Plastic Fitting
Pipe Size	Max. Pressure, psi	Max. Temp., °F	Ht.	Dia.	For Use With	Removes Particle Size Down To, microns	Noise Reduction Rating, dBA		Each
3/8	70	158°	2 1/2"	1 1/16"	Air	70	30-35	0000000	000000

Compact Air-Intake Filters

Clean the air going into small blowers and air-powered equipment in tight spaces.

Filters with silencer reduce intake noise by up to 15 dBA while maximizing air flow.

Replacement elements are sold separately; polyester elements are more durable than paper elements.

For technical drawings and 3-D models, click on a part number.

Filter With Silencer

					O'all				Element
Pipe Size	Thread Type	Gender	Max. Flow Rate	Max. Temp., °F	Ht.	Dia.	Removes Particle Size Down To, microns	Filter Efficiency	Ht.	OD	Material		Each
Filters with Silencer
3/8	NPT	Male	8 scfm @ 14.7 psi	220°	2 3/4"	2 1/2"	2	99%	1"	2 1/4"	Paper	00000000	000000
3/8	NPT	Male	8 scfm @ 14.7 psi	220°	3 9/16"	3 1/4"	2	99%	1 3/8"	3"	Paper	00000000	00000

Replacement Elements

Paper
Ht.	OD	Removes Particle Size Down To, microns	Filter Efficiency	Housing Material		Each
1"	2 1/4"	2	99%	Plastisol	00000000	00000
1 3/8"	3"	2	99%	Plastisol	00000000	0000