BSPT Thread Mufflers | McMaster-Carr

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24 Products

About Noise, Filtration, and Flow Ratings

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

Style B is knurled for easy gripping.

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

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

Mufflers with Pipe Connection

BSPT Male Nickel-Plated Copper Fitting—Copper 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
B	1/8	18 scfm @ 100 psi	145	300°	13/16"	7/16"	Air	100	16 dB	0000000	00000
B	1/8	28 scfm @ 100 psi	145	300°	1 5/16"	1/2"	Air	100	16 dB	0000000	0000
BSPT Male Zinc-Plated Steel Fitting—Bronze Body
A	1/8	53 scfm @ 100 psi	125	300°	15/16"	__	Air, Inert Gas	40	17-22 dBA	0000000	0000
A	1/4	70 scfm @ 100 psi	125	300°	1 5/16"	__	Air, Inert Gas	40	17-22 dBA	0000000	0000
A	3/8	175 scfm @ 100 psi	125	300°	1 1/2"	__	Air, Inert Gas	40	17-22 dBA	0000000	0000
A	1/2	263 scfm @ 100 psi	125	300°	2"	__	Air, Inert Gas	40	17-22 dBA	0000000	0000
A	3/4	438 scfm @ 100 psi	125	300°	2 5/16"	__	Air, Inert Gas	40	17-22 dBA	0000000	00000
A	1	613 scfm @ 100 psi	125	300°	2 15/16"	__	Air, Inert Gas	40	17-22 dBA	0000000	00000
A	1 1/4	700 scfm @ 100 psi	125	300°	3 1/2"	__	Air, Inert Gas	90	17-22 dBA	0000000	00000
A	1 1/2	1,314 scfm @ 100 psi	125	300°	4"	__	Air, Inert Gas	90	17-22 dBA	0000000	00000
A	2	2,190 scfm @ 100 psi	125	300°	4 13/16"	__	Air, Inert Gas	90	17-22 dBA	0000000	00000

Compact High-Flow Mufflers

With Male 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.

BSPT 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
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	00000
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	17-22	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.

316 stainless steel offers excellent corrosion resistance.

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

BSPT Male 316 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
B	1/8	19 scfm @ 100 psi	150	1000°	1 1/2"	Air, Inert Gas	100	18-20 dB	0000000	000000
A	1/4	36 scfm @ 100 psi	150	1000°	2 1/16"	Air, Inert Gas	100	18-20 dB	0000000	00000
A	3/8	65 scfm @ 100 psi	150	1000°	2 1/16"	Air, Inert Gas	100	18-20 dB	0000000	00000
A	1/2	90 scfm @ 100 psi	150	1000°	2 5/16"	Air, Inert Gas	100	18-20 dB	0000000	00000