Stainless Steel Vent Caps

Filter by

Material

Body Material

System of Measurement

Pipe Size

Fitting Connection

Gender

Thread Type

Screen Material

For Use With

Diameter

Fitting Material

Environment

Screen Construction

Removes Particle Size Down To

Thread Size

Height

Maximum Temperature

Shape

Component

REACH

RoHS

Filter Material

Export Control Classification Number (ECCN)

2B999

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Maximum Flow Rate @ Pressure

52 Products

Weather Resistant Breather Vents


Threaded NPT Male, Style A	Threaded NPT Female, Style B

Shield outdoor pipe and tank openings from the environment. Also known as vent caps, these breather vents have screens to allow air flow while blocking debris. Use them to prevent excess vacuum and pressure in your equipment.

Threaded NPT Male

Style A

									Screen
	Style	Pipe Size	Max. Flow Rate @ Pressure	Max. Pressure	Max. Temp.	Ht.	Dia.	For Use With	Material	Construction	Mesh Size	Removes Particle Size Down To, μm		Each
Zinc-Plated Steel Body and Fitting



		A	3/8	Not Rated	Not Rated	Not Rated	1 1/4"	1 1/4"	Air	304 Stainless Steel	Wire Mesh	100 × 100	140	36635K38	000000


		A	1/2	Not Rated	Not Rated	Not Rated	1 7/16"	1 1/4"	Air	304 Stainless Steel	Wire Mesh	100 × 100	140	36635K39	00000

Threaded NPT Female

Style B

									Screen
	Style	Pipe Size	Max. Flow Rate @ Pressure	Max. Pressure	Max. Temp.	Ht.	Dia.	For Use With	Material	Construction	Mesh Size	Removes Particle Size Down To, μm		Each
Zinc-Plated Iron Body and Fitting



		B	3/4	Not Rated	Not Rated	Not Rated	1 3/16"	1 13/16"	Air	304 Stainless Steel	Wire Mesh	30 × 30	880	36635K41	000000


		B	1	Not Rated	Not Rated	Not Rated	1 5/16"	2 1/4"	Air	304 Stainless Steel	Wire Mesh	30 × 30	880	36635K42	00000
		B	1 1/4	Not Rated	Not Rated	Not Rated	1 3/8"	2 3/4"	Air	304 Stainless Steel	Wire Mesh	30 × 30	880	36635K43	00000
		B	1 1/2	Not Rated	Not Rated	Not Rated	1 1/2"	3 1/8"	Air	304 Stainless Steel	Wire Mesh	30 × 30	880	36635K44	00000
		B	2	Not Rated	Not Rated	Not Rated	1 11/16"	3 7/8"	Air	304 Stainless Steel	Wire Mesh	30 × 30	880	36635K45	00000
		B	3	Not Rated	Not Rated	Not Rated	2 1/2"	5 1/2"	Air	304 Stainless Steel	Wire Mesh	30 × 30	880	36635K46	000000
		B	4	Not Rated	Not Rated	Not Rated	2 1/2"	6 1/2"	Air	304 Stainless Steel	Wire Mesh	20 × 20	864	36635K47	000000

Corrosion Resistant Breather Vents

These breather vents withstand corrosion in damp environments. Use them to prevent excess vacuum and pressure in cylinders, gear boxes, and tanks and to block debris from entering equipment.

Threaded NPT Male

304 Stainless

Steel

304 Stainless Steel Body and Fitting—Stainless steel breather vents stand up to higher temperatures than polyethylene breather vents.

	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Ht.	For Use With	Removes Particle Size Down To, μm		Each
304 Stainless Steel Body and Fitting



	1/8	26 scfm @ 100 psi	150	400	1/2"	Air, Inert Gas	100	4456K11	00000


	1/4	35 scfm @ 100 psi	150	400	11/16"	Air, Inert Gas	100	4456K12	00000
	3/8	87 scfm @ 100 psi	150	400	13/16"	Air, Inert Gas	100	4456K13	00000
	1/2	131 scfm @ 100 psi	150	400	15/16"	Air, Inert Gas	100	4456K14	00000
	3/4	219 scfm @ 100 psi	150	400	15/16"	Air, Inert Gas	100	4456K15	00000
	1	306 scfm @ 100 psi	150	400	1 3/16"	Air, Inert Gas	100	4456K16	00000

Threaded UNF Male


303 Stainless Steel	316 Stainless Steel

303 Stainless Steel Body and Fitting—Stainless steel breather vents stand up to higher temperatures than polyethylene breather vents.

316 Stainless Steel Body and Fitting—316 stainless steel breather vents resist corrosion better than 303 and 304 stainless steel breather vents and stand up to higher temperatures than polyethylene breather vents.

Viton® Fluoroelastomer O-Ring—Those with a Viton® Fluoroelastomer O-ring offer extra protection against leaks.

	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Ht.	For Use With	O-Ring Material	Removes Particle Size Down To, μm		Each
303 Stainless Steel Body and Fitting



	10-32	Not Rated	250	400	7/16"	Air, Inert Gas	Viton® Fluoroelastomer	40	8556T25	000000


	316 Stainless Steel Body and Fitting



			10-32	Not Rated	250	400	7/16"	Air, Inert Gas	Viton® Fluoroelastomer	40	8556T26	00000

Threaded Metric Male

316 Stainless

Steel

Viton® Fluoroelastomer O-Ring—Those with a Viton® Fluoroelastomer O-ring offer extra protection against leaks.

	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Ht.	For Use With	O-Ring Material	Removes Particle Size Down To, μm		Each
316 Stainless Steel Body and Fitting



	M5	Not Rated	250	400	7/16"	Air, Inert Gas	Viton® Fluoroelastomer	40	8556T27	000000

Standard Duct and Fittings

Deliver air for a range of HVAC applications, including exhaust and dust collection. Our basic duct, the round shape creates smoother, more efficient airflow than rectangular and oval duct. The male end is slightly smaller than the female, so sections join without clamps or tools.

Rain Caps

Top off vertical duct and exhaust stacks to prevent corrosion and blockages that can disrupt airflow.

Corrosion-Resistant 304 Stainless Steel—The most corrosion-resistant metal duct we sell. It won’t rust or degrade in systems that exhaust chemical fumes or vent heat from industrial ovens and dryers.

			Corrosion-Resistant 304 Stainless Steel
Duct Size	ID	Ga.		Each



	4	4"	26	1767K32	000000


	6	6"	26	1767K34	00000
	8	8"	26	1767K36	00000
	10	10"	26	1767K37	000000
	12	12"	26	1767K38	000000

Lockable Breather Vents with Cap

Secure access to vented openings in pipe and tanks—the cap can be locked to prevent tampering. These breather vents allow you to add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Use them to stop debris from entering your tank. Breather vents mount on top of standard tank openings with included hardware. Padlock is not included.

Flange Mount

Steel with 304

Stainless Steel

Screen

	Max. Pressure	Ht.	For Use With	Cap Material	Screen Material	No. of Bolt Holes	Bolts Included	Removes Particle Size Down To, μm	For Max. Padlock Shackle Dia.		Each
Steel Body



	2 1/8"	Not Rated	5 1/8"	Air, Oil	Steel	304 Stainless Steel	6	Yes	10	3/8"	3853N13	000000


	2 1/8"	Not Rated	5 1/8"	Air, Oil	Steel	304 Stainless Steel	6	Yes	40	3/8"	4473K45	00000

Threaded NPT Male

Aluminum Body

	Max. Pressure	Max. Temp., ° F	Ht.	Dia.	For Use With	Cap Material	Screen Material	For Max. Padlock Shackle Dia.		Each
Aluminum Body and Fitting



	2	Not Rated	200	4 1/2"	5 5/8"	Air, Oil, Water	Aluminum	Stainless Steel	3/8"	4906K11	000000

Hazardous Location Threaded Breather Vents

Safe for use around flammable and combustible gases, vapors, fibers, and dust, these vents allow air to flow through enclosures to maintain consistent pressure and reduce moisture buildup as temperatures change. They also stand up to washdowns. Made from 303 stainless steel, these vents will not corrode from salt water and chemicals.

NPT

Environment	Hazardous Location Protection Type	Enclosure Rating	Hazardous Location Rating	Certification	UL File No.		Each







303 Stainless Steel

1/2	7/8"	7/8"	Corrosive, Dusty, Hazardous, Outdoor, Washdown, Wet	Dust-Ignition Proof, Explosion Proof	NEMA 4X	NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEC Class III Divisions 1, 2	UL Listed	E34997	7326N11	0000000

Breather Vents with Cap


Style A	Style C	Style D	Replacement Screen

Add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Breather vents stop debris from entering your tank. Mount them on top of standard tank openings with included hardware.

Style A


	Replacement Screen

	Vents												Replacement Screens
	For Opening Dia.	Max. Flow Rate, gpm	Max. Temp., ° F	Ht.	For Use With	Screen Material	Mount Type	No. of Bolt Holes	Bolts Included	Removes Particle Size Down To, μm		Each		Each
Steel Body







				304 Stainless Steel Cap

				2 1/8"	20	220	5"	Air, Oil	304 Stainless Steel	Flange	6	Yes	40	4473K21	000000	4473K32	000000




						Steel Cap

						2 1/8"	192	250	5 1/8"	Air, Oil	304 Stainless Steel	Flange	6	Yes	40	4473K22	00000	4473K33	0000

Style C


	Replacement Screen

	Vents												Replacement Screens
	For Opening Dia.	Max. Flow Rate, gpm	Max. Temp.	Ht.	For Use With	Screen Material	Mount Type	No. of Bolt Holes	Bolts Included	Removes Particle Size Down To, μm		Each		Each
Steel Body







				Steel Cap

				2 1/8"	115	Not Rated	5 1/8"	Air, Oil	304 Stainless Steel	Flange	6	Yes	10	4473K152	000000	4473K33	00000

Style D


	Replacement Screen

	Vents															Replacement Screens
	For Opening Ht.	For Opening Wd.	Max. Flow Rate, gpm	Max. Temp.	Ht.	Wd.	Dp.	For Use With	Screen Material	Mount Type	No. of Bolt Holes	Bolts Included	Removes Particle Size Down To, μm		Each		Each
Nylon Body







				Steel Cap

				3 1/2"	3"	115	Not Rated	6 1/8"	4 5/8"	4"	Air, Oil	304 Stainless Steel	Flange	7	Yes	10	4473K154	000000	4473K33	00000


				3 1/2"	3"	192	Not Rated	6 1/8"	4 5/8"	4"	Air, Oil	304 Stainless Steel	Flange	7	Yes	40	4473K153	00000	4473K33	0000

High-Temperature Chimney Vent Pipe and Fittings

Built to withstand temperatures up to 1000° F, these vent pipes and fittings are for use with boilers, furnaces, stoves, and other equipment that is fired by gas, oil, wood, or coal.

To join pipes and connectors, twist a male end into a female end and secure with the included locking band.

Rain Caps

			304 Stainless Steel
Chimney Pipe Size	Ga.	Certification		Each



	6	28	UL Listed	1716K46	0000000


	8	28	UL Listed	1716K47	000000
	10	28	UL Listed	1716K48	000000

Breather Vents


Style G	Style F

Protect against excess vacuum and pressure in cylinders, gear boxes, enclosures, manifolds, and tanks. You can also use these breather vents to block debris from entering equipment.

Style G—Style G has a slotted drive for installation with a screwdriver.

	Max. Pressure, psi	Max. Temp., ° F	Ht.	Dia.	For Use With	Removes Particle Size Down To, μm		Each
UNF Male







	316 Stainless Steel Body and Fitting

	G	10-32	10 scfm @ 100 psi	100	750	7/16"	3/16"	Air, Inert Gas	10	8584T31	000000


	UNC Male







					316 Stainless Steel Body and Fitting

					G	5/16"-18	25 scfm @ 100 psi	100	750	1 7/16"	5/16"	Air, Inert Gas	10	8584T32	00000


					G	3/8"-16	50 scfm @ 100 psi	100	750	1"	3/8"	Air, Inert Gas	10	8584T33	00000

Washdown Weather Resistant Breather Vents

These breather vents are rated NEMA 6 to withstand periodic submersion in water. Install them in enclosures to stop the buildup of pressure and vacuum and to prevent debris from entering equipment. Breather vents can be used with enclosures that are rated NEMA 4, 12, and 13 for washdown environments and splashing oil and coolant.

Threaded Metric Male

303

Stainless

Steel Body

	Max. Flow Rate @ Pressure	Max. Pressure, psi	Max. Temp., ° F	Ht.	Dia.	For Use With	Environment	Enclosure Rating	O-Ring Material	Removes Particle Size Down To, μm		Each
303 Stainless Steel Body and Fitting



	M3	Not Rated	1.4	158	5/16"	1/4"	Air	Dusty, Outdoor, Submersible, Washdown, Wet	NEMA 6	EPDM	3	1226T13	000000

Self-Draining Breather Vents

Minimize moisture buildup in enclosures. Also known as drain plugs, these breather vents have a small outlet that allows condensation to drain. They have a silicone O-ring above the threads for a tight seal. Install them at the lowest point of the enclosure. Breather vents meet IP66 for protection in washdown environments. Use them to prevent excess vacuum and pressure in cylinders, gear boxes, and tanks and to block debris from entering equipment.

Threaded NPT Male

Image of Product. Bottom orientation. Breather Vents. Self-Draining Breather Vents.

316 Stainless Steel Body and Fitting—316 stainless steel breather vents have excellent corrosion resistance.

	Max. Flow Rate @ Pressure	Max. Pressure	Max. Temp., ° F	Ht.	Dia.	For Use With	Environment	Hazardous Location Protection Type	Enclosure Rating	Hazardous Location Rating	O-Ring Material	Certification	Features		Each
316 Stainless Steel Body and Fitting



	1/4	Not Rated	Not Rated	320	1 1/16"	11/16"	Air	Corrosive, Dusty, Outdoor, Washdown, Wet	—	IP66, NEMA 4X	—	Silicone Rubber	—	Drain	8602T31	000000


	1/2	Not Rated	Not Rated	320	1 1/8"	1"	Air	Corrosive, Dusty, Hazardous, Outdoor, Washdown, Wet	Increased Safety, Protection by Enclosure	IP66, NEMA 4X	ATEX I M2 Ex E I Mb; ATEX II 2 GD Ex E IIC Gb Ex Tb IIIC Db; IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IECEx Ex E I/IIC Mb/Gb; IECEx Ex IIIC Tb Db	Silicone Rubber	CE Marked	Drain	8602T32	00000

Rubber Drain Pipe Plugs

Seal unthreaded pipe ends with these plugs. They come with a band that clamps over the outside wall of your pipe and tightens with a screwdriver.

Plugs with Ventilation Hole

Plugs with Ventilation

Hole

Plugs with a ventilation hole have a chamber with a ball that seals the plug when your pipe system is filled and purges air when it’s not.

	For Pipe OD	Max. Water Back Pressure	Max. Air Back Pressure	Temp. Range, ° F	Material		Each
Clamp-On Female



	3	3.28" to 3.72"	Not Rated	Not Rated	-40 to 180	Neoprene	2394K102	000000


	4	4.26" to 4.74"	Not Rated	Not Rated	-40 to 180	Neoprene	2394K103	00000

Hazardous Location Electrical Enclosure Drain Vents


Glass-Filled Nylon	316 Stainless Steel

Safe for use around hazardous gasses and dust, these drain vents maintain steady pressure and prevent moisture buildup from temperature changes inside enclosures. They allow air to flow through the enclosures while protecting the contents from washdowns, dirt, and weather. Install these drain vents at the lowest point on an enclosure, so moisture can drip out.

Increased Safety—Increased-safety drain vents keep sparks, high temperatures, or current creepage inside an enclosure, so they won’t ignite flammable gasses and dust.

Flameproof—Flameproof drain vents reduce the risk of igniting flammable gasses and dust if an explosion occurs within the enclosure.

Glass-Filled Nylon—Glass-filled nylon drain vents are lightweight yet durable. They’re good for most areas.

316 Stainless Steel—316 stainless steel drain vents stand up to corrosion. They’re best for areas with salt water.

	Nut Material	O-Ring Material	Color	Max. Temp., ° F	Hazardous Location Rating		Each
Increased-Safety Drain Vents







	Glass-Filled Nylon

	M20 × 1.5 mm	1 3/16"	NEMA 4X, IP66	316 Stainless Steel	Silicone Rubber	Black	175	IEC Zone 1 Groups IIC, IIB, IIA IEC Zone 21 Groups IIIC, IIIB, IIIA NEC Class I Division 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEC Zone 1 Groups IIC, IIB, IIA	5901N16	0000000




			316 Stainless Steel

			M20 × 1.5 mm	1"	NEMA 4X, IP66	316 Stainless Steel	Buna-N	—	185	ATEX Ex E IIC Gb ATEX Ex Tb IIIC Db IECEx Ex E IIC Gb IECEx Ex Tb IIIC Db NEC Class I Division 2 Groups A, B, C, D	5901N11	000000


			M25 × 1.5 mm	1 5/16"	NEMA 4X, IP66	316 Stainless Steel	Buna-N	—	185	ATEX Ex E IIC Gb ATEX Ex Tb IIIC Db IECEx Ex E IIC Gb IECEx Ex Tb IIIC Db NEC Class I Division 2 Groups A, B, C, D	5901N2	000000


			Flameproof Drain Vents







							316 Stainless Steel

							M20 × 1.5 mm	1"	NEMA 4X, IP66	—	Silicone Rubber	—	300	ATEX Ex D IIC Gb ATEX Ex E IIC Gb ATEX Ex Tb IIIC Db IECEx Ex D IIC Gb IECEx Ex E IIC Gb IECEx Ex Tb IIIC Db NEC Class I Division 2 Groups A, B, C, D	5901N13	000000


							M25 × 1.5 mm	1 5/16"	NEMA 4X, IP66	—	Silicone Rubber	—	300	ATEX Ex D IIC Gb ATEX Ex E IIC Gb ATEX Ex Tb IIIC Db IECEx Ex D IIC Gb IECEx Ex E IIC Gb IECEx Ex Tb IIIC Db NEC Class I Division 2 Groups A, B, C, D	5901N14	000000

Hazardous Location Electrical Enclosure Drains

Safe for use around flammable and combustible gases, vapors, fibers, and dust, these drains let moisture buildup from temperature changes inside enclosures drip out to keep electronics dry. Mount them at the bottom of enclosures.

1/2 Pipe Size—_1/2 pipe size drains also stand up to washdowns and weather.

Pipe Size	Thread Type	Drive Style	Hex Size	Head Dia.	Ht.	Material	Hazardous Location Protection Type	Hazardous Location Rating	Enclosure Rating	Environment	UL File No.	CSA File No.	Specs. Met	Certification		Each
3/8	NPT Male	External Hex	7/8"	15/16"	1 3/4"	303 Stainless Steel	Dust-Ignition Proof, Explosion Proof	NEC Class I Divisions 1, 2 Groups C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEC Class III Divisions 1, 2	—	Hazardous	E34997	065181_0_000	UL 886	UL Listed, CSA Certified	7495N112	000000
1/2	NPT Male	External Hex	7/8"	15/16"	1 3/4"	304 Stainless Steel	Dust-Ignition Proof, Explosion Proof	NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEC Class III Divisions 1, 2	NEMA 4X	Corrosive, Dusty, Hazardous, Washdown, Outdoor, Wet	E34997	065181_0_000	UL 886	UL Listed, CSA Certified	7495N111	000000