Polypropylene Vent Plugs

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Removes Particle Size Down To

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DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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

Yes

Performance

Corrosion Resistant

Fitting Finished Material

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Clarity

14 Products

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

Polyethylene

Polyethylene Body and Fitting—Polyethylene breather vents can be cleaned with mineral spirits.

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



	1/8	1 scfm @ 100 psi	100	150	7/16"	1/2"	Air, Inert Gas	100	4471K11	00000


	1/4	3 scfm @ 100 psi	100	150	1/2"	11/16"	Air, Inert Gas	100	4471K12	0000
	3/8	9 scfm @ 100 psi	100	150	11/16"	15/16"	Air, Inert Gas	100	4471K13	0000
	1/2	10 scfm @ 100 psi	100	150	11/16"	15/16"	Air, Inert Gas	100	4471K14	0000
	3/4	20 scfm @ 100 psi	100	150	1 1/8"	1 1/2"	Air, Inert Gas	100	4471K15	0000
	1	22 scfm @ 100 psi	100	150	1 3/8"	1 7/8"	Air, Inert Gas	100	4471K16	0000

Moisture Absorbing Breather Vents

Keep moisture, dirt, and debris from entering your oil reservoirs. The silica gel inside these breather vents absorbs moisture from the air, preventing rust from forming inside your tanks. The gel changes from blue to pink as it becomes saturated, letting you know it needs to be replaced. A second filter blocks dust and other particles from getting inside. These breather vents allow air to flow in and out of your lubrication system, keeping excess vacuum or pressure from building up in cylinders, gear boxes, and tanks.

Steel Body—NPT Male


	Repair Kits

For an extended service life, use breather vents with a steel body. They are stronger than breather vents with plastic bodies and hold up better when exposed to chemicals. A window lets you check the color of the gel.

Repair Kits—No need to replace the entire unit when the gel is saturated—use rebuild kits to add fresh gel and to replace the window, filters, and gaskets.

	Vents										Repair Kits
	Pipe Size	For Tank Cap., gal.	Max. Flow Rate @ Pressure	Max. Temp., ° F	Ht.	Dia.	For Use With	Removes Particle Size Down To, μm		Each		Each
Steel Body



		2	1 to 800	85 scfm @ 1 psi	220	11 1/2"	10 1/8"	Air	1	3297T77	000000000	3297T771	0000000


		2	1 to 1,300	85 scfm @ 1 psi	220	13 3/4"	10 1/8"	Air	1	3297T78	00000000	3297T781	000000
		2	1 to 2,400	80 scfm @ 1 psi	220	18 1/4"	10 1/8"	Air	1	3297T79	00000000	3297T791	000000
		3	1 to 4,000	205 scfm @ 1 psi	220	19 1/4"	15 1/2"	Air	1	3297T81	00000000	3297T811	000000