Safety Drum Vents
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Nos. 522 and F522 Drum Vents
- 2" Drum Vents safely vent side bung opening of 30 and 55 gallon drums.
- Has automatic pressure relief (opening between 5 and 8 p.s.i.) and manual vacuum relief.
- Flame arrester prevents propagation of fire through vent passage.
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Nos. 5522 and F5522 Drum Vents
- 2" Drum Vents especially suited for horizontal storage drums with 2" bung opening at end.
- Automatic pressure relief at approximately 5 p.s.i. Manual vacuum relief.
- Fusible emergency relief plug melts at 135° F. ( 57°C.) venting pressure and preventing drum rupture in case of fire.
- Perforated metal flash arrester prevents accidental ignition of vapor within drum.
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No. 525 Drum Vent
- 3/4" Drum vent provides continuous, safe venting of storage drums where a 2" bung opening is not available.
- Perforated metal flash arrester prevents flashbacks through vent passage.
- Protective hood shields flash arrester and prevents dust and dirt from entering drum.
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No. 526 Drum Vent Adapter
- Provides elbow-type mount for Nos. 522 and F522 Drum Vents.
- Especially recommended to keep flame arrester plates above liquid level when storing viscous flammables.
- Mounts in 3/4" bung openings.
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| Cat No. |
Size |
Material |
Test Lab Listing |
| 522 |
2" Male NPS |
Brass & Aluminum |
FM |
| F522 |
2" Male NPS |
316 Stainless |
FM |
| 525 |
3/4 Male NPT |
Brass |
–– |
| 526 |
3/4 Male NPS & 2" Female NPS |
Steel |
–– |
| 5522 |
2" Male NPS |
Brass |
FM |
| F5522 |
2" Male NPS |
316 Stainless |
FM |
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Combination Drum Vents and Fill Units |
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- Automatic vacuum relief, at approximately 2" W.C., facilitates liquid flow during dispensing.
- Removable cap assembly permits perforated metal flash arrester to remain threaded in bung opening for safety during filling.
- Automatic pressure relief valve opens at 5 to 6 p.s.i.
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| Cat No. |
Size |
Material |
Test Lab Listing |
| 5000 |
2" Male NPS |
Brass |
FM |
| F5000 |
2" Male NPS |
316 Stainless |
–– |
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