Safety Drum Vents

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.
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.
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.
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.
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
Combination Drum Vents and Fill Units
  • 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.
Cat No.
Size
Material Test Lab Listing
5000 2" Male NPS Brass FM
F5000 2" Male NPS 316 Stainless ––

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