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Morrison Bros. 244 Series Female Threaded Emergency Vents

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SKUSizePressureCapacityWeightPrice
SKUMO244O0050AV Size3 in. Pressure8 oz/sq in. Capacity60994 SCFH Weight7.00 LBS

Price $105.21

SKUMO244O0060AV Size3 in. Pressure16 oz/sq inch Capacity:60994 SCFH Weight11.50 LBS

Price $109.84

SKUMO244O0170AV Size4 in. Pressure16 oz/sq inch Capacity103,799 SCFH Weight18.00 LBS

Price $135.74

SKUMO244O0800AV Size5 in. Pressure8 oz/sq inch Capacity184,651 SCFH Weight14.00 LBS

Price $176.44

SKUMO244O0900AV Size5 in. Pressure16 oz/sq inch Capacity184,651 SCFH Weight27.00 LBS

Price $225.39

SKUMO244O0200AV Size6 in. Pressure8 oz/sq inch Capacity278,660 SCFH Weight20.00 LBS

Price $184.21

SKUMO244O0400AV Size6 in. Pressure16 oz/sq inch Capacity278,660 SCFH Weight36.00 LBS

Price $233.94

SKUMO244O0600AV Size8 in. Pressure8 oz/sq inch Capacity504,818 SCFH Weight43.00 LBS

Price $309.20

SKUMO244O0700AV Size8 in. Pressure16 oz/sq inch Capacity504,818 SCFH Weight92.00 LBS

Price $387.32

Emergency vents are installed on aboveground storage tanks as a code requirement. Emergency vents provide high capacity pressure relief if the tank is exposed to fire. When the internal tank pressure reaches the opening pressure of the vent, the weighted cover moves up on the center pin allowing air to escape. When the internal tank pressure falls, the cover automatically lowers back onto the body and is automatically reset.

CFH = Cubic Feet Per Hour @ 2.5 PSI

 

Features

  • Automatically resets after opening
  • Durable powder coated cast iron covers
  • Female NPT mounting connection
  • CARB EVR models
  • Certified CFH flow capacities
  • Theft deterrent screens available

Construction Details

  • Body: Aluminum
  • Cover: Powder coated cast iron 
  • O-Ring: Viton A
  • Screen: 3 mesh stainless steel (3", 4", 5" & 6") (optional)

 

Certifications

When properly sized for the tank, this vent will conform to the following requirements:

  • NFPA 30
  • 30A
  • UL 142
  • ULC S601
  • API 2000
  • IFC
  • PEI RP200
  • California Air Resources Board Phase I AST EVR

Venting Guide

Venting Guide (PDF Download)