Conval Equipment Ltd.

Emergency Vents
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EMERGENCY PRESSURE VENT
Series No. 7800

Protectoseal Series No. 7800 Emergency Pressure Vents are designed to provide emergency relief capacity beyond that furnished by the operating vent on tanks. The Series No. 7800 vents do not provide vacuum relief. Vacuum relief must be supplied by independent operating vents 

 Under normal operating conditions, the vent pallet assembly is closed providing an effective vapor seal. In the event of an emergency (fire involvement of the tank), the pallet lifts in response to the increased pressure in the tank's vapor space. Vapor is expelled, thereby protecting the tank from dangerous over-pressurization. Pallet assembly automatically closes and reseals when the pressure is reduced.

Emergency relief venting capacity may be provided by additional Pressure / Vacuum Conservation Vents, Emergency Pressure Vents, or Pressure / Vacuum Manhole Cover Vents.
Vents directly to atmosphere
Sizes 2" (50.8mm) through 24" (609.6mm)
Settings achieved by weight loading
Patented, TeflonŽ "Air-Cushioned Seating"
Low-leak pallet design - certified test reports
 Non-metallic (PVC & FRP) construction available
Design & light weight permit easy handling
Factory tested and certified

Materials of Construction*

SERIES SIZE BASE
FLANGE/SEAT		 HOOD PALLET PALLET
DIAPHRAGM
7800 6"-12" Alum./Alum. Aluminum Aluminum TeflonŽ
7800 16"-24" Steel/316 S.S.. Steel Aluminum TeflonŽ
C7800 2"-24" Steel/316 S.S. Steel 316 S.S. TeflonŽ
E7800 2"-12" Alum./Alum. Aluminum 316 S.S. TeflonŽ
F7800 2"-24" 316 S.S./316 S.S. 316 S.S. 316 S.S. TeflonŽ
M7800 2"-24" Hast. C276/Hast. C276 Hast. C276 Hast. C276 TeflonŽ

*Other exotic metals & coatings available.

Flange mating: 2" - 12" Aluminum: Mates with 125# FF ANSI
Other metals: Mates with 150# RF ANSI
16" - 24" Flanged to mate with applicable ANSI 125# FF Flange or API manhole bolting pattern.
 

 

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Last modified: January 22, 2004