A
Evaporation Control
Keeps storage tank vapors contained up to the relief set point, reducing product evaporation loss.
Mechanical
Protectoseal Flame Arresters & Conservation Vents
Protectoseal
Weight or spring-loaded pressure and vacuum relief conservation vent to prevent evaporation loss.
1" to 24"
SIZE RANGEWeight/Spring
LOAD SETTING TYPEANSI/JIS
FLANGE CONNECTIONATEX / UL
STANDARDS COMPLIANCEWhy Choose Us
Engineering Advantages
Weight or spring-loaded pressure and vacuum relief conservation vent to prevent tank evaporation loss.
B
Dual Relief Pallets
Independent pressure and vacuum pallets protect tank structural integrity against pressure/vacuum collapse.
C
Cushioned Air-Seals
FEP Teflon or elastomer pallet seals ensure low leakage below the set relief point.
D
Corrosion Resistant
Constructed in Aluminum, Carbon Steel, 316 Stainless Steel, or Hastelloy to resist chemical attack.
Technical Data
Operational Matrix
Product Type
Pressure / Vacuum Relief Vent
Load Setting
Weight loaded or Spring loaded
Sizes
1" (DN 25) to 24" (DN 600)
Materials
Aluminum, Carbon Steel, 316 SS, Hastelloy, FRP
Gas Groups
NEC Groups B, C, D; IEC Groups IIA, IIB, IIC
Sizing Software
PRO-FLOW III® (API 2000 compliant)
Service Conditions
Industrial Applications
APP-01
Refinery Product Storage
Vapor management and evaporation control for high-value hydrocarbon storage tanks.
Mechanical
APP-02
Chemical Holding Tanks
Corrosion-resistant relief protection for chemical tanks.
Mechanical
APP-03
Vapor Recovery Loops
Integrates relief loops in tank farm vapor collection headers.
Mechanical
Need a Protectoseal Conservation Vent?
Our technical engineering team will help you calculate breathing requirements and set points using PRO-FLOW III®.