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PROTEGO®
Excellence in Safety and Environment
Vapor Return Lines

Vent Lines for Storage Tanks and Loading Facilities

The safety of vapor return lines connected to storage tanks and loading facilities plays a critical role in maintaining both operational integrity and environmental compliance. These vent and vapor return systems are designed to allow the controlled movement of vapors, preventing hazardous pressure or vacuum Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. conditions while managing ignition and flame transmission risks.
Diagram showing vapor return lines and protection mechanisms for a storage tank, highlighting PROTEGO® devices and key systems.

Highlights

Robust Protection
Reliable flame arresting and pressure protection 
Customized Solutions
Tailored to local regulations, operating conditions, and customer requirements
Operational Integrity
Ensures safe vapor handling for storage tanks and loading facilities
Certified Safety Components
Tested for consistent safety performance and regulatory compliance

Products for Vapor Return Lines

In-Line Detonation Flame Arrester

DA-SB

Explosion Group

IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3
B / IIB
B / IIC

In-Line Detonation Flame Arrester

DR/ES-V

Explosion Group

IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3

Pressure and Vacuum Relief Valve, In-Line

DV/ZT

Pressure Range:

-2 up to -60 mbar

Vacuum Range:

2 up to 60 mbar

In-Line Detonation Flame Arrester

DR/ES

Explosion Group

IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3

Protection of Loading Systems 

Loading operations can displace flammable vapors into gas displacement or vapor recovery lines. This creates a potential ignition source Ignition source Any source with enough energy to initiate combustion. and flame transmission risk, particularly in tank truck and tank wagon loading stations.

Diagram showing vapor return lines and protection for loading systems, featuring trucks and rail cars equipped with PROTEGO® devices.

Highlights

Robust protection 
Specialized components designed to address vapor handling, pressure, and ignition risks
Safeguarding measures 
Maintain the integrity and safety of storage tanks and connected vapor systems
Explosion Protection 
through deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). and detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997). control in vent and vapor return lines
Effective management 
of pressure, vacuum, and vapor flow during storage and loading operations

Products for Vapor Return Lines

In-Line Detonation Flame Arrester

DA-SB

Explosion Group

IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3
B / IIB
B / IIC

In-Line Detonation Flame Arrester

DR/ES-V

Explosion Group

IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3

Pressure and Vacuum Relief Valve, In-Line

DV/ZT

Pressure Range:

-2 up to -60 mbar

Vacuum Range:

2 up to 60 mbar

In-Line Detonation Flame Arrester

DR/ES

Explosion Group

IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3

The devices have performed as promised with low leak rates and minimal maintenance Maintenance Combination of all technical and administrative actions, including supervision actions, intended to maintain or restore a unit in working order. effort. We highly recommend them. 

Project Manager

PetroChina

Your current location:
Local
Picture of Mrs. Auris-Nadine Hillen
Mrs. Auris-Nadine Hillen

CSR Department

+49 (0)5307 809 108