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.

Highlights

Zero flashback incidents
when sized, located, and maintained per application
Higher uptime & lower losses
with field proven technology optimized for application efficiency
Lifecycle confidence
with maintenance friendly designs and a global aftersales service network
Compliance made simpler
with documented test data and independent 3rd party approvals

Products for Vapor Return Lines

Pressure and Vacuum Relief Valve

VD/SV-PA(L)

Pressure Range:

2 up to 60 mbar

Vacuum Range:

-2 up to -60 mbar

Emergency pressure relief valve

ER/V

Pressure Range:

5 up to 40 mbar

Liquid Detonation Flame Arrester

LDA-F

Explosion Group

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

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

Liquid Detonation Flame Arrester

LDA-F

Explosion Group

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

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 Road and Rail and Marine loading stations.

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
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 effort. We highly recommend them. 

Project Manager

PetroChina