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PROTEGO® Valves

PROTEGO® Valves

Reduced emissions - Safe operation of your plant

PROTEGO® Breather Valves

Reduction of Vapour Emissions & Safe Plant Operation

 

In closed containers or tanks containing liquids, effectively managing pressure is crucial. To ensure secure operations, it is vital to have a dependable mechanism for releasing accumulated pressure and compensating for vacuum conditions. PROTEGO® addresses this requirement precisely through our Overpressure and Vacuum Relief Valves. These valves, equipped with weight-loaded or spring-loaded valve pallets, play a crucial role in maintaining optimal pressure levels within tanks.

Whether dealing with overpressure or vacuum situations during processes such as loading, unloading, steam cleaning, or due to thermal effects, PROTEGO® valves offer a robust solution. Our valves, meticulously designed, function as pressure relief valves, vacuum relief valves, or combined pressure and vacuum relief valves.

Industries such as oil and gas, petroleum, chemical, pharmaceutical, and bio-energy depend on PROTEGO® valves to ensure the safety and efficiency of their operations. The innovative design and superior performance of our valves make them the trusted choice for a wide range of applications in the industrial landscape.

10% Technology (set pressure close to relieving pressure)
Extreme tightness
Very high flow capacity
Maintenance-friendly design

Find the perfect valve for your application

Interested in Valves?

Contact our specialists for your individual requirements.

Contact us here!

Pressure / Vacuum Relief Valves

without integrated Flame Arresters

PROTEGO® pressure/vacuum relief valves are used as in-breathing and out-breathing valves, pressure relief valves, conservation valves, and for simple control and venting of tanks and equipment when an unallowable vacuum or pressure is exceeded. PROTEGO® valves are available as pressure relief valves, vacuum relief valves, or as combined pressure/vacuum relief valves.

Product filter
43 Results
D/KSM
D/KSM
Pressure Relief Valve

pressure range:

5 up to 100 mbar

D/PA(L)
D/PA(L)
Pressure or Vacuum Relief Valve

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

D/PA(L)-F
D/PA(L)-F
Pressure or Vacuum Relief Valve

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

D/SVL
D/SVL
Pressure Relief Valve

pressure range:

2 up to 60 mbar

DV/ZT
DV/ZT
Pressure and Vacuum Relief Valve, In-Line

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

DV/ZT-F
DV/ZT-F
Pressure and Vacuum Relief Valve, In-Line

pressure range:

60 up to 500 mbar

vacuum range:

-3.5 up to -50 mbar

DV/ZU
DV/ZU
Pressure and Vacuum Relief Valve, In-Line

pressure range:

2 up to 60 mbar

vacuum range:

-3.5 up to -50 mbar

DV/ZU-F
DV/ZU-F
Pressure and Vacuum Relief Valve, In-Line

pressure range:

60 up to 500 mbar

vacuum range:

-3.5 up to -50 mbar

DV/ZW
DV/ZW
Pressure and Vacuum Relief Valve, In-Line

pressure range:

2 up to 60 mbar

vacuum range:

-3.5 up to -50 mbar

DV/ZW-F
DV/ZW-F
Pressure and Vacuum Relief Valve, In-Line

pressure range:

60 up to 500 mbar

vacuum range:

-3.5 up to -50 mbar

DZ/E
DZ/E
Pressure or Vacuum Relief Valve, In-Line

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

DZ/E-F
DZ/E-F
Pressure or Vacuum Relief Valve, In-Line

pressure range:

60 up to 500 mbar

vacuum range:

-60 up to -500 mbar

DZ/EA
DZ/EA
Pressure or Vacuum Relief Valve, In-Line

pressure range:

5 up to 50 mbar

vacuum range:

-5 up to -50 mbar

DZ/EA-F
DZ/EA-F
Pressure or Vacuum Relief Valve, In-Line

pressure range:

60 up to 500 mbar

vacuum range:

-60 up to -500 mbar

DZ/T
DZ/T
Pressure or Vacuum Relief Valve, In-Line

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

DZ/T-F
DZ/T-F
Pressure or Vacuum Relief Valve, In-Line

pressure range:

60 up to 500 mbar

vacuum range:

-60 up to -500 mbar

ER-V-LP
ER-V-LP
Emergency pressure relief valve

pressure range:

3.4 up to 15 mbar

ER/V
ER/V
Emergency pressure relief valve

pressure range:

5 up to 40 mbar

ER/V-F
ER/V-F
Pressure Relief Valve

pressure range:

60 up to 500 mbar

ER/VH
ER/VH
Pressure Relief Valve

pressure range:

25 up to 60 mbar

P/EL
P/EL
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

P/ELR
P/ELR
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

PM-HF
PM-HF
Pressure/Vacuum Relief Valve

pressure range:

10 up to 1034 mbar

vacuum range:

-2.2 up to -7 mbar

PM/(D)S
PM/(D)S
Pressure/Vacuum Relief Valve

pressure range:

10 up to 300 mbar

vacuum range:

-3 up to -7 mbar

PV/EL
PV/EL
Pressure and Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -35 mbar

PV/ELR
PV/ELR
Pressure and Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -50 mbar

R/KSM
R/KSM
Pressure or Vacuum Relief Valve, In-Line

pressure range:

5 up to 100 mbar

vacuum range:

-5 up to -100 mbar

SD/BS-H
SD/BS-H
Pressure Relief Valve

pressure range:

5 up to 210 mbar

SV/E-1-0
SV/E-1-0
Vacuum Relief Valve

vacuum range:

-2 up to -60 mbar

SV/T-0-H
SV/T-0-H
Vacuum Relief Valve

vacuum range:

-7 up to -50 mbar

V/KSM
V/KSM
Vacuum Relief Valve

vacuum range:

-5 up to -100 mbar

V/SV
V/SV
Vacuum Relief Valve

vacuum range:

-2 up to -60 mbar

V/SV-XL
V/SV-XL
Vacuum Relief Valve

vacuum range:

-2 up to -16 mbar

V/SV-XXL
V/SV-XXL
Vacuum Relief Valve

vacuum range:

-2 up to -16 mbar

VD/KSM
VD/KSM
Pressure and Vacuum Relief Valve

pressure range:

5 up to 100 mbar

vacuum range:

-5 up to -100 mbar

VD/KSM-PA
VD/KSM-PA
Pressure and Vacuum Relief Valve

pressure range:

5 up to 100 mbar

vacuum range:

-5 up to -100 mbar

VD/SV
VD/SV
Pressure and Vacuum Relief Valve

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

VD/SV-PA(L)
VD/SV-PA(L)
Pressure and Vacuum Relief Valve

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

VN-A-PCPF
VN-A-PCPF
Pressure/Vacuum Relief Valve,

pressure range:

20 up to 1034 mbar

vacuum range:

2 up to 7 mbar

VN-A-PCPM
VN-A-PCPM
Pressure/Vacuum Relief Valve

pressure range:

20 up to 1034 mbar

vacuum range:

-2 up to -7 mbar

VN-VL-L
VN-VL-L
Vacuum Relief Valve

vacuum range:

-2.7 up to -70 mbar

VN-VU
VN-VU
Vacuum Relief Valve

vacuum range:

-2.6 up to -25 mbar

ZM-R
ZM-R
Blanketing Valve

pressure range:

up to 500 mbar

vacuum range:

up to -200 mbar

Pressure / Vacuum Relief Valves

with integrated Flame Arrester

These valves are used to protect plant components (e.g. tanks, pipelines) from exceeding maximum allowable operating pressures and vacuum. They offer additional protection against atmospheric deflagration, and some valves also protect against endurance burning.

10% Technology

10% full-lift technology results in product savings (possible reduction of product losses greater than 30%).

Extreme Tightness

Lowest possible product losses and reduced environmental pollution.

Integrated Flame Arrester

Protection against atmospheric deflagration and endurance burning.

Product filter
29 Results
BE/HR-D
BE/HR-D
Pressure Relief Valve

pressure range:

2 up to 35 mbar

Explosion Group:

IIA1,

D / IIA

D-SVL-EB-IIA
D-SVL-EB-IIA
Pressure Relief Valve

pressure range:

2 up to 60 mbar

Explosion Group:

IIA1,

D / IIA

DE-S-IIC
DE-S-IIC
High Velocity Pressure Relief Valve

pressure range:

60 up to 350 mbar

Explosion Group:

B / IIC

DE/S-IIB
DE/S-IIB
High Velocity Pressure Relief Valve

pressure range:

100 up to 500 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3,

B / IIB

DE/S-IIB3
DE/S-IIB3
High Velocity Pressure Relief Valve

pressure range:

100 up to 500 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

DE/S-MK VI - IIB3
DE/S-MK VI - IIB3
High Velocity Pressure Relief Valve

pressure range:

60 up to 350 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

DR/ES-V
DR/ES-V
In-Line Detonation Flame Arrester

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

P/EB
P/EB
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

Explosion Group:

IIA1,

D / IIA

P/EB-E
P/EB-E
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1

P/EBR
P/EBR
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

P/EBR-E-IIB1
P/EBR-E-IIB1
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1

P/EBR-E-IIB3
P/EBR-E-IIB3
Pressure Relief Valve

pressure range:

3.5 up to 210 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1

PV/EB
PV/EB
Pressure/Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

IIA1,

D / IIA

PV/EB-E
PV/EB-E
Pressure/Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1

PV/EBR
PV/EBR
Pressure/Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -50 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

PV/EBR-E-IIB1
PV/EBR-E-IIB1
Pressure/Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -50 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1

PV/EBR-E-IIB3
PV/EBR-E-IIB3
Pressure/Vacuum Relief Valve

pressure range:

2 up to 210 mbar

vacuum range:

-3.5 up to -50 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB3

SV/E
SV/E
Vacuum Relief Valve

vacuum range:

-2 up to -60 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3,

B / IIB,

B / IIC

UB/DF
UB/DF
Pressure Diaphragm Valve

pressure range:

3.5 up to 140 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

UB/SF
UB/SF
Pressure/Vacuum Diaphragm Valve

pressure range:

3.5 up to 140 mbar

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

UB/SF-G
UB/SF-G
Pressure/Vacuum Diaphragm Valve

pressure range:

3.5 up to 140 mbar

vacuum range:

-3.5 up to -3.5 mbar

Explosion Group:

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

UB/SF-IIA1
UB/SF-IIA1
Pressure/Vacuum Diaphragm Valve

pressure range:

3.5 up to 150 mbar

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

IIA1

UB/VF
UB/VF
Vacuum Diaphragm Valve

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

V/SV-AD-IIB3
V/SV-AD-IIB3
Vacuum Relief Valve

vacuum range:

-2 up to -35 mbar

Explosion Group:

C / IIB3

VD-SV-EB
VD-SV-EB
Pressure/Vacuum Relief Valve

pressure range:

2 up to 60 mbar

vacuum range:

-2 up to -60 mbar

Explosion Group:

IIA1,

D / IIA

VD/SV-AD, VD/SV-ADL
VD/SV-AD, VD/SV-ADL
Pressure/Vacuum Relief Valve

pressure range:

-3.5 up to 35 mbar

vacuum range:

-2 up to -35 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

VD/SV-HR
VD/SV-HR
Pressure/Vacuum Relief Valve

pressure range:

3.5 up to 35 mbar

vacuum range:

-2 up to -35 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

VD/SV-HRL
VD/SV-HRL
Pressure/Vacuum Relief Valve

pressure range:

3.5 up to 35 mbar

vacuum range:

-2 up to -35 mbar

Explosion Group:

IIA1,

D / IIA

VD/TS
VD/TS
Pressure/Vacuum Relief Valve

pressure range:

3.5 up to 50 mbar

vacuum range:

-2 up to -25 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

Diaphragm Valves

PROTEGO® Diaphragm Valves function as pressure vacuum relief valves. The flexible diaphragm allows them to work as a dynamic flame arrester which provides endurance burning protection. For additional safety, these devices are equipped with a static flame arrester unit. 

For extreme cold weather conditions

A specially designed valve seat, combined with the flexible diaphragm, prevents the diaphragm from freezing on the valve seat.

For problematic products

The only vent which works reliably with problem products such as Styrene or Acrylates.

Product filter
5 Results
UB/DF
UB/DF
Pressure Diaphragm Valve

pressure range:

3.5 up to 140 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

UB/SF
UB/SF
Pressure/Vacuum Diaphragm Valve

pressure range:

3.5 up to 140 mbar

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

UB/SF-G
UB/SF-G
Pressure/Vacuum Diaphragm Valve

pressure range:

3.5 up to 140 mbar

vacuum range:

-3.5 up to -3.5 mbar

Explosion Group:

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

UB/SF-IIA1
UB/SF-IIA1
Pressure/Vacuum Diaphragm Valve

pressure range:

3.5 up to 150 mbar

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

IIA1

UB/VF
UB/VF
Vacuum Diaphragm Valve

vacuum range:

-3.5 up to -35 mbar

Explosion Group:

IIA1,

D / IIA,

C / IIB1,

C / IIB2,

C / IIB3

Emergency Relief Valves

PROTEGO® Emergeny relief valves offer reliable protection against overpressure and prevent impermissible product vapor loss close to the set pressure.

Emergency Pressure Relief

Used as a device for emergency pressure relief for storage tanks, containers, silos, and process engineering equipment.

Excellent Tightness

Excellent tightness and hence least possible product losses and reduced environmental pollution.

Product filter
4 Results
ER-V-LP
ER-V-LP
Emergency pressure relief valve

pressure range:

3.4 up to 15 mbar

ER/V
ER/V
Emergency pressure relief valve

pressure range:

5 up to 40 mbar

ER/V-F
ER/V-F
Pressure Relief Valve

pressure range:

60 up to 500 mbar

ER/VH
ER/VH
Pressure Relief Valve

pressure range:

25 up to 60 mbar

Pilot-Operated Valves

PROTEGO® pilot-operated valves provide protection against vacuum and overpressure and prevent the intake of air and unallowable product vapor loss up to the set pressure.

Extreme Tightness

Lowest possible product losses and reduced environmental pollution due to our highly developed manufacturing technology.

Tank pressure is maintained up to the set pressure

The set pressure is close to the opening pressure for optimum pressure maintenance in the system.

Product filter
4 Results
PM-HF
PM-HF
Pressure/Vacuum Relief Valve

pressure range:

10 up to 1034 mbar

vacuum range:

-2.2 up to -7 mbar

PM/(D)S
PM/(D)S
Pressure/Vacuum Relief Valve

pressure range:

10 up to 300 mbar

vacuum range:

-3 up to -7 mbar

VN-A-PCPF
VN-A-PCPF
Pressure/Vacuum Relief Valve,

pressure range:

20 up to 1034 mbar

vacuum range:

2 up to 7 mbar

VN-A-PCPM
VN-A-PCPM
Pressure/Vacuum Relief Valve

pressure range:

20 up to 1034 mbar

vacuum range:

-2 up to -7 mbar

Zero Emissions

PROTEGO® Valves help to reach Net Zero for a Sustainable Future

Due to the highly developed manufacturing technology of PROTEGO® valves the tank pressure is maintained up to set pressure with a tightness that is far superior to the conventional standard. According to the PROTEGO® Standard PS-001 leak rates are measured at 90% of the set pressure. This testing ensures PROTEGO® Valves exceed the most stringent leakage rate requirements of EPA, API2000 and EN ISO 28300.

The extreme tightness of PROTEGO® Valves guarantees Zero Emission at Tank Operating Pressure.

Product losses are minimized and emissions are reduced

To meet the goal of emission reduction, PROTEGO® full lift vents utilize 10% overpressure technology. This technology provides very short opening and closing pressure ranges. The vent only requires 10% overpressure above the set pressure to reach full performance. The tank pressure is maintained up to just below the maximum permissible tank pressure.
PROTEGO® 10% full-lift technology vents are a major benefit to emission reduction and to safe process plant operation.

Emission Saving Potential for a Tank Farm

The graphic shows calculations based on the VDI 3479 guideline demonstrating the vapor saving potential comparing a 100%, 40% and 10% PROTEGO® full lift type technology. 

The PROTEGO® 10% Technology saves emissions and costs. 

Trusted by leaders worldwide

"PROTEGO® Valves have an excellent tightness. The leakage of the valve is much lower than the requirement of local environmental protection bureaus. We are very satisfied with the PROTEGO® products."

one of the world's largest petroleum and petrochemical companies

Interested in Valves?

Contact our specialists for your individual requirements.

Contact us here!