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DR/ES, DN 1/4 - 3/4

In-Line Detonation Flame Arresterfor stable detonations and deflagrations in right angle design, unidirectional

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Features

Eccentric Design
eases installation close to floors and walls
Reduced Number of FLAMEFILTER® Discs
low number of FLAMEFILTER® discs due to shock absorber Shock absorber A shock absorber is a device that reduces the kinetic energy of a detonation. technology
Fastest Disassembly and Assembly
of single FLAMEFILTER®
Explosion Safety
Provides protection against deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). and stable detonation Stable detonation A detonation is stable when it progresses through a confined system without significant variation of velocity and pressure characteristics.
Angle Bodied
saves pipe elbows
State of the Art Protection
for any hydrogen/air mixture
Spare Parts
cost-effective flame arrester / spare parts
Low Costs
low operating and lifecycle costs
Function and Description

Protects against deflagrations and stable detonations

The PROTEGO® DR/ES series in-line detonation flame arrester In-line detonation flame arrester A detonation flame arrester is designed to prevent the transmission of a detonation. with connection size up to ¾“ is ideal for installation in small pipes and to protect equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. such as gas analyzers. The device Device A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. protects against deflagrations and stable detonations. It can be installed anywhere in the pipe no matter what the distance is from the potential ignition source Ignition source Any source with enough energy to initiate combustion. . The small and compact flame arrester has a right angle design.

Main component - PROTEGO® flame arrester

Once a detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997). enters the flame arrester, energy is absorbed from the detonation shock wave by diversion mainly through the shock absorber (1) before the flame is extinguished in the narrow gaps of the FLAMEFILTER® (3). The PROTEGO® flame arrester unit PROTEGO® flame arrester unit The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation. (2) consists of several FLAMEFILTER® discs and spacers (for explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group IIC - NEC group B) whose gap size and number is determined by the operating parameters of the processed fluid (explosion group, pressure, temperature). This device is available for explosion groups IIB3 and IIC (NEC group C MESG ≥ 0.65 mm and B).

Many Individual Certifications

This in-line detonation flame arrester functions unidirectional and is equipped with a threaded connection. The thread can be adapted to international standards. The standard design is approved at an operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. up to +60°C / 140°F and an absolute operating pressure Operating pressure Operating pressure is the pressure existing at normal operating conditions within the system being protected. acc. to table 3. Devices with special approvals can be obtained for higher pressures and higher temperatures upon request. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Product Includes equipment, protective systems, devices, components and combinations of these. Data and Features

Dimensions

To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), please use the flow capacity charts on the following pages

DNG ¼"G ½"G ¾"
a48 / 1.8970 / 2.7680 / 3.15
b35 / 1.3840 / 1.5747 / 1.85
c70 / 2.7675 / 2.9587 / 3.43
d108 / 4.25115 / 4.53135 / 5.31
e34 / 1.3450 / 1.9760 / 2.36

Dimensions in mm / inches

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
≥ 0,65 mmIIB3C
< 0,50 mmIICB

Special approvals upon request

Selection of max. operating pressure

Expl. Gr.DNG ¼"G ½"G ¾"
IIB3Pmax1,2 / 17.41,2 / 17.41,2 / 17.4
IICPmax1,1 / 15.91,1 / 15.91,1 / 15.9

Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request,
Expl. Gr. IIB3 covers Expl. Gr. IIA

Specification of max. operating temperature

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation

higher operating temperatures upon request

Type of connection

Pipe thread DIN ISO 228-1DIN

other types of thread upon request

Material selection for housing

DesignBCD
Housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. SteelStainless SteelHastelloy
Cover with shock absorber*SteelStainless SteelHastelloy
GasketPTFEPTFEPTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. AAB

G ¼" only comes in design C and D
* G ¼" without shock absorber

Special materials upon request

Material combinations of flame arrester unit

DesignAB
FLAMEFILTER®*Stainless SteelHastelloy
Spacer Spacer The spacer is a component that is generally used in a PROTEGO® flame arrester as a spacer within the FLAMEFILTER® se Stainless SteelHastelloy

* the FLAMEFILTER® are also available in the materi- als Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are used.

Special materials upon request

Flow Capacity Chart

The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.

Applications

Floating-Roof Storage Tanks

Processing Facilities

Vapor Combustion Systems

Contact CSR Department 

If you have any questions, feedback, or additional input, our team of experts will be glad to support you.

Picture of Mrs. Auris-Nadine Hillen
Mrs. Auris-Nadine Hillen

CSR Department

+49 (0)5307 809 108