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DR/SBW

In-Line Detonation Flame Arresterfor stable detonations and deflagrations in a straight through design with shock absorber, bidirectional

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Features

Easy Maintenance
Extraordinarily Easy to Service
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
Modular Design
allows replacement and cleaning of single FLAMEFILTER®
Bi-Directional Flame Transmission
proof design
Extended Application Range
for elevated operating temperatures and pressures
Temperature Sensors Possible
use of temperature sensors for G 1½ and G 2 is possible
Spare Parts
cost-effective flame arrester / spare parts
Low Costs
low operating and lifecycle costs
Function and Description

Maintenance-Friendly in-line-detonation flame arrester

In the development of the PROTEGO® DR/SBW in-line Detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997). flame arrester, special effort was made to ease future maintenance Maintenance Combination of all technical and administrative actions, including supervision actions, intended to maintain or restore a unit in working order. of the flame arresters Flame Arresters A flame arrester, deflagration arrester, or flame trap is a device or form of construction that will allow free passage of a gas or gaseous mixture but will interrupt or prevent the passage of flame. . 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. (5) can be removed and cleaned within moments without having to disassemble the piping. The effective shock absorber of 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. and elaborate 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. geometry reduces the number of FLAMEFILTER® discs to a minimum.

Main component - PROTEGO® flame arrester

The device is symmetrical and offers bidirectional flame arresting protecting from stable detonations and deflagrations. The flame arrester consists of a double-jacket housing (1) with two integrated shock absorbers (2) with the PROTEGO® flame arrester unit in the center. The PROTEGO® flame arrester unit consists of several FLAMEFILTER® discs (4) and spacers firmly held in a FLAMEFILTER® cage FLAMEFILTER® cage The FLAMEFILTER® cage is a housing for a FLAMEFILTER® set. (3). The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use. By indicating the operating parameters such as the temperature, pressure and explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group and the composition of the fluid, the optimum in-line detonation flame arrester In-line detonation flame arrester A detonation flame arrester is designed to prevent the transmission of a detonation. can be selected. The PROTEGO® DR/SBW series of flame arresters is available for explosion groups IIA to IIB3 (NFPA group D to C MESG ≥ 0.65 mm).

Many Individual Certifications

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. Type-approved in accordance with the current ATEX Directive and as well as other international standards.
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) and nominal width (NG), please use the flow capacity charts on the following pages

DN50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"350 / 14"400 / 16"
NG150 / 6"150 / 6"200 / 8"300 / 12"500 / 20"500 / 20"600 / 24"700 / 28"800 / 32"
a225 / 8.86225 / 8.86275 / 10.83350 / 13.78550 / 21.65550 / 21.65725 / 28.54800 / 31.50825 / 32.48
b210 / 8.27210 / 8.27220 / 8.66290 / 11.42525 / 20.67525 / 20.67590 / 23.23655 / 25.78725 / 28.54
b1*325 / 12.80325 / 12.80360 / 14.17475 / 18.70835 / 32.87835 / 32.87960 / 37.801075 / 42.321215 / 47.83
c395 / 15.55395 / 15.55410 / 16.14475 / 18.70630 / 24.80630 / 24.80700 / 27.56765 / 30.12835 / 32.87
c1*450 / 17.72450 / 17.72465 / 18.31530 / 20.87730 / 28.74730 / 28.74800 / 31.50865 / 34.06935 / 36.81
d275 / 10.83275 / 10.83325 / 12.80460 / 18.11840 / 33.07840 / 33.071000 / 39.371150 / 45.281250 / 49.21

Dimensions in mm / inches

* b1 dismantling dimension for servicing
c1 dismantling dimension for servicing ( temperature sensor Temperature sensor Temperature sensor for monitoring the temperature. )

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C

Special approvals upon request

Selection of max. operating pressure

DN50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"350 / 14"400 / 16"
NG150 / 6"150 / 6"200 / 8"300 / 12"500 / 20"500 / 20"600 / 24"700 / 28"800 / 32"
Expl. Gr.IIAPmax4 / 584 / 583 / 43.53 / 43.51.6 / 23.21.6 / 23.21.1 / 15.91.1 / 15.91.1 / 15.9
Expl. Gr.IIB3Pmax1.7 / 24.61.7 / 24.61.7 / 24.61.7 / 24.61.2 / 17.41.2 / 17.41.1 / 15.91.1 / 15.91.1 / 15.9

Pmax = Maximum allowable operating pressure in bar / psi absolut, higher operating pressure upon request

Specification of max. operating temperature

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

higher operating temperatures upon request

Flange connection type

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

other connections upon request

Design Types and Specifications

There are four different designs available:
Basic in-line detonation flame arresterDR/SBW- – - –
In-line detonation flame arrester with integrated temperature sensor Integrated temperature sensor Temperature sensor integrated into the flame arrester, as specified by the manufacturer of the flame arrester, in order to provide a signal suitable to activate counter measures. * as additional protection against short time burning Short time burning Stabilized burning for a specific time. of one sideDR/SBW- T - –
In-line detonation flame arrester with two integrated temperature sensors* as additional protection against short time burning from both sidesDR/SBW- TB - –
In-line detonation flame arrester with heating jacketDR/SBW- H -

Additional special flame arresters upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)

Material selection for housing

DesignABC
HousingSteelStainless SteelHastelloy
Heating jacket (DR / SBW-H-(T)-...)SteelStainless SteelStainless Steel
Cover with shock absorberSteelStainless SteelHastelloy
GasketFPM*PTFEPTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. AC, DE

* for devices exposed to elevated temperatures above 150°C / 302 °F (T150), gaskets made of PTFE. Special device with unidirectional shock absorber DR/SW-... from DN 50 resp. NG 150 available.

Special materials upon request

Material combinations of flame arrester unit

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

* the FLAMEFILTER® are also available in the materials 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