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PROTEGO
Excellence in Safety and Environment

DA-E

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

Features

Eccentric Design
prevents condensate build up
Modular Design
allows replacement and cleaning of single FLAMEFILTER®
Fastest Disassembly and Assembly
of single FLAMEFILTER®
Eccentric Design
eases installation close to floors and walls
Bi-Directional Flame Transmission
proof design
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.
Temperature Sensors Possible
use of temperature sensors for G 1½ and G 2 is possible
Spare Parts
cost-effective flame arrester / spare parts
Function and Description

Excentric Design

The PROTEGO® DA-E series of detonation arresters Detonation flame arrester Flame arrester designed to prevent the transmission of a detonation. are distinguished by its eccentric 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. shape. When condensate accumulates within 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. , the design allows the liquid to drain without collecting large amounts in the housing. The eccentric design 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. has distinctive advantages over the classic 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. when installed at lower depths.

Main component - PROTEGO® flame arrester

The detonation arrester is symmetrical and offers bi-directional flame arresting. The arrester essentially consists of two housing parts (1) and the PROTEGO® flame arrester unit (2) in the center. The PROTEGO® flame arrester unit consists of several FLAMEFILTER® discs (3) and spacers firmly held in a FLAMEFILTER® casing FLAMEFILTER® casing Enclosure for FLAMEFILTER® including insert rings. . The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s intended use. By specifying the operating conditions, such as the temperature, pressure, 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 detonation arrester can be selected.

For Explosion groups IIA to IIB3

The PROTEGO® DA-E series of flame arresters are available for explosion groups IIA to IIB3 (NEC Group D to C MESG ≥ 0.65 mm). The standard design can be used with an operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. of 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 approval for higher pressures and higher temperatures are available upon request. Type-approved in accordance with the current ATEX Directive and EN ISO 16852, 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), please use the flow capacity charts on the following pages

DN25 / 1"32 / 1¼“40 / 1½“50 / 2"65 / 2½“80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
Expl. Gr.IIAa304 / 315*304 / 315*320 / 12.60325 / 12.80370 / 14.57375 / 10.83380 / 14.96481 / 18.94487 / 19.17510 / 20.08540 / 21.26560 / 22.05
IIB3a304 / 11.97304 / 11.97357 / 14.06361 / 14.21408 / 16.06412 / 16.22428 / 16.85493 / 19.41499 / 19.65522 / 20.55552 / 21.73572 / 22.52
b29 / 1.1429 / 1.1429 / 1.1429 / 1.1438 / 1.4938 / 1.4939 / 1.5365 / 2.5665 / 2.5655 / 2.1758 / 2.2860 / 2.36
c185 / 7.28185 / 7.28210 / 8.27210 / 8.27250 / 9.84250 / 9.84275 / 10.83385 / 15.16385 / 15.16450 / 17.72500 / 19.69575 / 22.64
d400 / 15.75400 / 15.75410 / 16.14410 / 16.14440 / 17.32440 / 17.32460 / 18.11520 / 20.47520 / 20.47540 / 21.26570 / 22.44600 / 23.62

Dimensions in mm / inches

* for IIA-P2.0

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

Expl. Gr.DN25 / 1"32 / 1¼"40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
IIAPmax2,0 / 29.02,0 / 29.01,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.4
IIB 3Pmax1,1 / 15.91,1 / 15.91,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.4

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 types upon request

Design Types and Specifications

There are three different designs available:
Basic design of the detonation arresterDA-E- –
In-line detonation flame arrester In-line detonation flame arrester A detonation flame arrester is designed to prevent the transmission of a detonation. 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 sideDA-E- T
Detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997). arrester with two integrated temperature sensors* as additional protection against short time burning from both sidesDA-E- TB

Additional special arresters upon request
*Resistance thermometer (Ex i II 1/2 G Ex ia IIC T1…T6 Ga/Gb)

Material selection for housing

Design BCD
HousingSteelStainless SteelHastelloy
GasketPTFEPTFEPTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. A, CCD

The housing is also available in carbon steel with an ECTFE coating Coating Coating is the application of a firmly adhering layer of shapeless material to the surface of a workpiece. .

Special materials upon request

Material combinations of flame arrester unit

Design ACD
FLAMEFILTER® cageSteelStainless SteelHastelloy
FLAMEFILTER®*Stainless SteelStainless 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 SteelStainless SteelHastelloy

* 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