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DA-E

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

  • eccentric design prevents condensate build-up
  • modular design enables replacement of the individual FLAMEFILTER® discs
  • easy maintenance with fast assembly and disassembly of the FLAMEFILTER®
  • advanced design allows for installation close to ground level
  • bi-directional operation, as well as any flow direction and installation position
  • provides protection against deflagration and stable detonation
  • installation of temperature sensors possible
  • cost-effective spare parts

Función y Descripción

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

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. 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 group, and the composition of the fluid, the optimum detonation arrester can be selected. 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 of up to +60°C / 140°F and an absolute operating pressure 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.

Dimensiones

To select the nominal size (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
Dimensiones en mm / pulgadas * for IIA-P2.0

Selección de materiales para la vivienda

Design BCD
HousingSteelStainless SteelHastelloy
GasketPTFEPTFEPTFE
Flame arrester unitA, CCD
The housing is also available in carbon steel with an ECTFE coating. Special materials upon request

Combinación de materiales para la unidad apagallamas

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

Selección del grupo de explosión

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

Selección de la máxima presión de operación

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

Especificación de la máx. temperatura de operación

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation
higher operating temperatures upon request

Tipo de bridas de conexión

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.
other types upon request

Modelo y especificación

There are three different designs available:

Basic design of the detonation arrester

DA-E- –

In-line detonation flame arrester with integrated temperature sensor* as additional protection against short time burning of one side

DA-E- T

Detonation arrester with two integrated temperature sensors* as additional protection against short time burning from both sides

DA-E- TB

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

Diagrama de flujo volumétrico

Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.