DA-G

DA-G

In-Line Detonation Flame Arrester

for stable detonations and deflagrations in a straight through design, bidirectional

Función y Descripción

The PROTEGO® DA-G series is a compact in-line detonation flame arrester for installation in pipes with diameters up to 2“, and is used, for example, in industrial applications such as gas analyzing lines.

Once a detonation enters the flame arrester, energy is absorbed from the shock wave, and the flame is extinguished in the narrow gaps of the FLAMEFILTER® (1).

The PROTEGO® flame arrester unit consists of several FLAMEFILTER ® discs firmly held in a housing. The gap size and number of FLAMEFILTER® discs are determined by the operating data and parameters of the mixture flowing in the line (explosion group, pressure, temperature).

To provide an optimum result between the housing size, number of FLAMEFILTER® discs and their gap size, a device was developed that can be used for all explosion groups, IIA, IIB3 and IIC (NEC Group D, C MESG ≥ 0.65 mm and B). The standard design can be used up to an operating temperature of +60°C / 140°F and an absolute operating pressure up to 1.1 bar / 15.9 psi. Devices with special approvals can be obtained for higher pressures (see table 4) and higher temperatures upon request.

The device is bidirectional and equipped with a threaded connection. The thread can be executed to international standards. The detonation arrester can be used at any location in the pipe, independently from the location of the ignition source.

Type-approved in accordance with the current ATEX Directive and EN ISO 16852 as well as other international standards.

Características especiales y ventajas

  • bidirectional
  • modular design
  • the individual FLAMEFILTER® discs can be quickly removed and installed
  • the individual FLAMEFILTER® discs are easy to service and replace
  • different application possibilities
  • possible installation of temperature sensors
  • cost efficient spare parts

Dimensiones

To select the nominal size (DN), please use the flow capacity charts on the following pages

DN G ½"G ¾"G 1"G 1¼"G 1½"G 2"
a80 / 3.1580 / 3.15100 / 3.94100 / 3.94155 / 6.10155 / 6.10
b55 / 2.1755 / 2.1776 / 2.9976 / 2.99124 / 4.88124 / 4.88
c (IIA)112 / 4.41112 / 4.41122 / 4.80122 / 4.80205 / 8.07205 / 8.07
c (IIB3 and IIC)135 / 5.31135 / 5.31145 / 5.71145 / 5.71205 / 8.07205 / 8.07
d400 / 15.75400 / 15.75
SW32 / 1.2632 / 1.2650 / 1.9750 / 1.9775 / 2.9575 / 2.95
DN G ½"G ¾"G 1"G 1¼"G 1½"G 2"
a80 / 3.1580 / 3.15100 / 3.94100 / 3.94155 / 6.10155 / 6.10
b55 / 2.1755 / 2.1776 / 2.9976 / 2.99124 / 4.88124 / 4.88
c (IIA)112 / 4.41112 / 4.41122 / 4.80122 / 4.80205 / 8.07205 / 8.07
c (IIB3 and IIC)135 / 5.31135 / 5.31145 / 5.71145 / 5.71205 / 8.07205 / 8.07
d400 / 15.75400 / 15.75
SW32 / 1.2632 / 1.2650 / 1.9750 / 1.9775 / 2.9575 / 2.95

Dimensions in mm / inches, SW= width across flats

DA-G

Selección de materiales para la vivienda

DesignBC
HousingStainless SteelHastelloy
GasketPTFEPTFE
FLAMEFILTER®*Stainless SteelHastelloy
DesignBC
HousingStainless SteelHastelloy
GasketPTFEPTFE
FLAMEFILTER®*Stainless 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

DA-G

Selección del grupo de explosión

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
< 0,50 mmIICB
MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
< 0,50 mmIICB

Special approvals upon request

Selección de la máxima presión de operación

Expl. Gr.DNG ½"
G ¾"
G 1"G 1¼"G 1½"G 2''
IIAPmax1,2 / 17.41,2 / 17.41,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9
IIB3Pmax 1,1 / 15.9 1,1 / 15.9 1,1 / 15.9 1,1 / 15.9 1,4 / 20.3 1,4 / 20.3
IICPmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,6 / 23.21,6 / 23.2
Expl. Gr.DNG ½"
G ¾"
G 1"G 1¼"G 1½"G 2''
IIAPmax1,2 / 17.41,2 / 17.41,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9
IIB3Pmax 1,1 / 15.9 1,1 / 15.9 1,1 / 15.9 1,1 / 15.9 1,4 / 20.3 1,4 / 20.3
IICPmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,6 / 23.21,6 / 23.2

Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request

Especificación de la máx. temperatura de operación

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

higher operating temperatures upon request

Tipo de conexión

Pipe thread DIN ISO 228-1DIN
Pipe thread DIN ISO 228-1DIN

other types of thread upon request

Modelo y especificación

There are three different designs available:

Basic design of the DA-G in-line detonation flame arrester, size ½“ to 2“

DA-G- –

In-line detonation flame arrester with integrated temperature sensor* as additional protection against short burning from one side, size 1½“ to 2“

DA-G- T

In-line detonation flame arrester with two integrated temperature sensors* as additional protection against short time burning from both sides, size 1½“ to 2“

DA-G- TB

Basic design of the DA-G in-line detonation flame arrester, size ½“ to 2“

DA-G- –

In-line detonation flame arrester with integrated temperature sensor* as additional protection against short burning from one side, size 1½“ to 2“

DA-G- T

In-line detonation flame arrester with two integrated temperature sensors* as additional protection against short time burning from both sides, size 1½“ to 2“

DA-G- TB

*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
Flange connection available upon request

DA-G

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”.

DA-G
DA-G