DA-G
In-Line Detonation Flame Arrester for stable detonations and deflagrations in a straight through design, bidirectional
- bi-directional
- modular design
- quick removal and installation of the individual FLAMEFILTER®
- easy maintenance and replacement of the individual FLAMEFILTER®
- various uses possible
- installation of temperature sensors for G 1½ and G 2 possible
- cost-effective spare parts
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 analysis 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 with an operating temperature of up to +60°C / 140°F and an absolute operating pressure up to 1.1 bar / 15.9 psi. Devices with special approvals for higher pressures (see table 4) and higher temperatures are available upon request.
The device is bi-directional and equipped with a threaded connection. This can be adapted to international standards. The detonation arrester can be used at any location in the pipe, regardless of 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.
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" |
| a | 80 / 3.15 | 80 / 3.15 | 100 / 3.94 | 100 / 3.94 | 155 / 6.10 | 155 / 6.10 |
| b | 55 / 2.17 | 55 / 2.17 | 76 / 2.99 | 76 / 2.99 | 124 / 4.88 | 124 / 4.88 |
| c (IIA) | 112 / 4.41 | 112 / 4.41 | 122 / 4.80 | 122 / 4.80 | 205 / 8.07 | 205 / 8.07 |
| c (IIB3 and IIC) | 135 / 5.31 | 135 / 5.31 | 145 / 5.71 | 145 / 5.71 | 205 / 8.07 | 205 / 8.07 |
| d | — | — | — | — | 400 / 15.75 | 400 / 15.75 |
| SW | 32 / 1.26 | 32 / 1.26 | 50 / 1.97 | 50 / 1.97 | 75 / 2.95 | 75 / 2.95 |
Selección de materiales para la vivienda
| Design | B | C |
| Housing | Stainless Steel | Hastelloy |
| Gasket | PTFE | PTFE |
| FLAMEFILTER®* | Stainless Steel | Hastelloy |
Selección del grupo de explosión
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
| < 0,50 mm | IIC | B |
Selección de la máxima presión de operación
| Expl. Gr. | DN | G ½" | G ¾" | G 1" | G 1¼" | G 1½" | G 2'' |
| IIA | Pmax | 1,2 / 17.4 | 1,2 / 17.4 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 |
| IIB3 | Pmax | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,4 / 20.3 | 1,4 / 20.3 |
| IIC | Pmax | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,6 / 23.2 | 1,6 / 23.2 |
Especificación de la máx. temperatura de operación
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
Tipo de conexión
| Pipe thread DIN ISO 228-1 | DIN |
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 |
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
Flange connection available upon request
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”.
