DA-CG

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

Features

Explosion Safety

provides protection against , and unstable detonations

Reduced Number of FLAMEFILTER® Discs

low number of FLAMEFILTER® discs due to technology

Modular Design

allows replacement and cleaning of single FLAMEFILTER®

Differnt Series

allow increase of FLAMEFILTER® size for given flange connection resulting in lower pressure drop across the

Easy Maintenance

without disassembling of the FLAMEFILTER®

Large Sizes

available in large nominal widths

Extended Application Range

for elevated operating temperatures and pressures

Bi-Directional Flame Transmission

proof design

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

Requirements of the US Coast Guard

The PROTEGO® DA-CG series of was mainly developed for the North American market and optimized to meet the demands of the US Coast Guard. The devices are symmetrical and offer bi-directional flame arresting for deflagrations and stable and unstable detonations.

Main component - PROTEGO® Flame Arrester

The effective shock absorber (1) greatly reduces the speed of incoming detonations. This leads to improved flame extinguishing in the narrow gaps of the FLAMEFILTER® (3). The flame arrester essentially consists of two parts with an integrated shock absorber and the (2) in the center. The PROTEGO® flame arrester unit is modular and consists of several FLAMEFILTER® discs and spacers firmly held in a . The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s intended use.

For Explosion groups IIA to IIB3

By specifying the operating conditions, such as the temperature, pressure, group, and the composition of the fluid, the optimum can be selected. Type PROTEGO® DA-CG are available for explosion groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).

Many Individual Certifications

The standard design can be used at an of up to +60°C / 140°F and an absolute acc. to table 3. Devices with special approvals for higher pressures and higher temperatures are available upon request. The flame arresters have been approved in accordance with the American Standard 33 CFR part 154 and are accepted by the US Coast Guard.

Data and Features

Dimensiones

To select nominal width/ 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. (NG/DN) - combination, please use the flow capacity charts on the following pages. Additional nominal width/nominal size (NG/DN) - combinations for improved flow capacity upon request.

NG	150 / 6"	150 / 6"	200 / 8"	300 / 12"	400 / 16"	500 / 20"	600 / 24	700 / 28"	800 / 32"	1000 / 40"	1200 / 48"
DN	≤ 50 / 2"	65, 80 / 2 ½“, 3	≤ 100 / 4"	≤ 150 / 6"	≤ 200 / 8"	≤ 250 / 10"	≤ 300 / 12"	≤ 350 / 14"	≤ 400 / 16"	≤ 500 / 20"	≤ 600 / 24"
a	285 / 11.22	285 / 11.22	340 / 13.39	460 / 18.11	580 / 22.83	715 / 28.15	840 / 33.07	1025 / 40.35	1025 / 40.35	1255 / 49.41	1485 / 58.46
b	650 / 25.59	650 / 25.59	700 / 27.56	800 / 31.50	900 / 35.43	1100 / 43.31	1250 / 49.21	1500 / 59.06	1500 / 59.06	1700 / 66.93	2000 / 78.74
c	300 / 11.81	300 / 11.81	330 / 12.99	380 / 14.96	490 / 19.29	540 / 21.26	590 / 23.23	690 / 27.17	690 / 27.17	790 / 31.10	880 / 34.65

Dimensiones en mm / pulgadas

Selección del grupo de explosión

MESG	Expl. Gr. (IEC / CEN)	Gas Group (NEC)
> 0,90 mm	IIA	D
≥ 0,65 mm	IIB3	C

Special approvals upon request

Selección de la máxima presión de operación

Expl. Gr.

50 / 2"

80 / 3"

100 / 4"

150 / 6"

200 / 8"

250 / 10"

300 / 12"

350 / 14"

400 / 16"

500 / 20"

600 / 24"

150 / 6''

200 / 8''

300 / 12''

400 / 16''

500 / 20''

600 / 24''

700 / 28''

800 / 32''

1000 / 40''

1200 / 48''

IIA (D)

Pmax

1,2 / 17.4

IIB3 (C)

Pmax

1,6 / 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°F	Tmaximum 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 connections upon request

Modelo y especificación

There are three different designs available:

Basic design of the detonation arresterDA-CG- –

In-line detonation flame arrester with * as additional protection against of one sideDA-CG- T

arrester with two integrated temperature sensors* as additional protection against short time burning from both sidesDA-CG- TB

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

Selección de materiales para la vivienda

Design	A	B
Housing	Steel	Stainless Steel
Gasket	PTFE	PTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set.	A	B

Special materials upon request

Combinación de materiales para la unidad apagallamas

Design	A	B
FLAMEFILTER^® cage	Steel	Stainless Steel
FLAMEFILTER^®*	Stainless Steel	Stainless Steel
Spacer Spacer The spacer is a component that is generally used in a PROTEGO® flame arrester as a spacer within the FLAMEFILTER® se	Stainless Steel	Stainless Steel

*the FLAMEFILTER^® are also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are used.