DA-CG

Name: DA-CG
Brand: PROTEGO
SKU: product32881013267692

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

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Features

Explosion Safety

Provides Protection Against Deflagration, Stable Detonation and Unstable Detonations

Reduced Number of FLAMEFILTER® Discs

Low Number of FLAMEFILTER® Discs Due to Shock Absorber 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 Device

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 Spare Parts

Low Costs

Low Operating and Lifecycle Costs

Function and Description

Requirements of the US Coast Guard

The PROTEGO® DA-CG series of detonation arresters 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 Unit

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 housing parts with an integrated shock absorber and the PROTEGO® Flame Arrester Unit (2) in the center. The PROTEGO® Flame Arrester Unit is modular and consists of several FLAMEFILTER® discs and spacers firmly held in a FLAMEFILTER® casing. 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, explosion group, and the composition of the fluid, the optimum In-Line Detonation Detonation Explosion, die sich mit Überschallgeschwindigkeit fortpflanzt, gekennzeichnet durch eine Stoßwelle. Flame Arrester can be selected. Type PROTEGO® DA-CG Flame Arresters 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 operating temperature of up to +60°C / 140°F and an absolute operating pressure 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.

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Product Data

Dimensions

To select nominal width/nominal size (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

Dimensions in mm / inches

Material selection for housing

Design	A	B
Housing	Steel	Stainless Steel
Gasket	PTFE	PTFE
Flame arrester unit	A	B

Special materials upon request

Material combinations of flame arrester unit

Design	A	B
FLAMEFILTER^® cage	Steel	Stainless Steel
FLAMEFILTER^®*	Stainless Steel	Stainless Steel
Spacer	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.

Special materials upon request

Selection of explosion group

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

Special approvals upon request

Selection of max. operating pressure

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

Specification of max. operating temperature

≤ 60°C / 140°F	Tmaximum 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 connections upon request

Design Types and Specifications

There are three different designs available:

Basic design of the detonation arresterDA-CG- –

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

Detonation 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)

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”.