Protego BR
PROTEGO®
Excellence in Safety and Environment

DA-E

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

Features

Eccentric Design
Prevents Condensate Build Up
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Fastest Disassembly and Assembly
of Single FLAMEFILTER®
Compact Design
Eases Installation Close to Floors and Walls
Bi-Directional Flame Transmission
Proof Design
Explosion Safety
Provides Protection Against Deflagration and Stable Detonation
Temperature Sensors Possible
Use of Temperature Sensors for G 1½ and G 2 Is Possible
Spare Parts
Cost-Effective Spare Parts
Function and Description

Eccentric Design

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.

Main Component – PROTEGO® Flame Arrester Unit

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.

For Explosion Groups IIA to IIB3

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.
Product Data

Dimensions

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

Dimensions in mm / inches

* for IIA-P2.0

Selection of explosion group

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

Special approvals upon request

Selection of max. operating pressure

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

Specification of max. operating temperature

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

higher operating temperatures upon request

Material selection for housing

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

Material combinations of flame arrester unit

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

Flange connection type

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

other types upon request

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”.