Protego BR
PROTEGO®
Excellence in Safety and Environment

DR/ES-PTFE

In-Line Detonation Flame Arrester for stable detonations and deflagrations in right angle design with shock absorber, unidirectional

Features

Reduced Number of FLAMEFILTER® Discs
Low Number of FLAMEFILTER® Discs Due to Shock Absorber Technology
Fastest Disassembly and Assembly
of Single FLAMEFILTER®
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Explosion Safety
Provides Protection Against Deflagration and Stable Detonation
Angle Bodied
Saves Pipe Elbows
Low Costs
Low Operating and Lifecycle Costs
Function and Description

High-Tech Coating of the Housing

The PROTEGO® DR/ES-PTFE Series In-Line Detonation Flame Arresteris distinguished by its unique resistance to adhesive and corrosive media. The use of fluoroplastics as a high-tech housing coating and as safety flame arrester element is unique throughout the world. The device represents a further development of PROTEGO® Flame Arresters DR/ES in a right angle design that have been used and proven for decades in industry. The device protects against deflagrations and stable detonations.

Main Component – PROTEGO® Flame Arrester Unit (PTFE)

Once a detonation enters the Flame Arrester, energy is absorbed from the detonation shock wave by the integrated shock absorber (1) before the flame is extinguished in the narrow channel of the PTFE FLAMEFILTER® (3). The PROTEGO® Flame Arrester Unit (2) consists of several FLAMEFILTER® discs and spacers firmly held in the FLAMEFILTER® cage (4). The gap size and number of FLAMEFILTER® discs are determined by the operating data parameters of the mixture flowing in the line (pressure, temperature).

For Explosion Group IIA

The detonation arrester can be used for explosion group IIA (NEC group D). The standard design is approved at an operating temperature up to +60°C / 140°F and an absolute operating pressure acc. to table 3. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data

Dimensions

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

DN40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"
a153 / 6.02155 / 6.10198 / 7.80200 / 7.87250 / 9.84332 / 13.07335 / 13.19
b183 / 7.20185 / 7.28223 / 8.78225 / 8.86290 / 11.42357 / 14.06360 / 14.17
c335 / 13.19335 / 13.19420 / 16.53420 / 16.53490 / 19.29590 / 23.23590 / 23.23
c1455 / 17.91455 / 17.91585 / 23.03585 / 23.03680 / 26.77835 / 32.87835 / 32.87
d210 / 8.27210 / 8.27275 / 10.83275 / 10.83325 / 12.80460 / 18.11460 / 18.11
e685 / 26.97685 / 26.97770 / 30.31770 / 30.31840 / 33.07940 / 37.01940 / 37.01

Dimensions in mm / inches

Selection of explosion group

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

Special approvals upon request

Selection of max. operating pressure

DN40 / 1 ½"50 / 2"65 / 2 ½"80 / 3"100 / 4"125 / 5"150 / 6"
Expl. Gr.IIAPmax1.1 / 15.91.1 / 15.91.2 / 17.41.2 / 17.41.1 / 15.91.1 / 15.91.1 / 15.9

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 A
HousingSteel with an ECTFE coating
Cover with shock absorberSteel with an ECTFE coating
GasketPTFE
Flame arrester unitA, B, C

Special materials upon request

Material combinations of flame arrester unit

Design ABC
FLAMEFILTER® cagePTFE*HastelloyStainless Steel
FLAMEFILTER®*PTFE*PTFE*PTFE*
SpacerPEEK / ETFE / FEPPEEK / ETFE / FEPPEEK / ETFE / FEP

*electrically conductive

Flange connection type

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

other connections 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”.