DR/ES-PTFE

DR/ES-PTFE

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

Function and Description

The PROTEGO® DR/ES-PTFE series in-line detonation flame arrester is distinguished by ist 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.

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). 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.

Type-approved in accordance with the current ATEX Directive and EN ISO 16852 as well as other international standards.

Features and Advantages

  • build up of adhesive materials is prevented by the smooth surfaces
  • minimum number of FLAMEFILTER® discs due to the effective shock absorber
  • quick removal and installation of the complete PROTEGO® flame arrester unit and the individual FLAMEFILTER® discs in the cage
  • the modular design enables each individual FLAMEFILTER® discs to be replaced
  • offers protection against deflagrations and stable detonations
  • the right angle design saves pipe elbows
  • ideal for corrosive media
  • less soiling of the device lowers service, operating and life-cycle cost

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
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

DR/ES-PTFE

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

*electrically conductive

DR/ES-PTFE

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
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
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
≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation

higher operating temperatures upon request

Flange connection type

EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF
EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF

other connections upon request

Design Types and Specifications

There are two different designs available:
Basic in-line detonation flame arrester

DR/ES - PTFE –

In-line detonation flame arrester with integrated temperature sensor* as additional protection against short time burning

DR/ES - PTFE - T

Basic in-line detonation flame arrester

DR/ES - PTFE –

In-line detonation flame arrester with integrated temperature sensor* as additional protection against short time burning

DR/ES - PTFE - T

*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
DR/ES-PTFE

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). Conversion to other densities and temperatures refer to Vol. 1: “Technical Fundamentals”.

DR/ES-PTFE
DR/ES-PTFE