FA-I-PTFE

FA-I-PTFE

In-Line Deflagration Flame Arrester concentric design, bidirectional

Function and Description

The in-line deflagration flame arresters type PROTEGO® FA-I-PTFE are the latest generation of flame arresters and are distinguished by their unique resistance to adhesive and corrosive media. The use of fluoroplastics as a high-tech housing coating and as solid material for the flame arrester element is unique throughout the world.

When installing the deflagration flame arrester make sure that the distance between potential ignition sources and the Location of the installed device, the L/D ratio (pipe length/pipe diameter), does not exceed the value of 50.

The deflagration flame arrester is symmetrical and offers bidirectional flame transmission protection. The arrester essentially consists of two coated housing parts (1) and the PROTEGO® flame arrester unit (2) in the center. The PROTEGO® flame arrester unit is modular and consists of several FLAMEFILTER® discs (3) and spacers firmly held in a FLAMEFILTER® cage. The number of PTFE-FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use.

The deflagration flame arrester PROTEGO® FA-I-PTFE can be used for explosion group IIA (NFPA group D). The Standard design is approved at an operating temperature up to +60°C / 140°F. The maximum allowable operating pressure depends on nominal diameter (DN) and nominal size (NG) and amounts to a maximum of 1.6 bar / 23.2 psi absolute (for DN 100 / 4” and DN150 / 6” see 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
  • application especially for corrosive and polymerizing media
  • minimum number of FLAMEFILTER® discs due to patented design
  • service-friendly design
  • the modular design enables each individual FLAMEFILTER® to be replaced
  • bidirectional operation as well as any direction of flow
  • installation of temperature sensors is possible
  • less soiling of the device lowers service, operating and life-cycle costs
  • minimum pressure loss and associated low operating and life-cycle costs

Dimensions

To select series and nominal size (DN) - nominal width (NG) combination, please use the flow capacity chart on the following page

DN50 / 2"80 / 3"100 / 4"150 / 6"
NG150 / 6"150 / 6"200 / 8"300 / 12"
a287 / 11.30287 / 11.30342 / 13.46447 / 17.60
b380 / 14.96380 / 14.96468 / 18.43612 / 24.09
c430 / 16.93430 / 16.93480 / 18.90530 / 20.87
DN50 / 2"80 / 3"100 / 4"150 / 6"
NG150 / 6"150 / 6"200 / 8"300 / 12"
a287 / 11.30287 / 11.30342 / 13.46447 / 17.60
b380 / 14.96380 / 14.96468 / 18.43612 / 24.09
c430 / 16.93430 / 16.93480 / 18.90530 / 20.87

Dimensions in mm / inches

FA-I-PTFE

Material for housing

Design A
HousingSteel with an ECTFE coating
GasketPTFE
Flame arrester unitA, B, C
Design A
HousingSteel with an ECTFE coating
GasketPTFE
Flame arrester unitA, B, C

Special materials upon request

Material combinations of flame arrester unit

DesignABC
FLAMEFILTER® cageSteel with an ECTFE coatingHastelloyStainless Steel
Spider ringsSteel with an ECTFE coatingHastelloyStainless Steel
FLAMEFILTER®*PTFE*PTFE*PTFE*
SpacerPEEK / ETFE / FEPPEEK / ETFE / FEPPEEK / ETFE / FEP
DesignABC
FLAMEFILTER® cageSteel with an ECTFE coatingHastelloyStainless Steel
Spider ringsSteel with an ECTFE coatingHastelloyStainless Steel
FLAMEFILTER®*PTFE*PTFE*PTFE*
SpacerPEEK / ETFE / FEPPEEK / ETFE / FEPPEEK / ETFE / FEP

* electrically conductiveSpecial materials upon request.

FA-I-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

DN50 / 2"80 / 3"100 / 4"150 / 6"
NG150 / 6"150 / 6"200 / 8"300 / 12"
Pmax1.6 / 23.21.6 / 23.31.2 / 17.41.2 / 17.4
DN50 / 2"80 / 3"100 / 4"150 / 6"
NG150 / 6"150 / 6"200 / 8"300 / 12"
Pmax1.6 / 23.21.6 / 23.31.2 / 17.41.2 / 17.4

Pmax = 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 three different designs:
Basic in-line deflagration flame arrester

FA-I - PTFE –

In-line deflagration flame arrester with integrated temperature sensor* as additional protection against short-time burning from one side

FA-I - PTFE - T

In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sides

FA-I - PTFE - TB

Basic in-line deflagration flame arrester

FA-I - PTFE –

In-line deflagration flame arrester with integrated temperature sensor* as additional protection against short-time burning from one side

FA-I - PTFE - T

In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sides

FA-I - PTFE - TB

Additional special devices available upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
FA-I-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”.

FA-I-PTFE
FA-I-PTFE