DA-SB-PTFE

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

Features

Low Costs
low operating and lifecycle costs
Temperature Sensors Possible
use of temperature sensors for G 1½ and G 2 is possible
Bi-Directional Flame Transmission
proof design
Modular Design
allows replacement and cleaning of single FLAMEFILTER®
Differnt Series
Aggressive, Sticky, or Polymerizing Products
especially suitable for aggressive, sticky, or polymerizing substances
Use of Patented Shock Wave Guide Tube Effect (SWGTE)
low number of FLAMEFILTER® discs due to the patented Shock Wave Guide Tube Effect (SWGTE)
Function and Description

High-Tech Coating of the Housing

The in-line detonation flame arresters Detonation flame arrester Flame arrester designed to prevent the transmission of a detonation. type PROTEGO® DA-SB-PTFE are the latest generation of flame arresters Flame Arresters A flame arrester, deflagration arrester, or flame trap is a device or form of construction that will allow free passage of a gas or gaseous mixture but will interrupt or prevent the passage of flame. and are distinguished by its unique resistance to adhesive and corrosive media. The use of fluoroplastics as a high-tech housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. coating Coating Coating is the application of a firmly adhering layer of shapeless material to the surface of a workpiece. and as solid material for the flame arrester element is unique throughout the world. The speed of incoming detonations is highly reduced by the effective shock absorber Shock absorber A shock absorber is a device that reduces the kinetic energy of a detonation. (1) and result in an equal pressure distribution across the FLAMEFILTER® surface. This improves the flame extinction in the narrow gaps of the original PTFEFLAMEFILTER® (3).

Main component - PROTEGO® flame arrester

The devices are symmetrical and offer bidirectional flame arresting for deflagrations and stable detonations. The arrester essentially consists of two coated housing parts (4), two coated shock absorbers and the PROTEGO® flame arrester unit PROTEGO® flame arrester unit The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation. (2) in the center. The PROTEGO® flame arrester unit is modular and consists of several FLAMEFILTER® discs and spacers firmly held in a FLAMEFILTER® cage FLAMEFILTER® cage The FLAMEFILTER® cage is a housing for a FLAMEFILTER® set. . The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use.

Dimensions

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

NG150 / 6"150 / 6"200 / 8"300 / 12"
DN50 / 2"80 / 3"80 / 3"100 / 4"
a287 / 11.30287 / 11.30342 / 13.46447 / 17.60
b407 / 15.75407 / 15.75497 / 19.57645 / 25.39
c400 / 15.75400 / 15.75530 / 20.87530 / 20.87

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

NG150 / 6"150 / 6"200 / 8"300 / 12"
DN50 / 2"80 / 3"80 / 3"100 / 4"
Pmax2,4 / 34.81,1 / 15.91,2 / 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

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:

Material for housing

DesignA
HousingSteel with an ECTFE coating
Shock absorberSteel with an ECTFE coating
GasketPTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. A, 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*
Spacer Spacer The spacer is a component that is generally used in a PROTEGO® flame arrester as a spacer within the FLAMEFILTER® se PEEK / ETFE / FEPPEEK / ETFE / FEPPEEK / ETFE / FEP

* electrically conductive

Special materials 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”.

Applications