DA-SB-PTFE

Name: DA-SB-PTFE
Brand: PROTEGO
SKU: product328839962463

In-Line Detonation Flame Arrester for 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

Allow Increase of FLAMEFILTER® Size for Given Flange Connection Resulting in Lower Pressure Drop Across the Device

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 Type PROTEGO® DA-SB-PTFE are the latest generation of Flame Arresters and are distinguished by its 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. The speed of incoming detonations is highly reduced by the effective shock absorber (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 Unit

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 (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. The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use.

For Explosion Group IIA

The Detonation Arrester PROTEGO® DA-SB-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 2.4 bar / 34.8 psi absolute (for DN50 / 2” see 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 nominal width/nominal size (NG/DN) - combination, please use the flow capacity chart on the following pages

NG	150 / 6"	150 / 6"	200 / 8"	300 / 12"
DN	50 / 2"	80 / 3"	80 / 3"	100 / 4"
a	287 / 11.30	287 / 11.30	342 / 13.46	447 / 17.60
b	407 / 15.75	407 / 15.75	497 / 19.57	645 / 25.39
c	400 / 15.75	400 / 15.75	530 / 20.87	530 / 20.87

Dimensions in mm / inches

Selection of explosion group

MESG	Expl. Gr. (IEC / CEN)	Gas Group (NEC)
> 0,90 mm	IIA	D

Special approvals upon request

Selection of max. operating pressure

NG	150 / 6"	150 / 6"	200 / 8"	300 / 12"
DN	50 / 2"	80 / 3"	80 / 3"	100 / 4"
Pmax	2,4 / 34.8	1,1 / 15.9	1,2 / 17.4	1,2 / 17.4

Pmax = Maximum allowable operating pressure in bar / psi absolut, higher operating pressure upon request

Specification of max. operating temperature

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

higher operating temperatures upon request

Material for housing

Design	A
Housing	Steel with an ECTFE coating
Shock absorber	Steel with an ECTFE coating
Gasket	PTFE
Flame arrester unit	A, B, C

Special materials upon request

Material combinations of flame arrester unit

Design	A	B	C
FLAMEFILTER^® cage	Steel with an ECTFE coating	Hastelloy	Stainless Steel
Spider rings	Steel with an ECTFE coating	Hastelloy	Stainless Steel
FLAMEFILTER^®*	PTFE*	PTFE*	PTFE*
Spacer	PEEK / ETFE / FEP	PEEK / ETFE / FEP	PEEK / ETFE / FEP

* electrically conductive

Special materials upon request

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”.

DA-SB-PTFE Catalog Sheet