DR/ES, DN 1/4 - 3/4

Name: DR/ES, DN 1/4 - 3/4
Brand: PROTEGO
SKU: product3288497620818

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

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Features

Compact Design

Eases Installation Close to Floors and Walls

Reduced Number of FLAMEFILTER® Discs

Low Number of FLAMEFILTER® Discs Due to Shock Absorber Technology

Fastest Disassembly and Assembly

of Single FLAMEFILTER®

Explosion Safety

Provides Protection Against Deflagration and Stable Detonation

Angle Bodied

Saves Pipe Elbows

State of the Art Protection

for Any Hydrogen/Air Mixture

Spare Parts

Cost-Effective Spare Parts

Low Costs

Low Operating and Lifecycle Costs

Function and Description

Protects Against Deflagrations and Stable Detonations

The PROTEGO® DR/ES Series In-Line Detonation with connection size up to ¾“ is ideal for installation in small pipes and to protect such as gas analyzers. The protects against deflagrations and stable detonations. It can be installed anywhere in the pipe no matter what the distance is from the potential . The small and compact Flame Arrester has a right angle design.

Main Component – PROTEGO® Flame Arrester Unit

Once a enters the Flame Arrester, energy is absorbed from the detonation shock wave by diversion mainly through the (1) before the flame is extinguished in the narrow gaps of the FLAMEFILTER® (3). The PROTEGO® Flame Arrester Unit (2) consists of several FLAMEFILTER® discs and spacers (for group IIC - NEC group B) whose gap size and number is determined by the operating parameters of the processed fluid (explosion group, pressure, temperature). This device is available for explosion groups IIB3 and IIC (NEC group C MESG ≥ 0.65 mm and B).

Many Individual Certifications

This In-Line Detonation Flame Arrester functions unidirectional and is equipped with a threaded connection. The thread can be adapted to international standards. The standard design is approved at an up to +60°C / 140°F and an absolute acc. to table 3. Devices with special approvals can be obtained for higher pressures and higher temperatures upon request. 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 Diamètre nominal The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), please use the flow capacity charts on the following pages

DN	G ¼"	G ½"	G ¾"
a	48 / 1.89	70 / 2.76	80 / 3.15
b	35 / 1.38	40 / 1.57	47 / 1.85
c	70 / 2.76	75 / 2.95	87 / 3.43
d	108 / 4.25	115 / 4.53	135 / 5.31
e	34 / 1.34	50 / 1.97	60 / 2.36

Dimensions in mm / inches

Selection of explosion group

MESG	Expl. Gr. (IEC / CEN)	Gas Group (NEC)
≥ 0,65 mm	IIB3	C
< 0,50 mm	IIC	B

Special approvals upon request

Selection of max. operating pressure

Expl. Gr.	DN	G ¼"	G ½"	G ¾"
IIB3	Pmax	1,2 / 17.4	1,2 / 17.4	1,2 / 17.4
IIC	Pmax	1,1 / 15.9	1,1 / 15.9	1,1 / 15.9

Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request,
Expl. Gr. IIB3 covers Expl. Gr. IIA

Specification of max. operating temperature

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

higher operating temperatures upon request

Material selection for housing

Design	B	C	D
Housing	Steel	Stainless Steel	Hastelloy
Cover with shock absorber*	Steel	Stainless Steel	Hastelloy
Gasket	PTFE	PTFE	PTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set.	A	A	B

G ¼" only comes in design C and D
* G ¼" without shock absorber

Special materials upon request

Material combinations of flame arrester unit

Design	A	B
FLAMEFILTER^®*	Stainless Steel	Hastelloy
Spacer	Stainless Steel	Hastelloy

* the FLAMEFILTER^® are also available in the materi- als Tantalum, Inconel, Copper, etc. when the listed housing Corps A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. and cage materials are used.

Special materials upon request

Type of connection

Pipe thread DIN ISO 228-1

DIN

other types of thread 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”.