DR/EU

Name: DR/EU
Brand: PROTEGO
SKU: product3288169217277

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

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Features

Reduced Number of FLAMEFILTER® Discs

Low Number of FLAMEFILTER® Discs Due to Shock Absorber Technology

Fastest Disassembly and Assembly

of Single FLAMEFILTER®

Modular Design

Allows Replacement and Cleaning of Single FLAMEFILTER®

Angle Bodied

Saves Pipe Elbows

Spare Parts

Cost-Effective Spare Parts

Provides Safety

Protects Against Deflagrations for All Explosion Groups IIA, IIB3 and IIC (NEC Groups D, C and B)

Extended Application Range

for Elevated Operating Temperatures and Pressures

Low Costs

Low Operating and Lifecycle Costs

Function and Description

Protects Against Deflagrations and Stable and Unstable Detonations

The PROTEGO® DR/EU series of in-line represents further development of PROTEGO® Flame Arrester Series DR/ES, which has been successfully used in industry for decades. The protects against deflagrations and stable and unstable detonations. The classic right-angle design offers considerable costs and advantages over the straight-through design.

Main Component – PROTEGO® Flame Arrester Unit

Once a enters the , energy is absorbed from the detonation shock wave by the integrated (1) before the flame is extinguished in the narrow gaps of the FLAMEFILTER® (3). The (2) consists of several FLAMEFILTER® discs and spacers firmly held in the (4). The gap size and number of FLAMEFILTER® discs are by the operating conditions of the flowing mixture ( group, pressure, temperature). This device is can be used for explosion groups from IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).

Many Individual Certifications

The standard design can be used with an of up to +60°C / 140°F and an absolute acc. to table 3. Devices with special approval for higher pressures and temperatures are available 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 Nominal size 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	25 / 1"	32 / 1¼“	40 / 1½“	50 / 2“	65 / 2½“	80 / 3"	100 / 4"	125 / 5"	150 / 6"
a	125 / 4.92	125 / 4.92	153 / 6.02	155 / 6.10	198 / 7.80	200 / 7.87	250 / 9.84	332 / 13.07	335 / 13.19
b	140 / 5.51	140 / 5.51	183 / 7.20	185 / 7.28	223 / 8.78	225 / 8.86	290 / 11.42	357 / 14.06	360 / 14.17
c	210 / 8.27	210 / 8.27	290 / 11.42	290 / 11.42	365 / 14.37	365 / 14.37	440 / 17.32	535 / 21.06	535 / 21.06
c1	285 / 11.22	285 / 11.22	395 / 15.55	395 / 15.55	500 / 19.69	500 / 19.69	595 / 23.43	750 / 29.53	750 / 29.53
d	150 / 5.91	150 / 5.91	210 / 8.27	210 / 8.27	275 / 10.83	275 / 10.83	325 / 12.80	460 / 18.11	460 / 18.11
e	495 / 19.49	495 / 19.49	600 / 23.62	600 / 23.62	705 / 27.76	705 / 27.76	795 / 31.30	950 / 37.40	950 / 37.40

Dimensions in mm / inches

Selection of explosion group

MESG	Expl. Gr. (IEC / CEN)	Gas Group (NEC)
> 0,90 mm	IIA	D
≥ 0,65 mm	IIB3	C

Special approvals upon request

Selection of max. operating pressure

Expl. Gr.	DN	25 / 1"	32 / 1¼"	40 / 1½"	50 / 2"	65 / 2½"	80 / 3"	100 / 4"	125 / 5"	150 / 6"
IIA	Pmax	1,6 / 23.3	1,6 / 23.3	1,6 / 23.3	1,6 / 23.3	1,6 / 23,.3	1,6 / 23.3	1,5 / 21.7	1,2 / 17.4	1,2 / 17.4
IIB2	Pmax								1,4 / 20.3	1,4 / 20.3
IIB3	Pmax	1,6 / 23.2	1,6 / 23.3	1,6 / 23.3	1,6 / 23.3	1,6 / 23.3	1,6 / 23.3	1,4 / 20.3	1,2* / 17.4	1,2* / 17.4

Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request, * Special flame arrester unit

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 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.	Carbon Steel	Stainless Steel	Hastelloy
Heating jacket (DR / EU-H-(T)-...)	Steel	Stainless Steel	Stainless Steel
Cover with shock absorber	Steel	Stainless Steel	Hastelloy
O-Ring	FPM*	PTFE	PTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set.	A	C, D	E	Special materials upon request

* for devices exposed to elevated temperatures above 150°C / 302°F (T150), gaskets made of PTFE.

The housing and cover with the shock absorber can also be delivered in steel with an ECTFE coating Coating Coating is the application of a firmly adhering layer of shapeless material to the surface of a workpiece. .

Material combinations of flame arrester unit

Design	A	C	D	E
FLAMEFILTER^® cage	Steel	Stainless Steel	Stainless Steel	Hastelloy
FLAMEFILTER^®*	Stainless Steel	Stainless Steel	Hastelloy	Hastelloy
Spacer Spacer The spacer is a component that is generally used in a PROTEGO® flame arrester as a spacer within the FLAMEFILTER® set.	Stainless Steel	Stainless Steel	Hastelloy	Hastelloy

* the FLAMEFILTER® are also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are used.

Special materials upon request

Flange connection type

EN 1092-1; Form B1

ASME B16.5 CL 150 R.F.

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”.