DR/SBW

Name: DR/SBW
Brand: PROTEGO
SKU: product3288527391671

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

Features

Easy Maintenance

Extraordinarily Easy to Service

Reduced Number of FLAMEFILTER® Discs

Low Number of FLAMEFILTER® Discs Due to Shock Absorber Technology

Modular Design

Allows Replacement and Cleaning of Single FLAMEFILTER®

Bi-Directional Flame Transmission

Proof Design

Extended Application Range

for Elevated Operating Temperatures and Pressures

Temperature Sensors Possible

Use of Temperature Sensors for G 1½ and G 2 Is Possible

Spare Parts

Cost-Effective Spare Parts

Low Costs

Low Operating and Lifecycle Costs

Function and Description

Maintenance-Friendly In-Line-Detonation Flame Arrester

In the development of the PROTEGO® DR/SBW In-Line Detonation Flame Arrester, special effort was made to ease future maintenance of the Flame Arresters. The PROTEGO® Flame Arrester Unit (5) can be removed and cleaned within moments without having to disassemble the piping. The effective shock absorber of the device and elaborate housing geometry reduces the number of FLAMEFILTER® discs to a minimum.

Main Component – PROTEGO® Flame Arrester Unit

The device is symmetrical and offers bidirectional flame arresting protecting from stable detonations and deflagrations. The Flame Arrester consists of a double-jacket housing (1) with two integrated shock absorbers (2) with the PROTEGO® Flame Arrester Unit in the center. The PROTEGO® Flame Arrester Unit consists of several FLAMEFILTER® discs (4) and spacers firmly held in a FLAMEFILTER® cage (3). The number of FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use. By indicating the operating parameters such as the temperature, pressure and explosion group and the composition of the fluid, the optimum In-Line Detonation Flame Arrester can be selected. The PROTEGO® DR/SBW Series of Flame Arresters is available for explosion groups IIA to IIB3 (NFPA group D to C MESG ≥ 0.65 mm).

Many Individual Certifications

The standard design is approved at an operating temperature up to +60°C / 140°F and an absolute operating pressure acc. to table 3. Devices with special approvals can be obtained for higher pressures and higher temperatures upon request. Type-approved in accordance with the current ATEX Directive and as well as other international standards.

Product Data

Dimensions

To select the nominal size (DN) and nominal width (NG), please use the flow capacity charts on the following pages

DN	50 / 2"	80 / 3"	100 / 4"	150 / 6"	200 / 8"	250 / 10"	300 / 12"	350 / 14"	400 / 16"
NG	150 / 6"	150 / 6"	200 / 8"	300 / 12"	500 / 20"	500 / 20"	600 / 24"	700 / 28"	800 / 32"
a	225 / 8.86	225 / 8.86	275 / 10.83	350 / 13.78	550 / 21.65	550 / 21.65	725 / 28.54	800 / 31.50	825 / 32.48
b	210 / 8.27	210 / 8.27	220 / 8.66	290 / 11.42	525 / 20.67	525 / 20.67	590 / 23.23	655 / 25.78	725 / 28.54
b1*	325 / 12.80	325 / 12.80	360 / 14.17	475 / 18.70	835 / 32.87	835 / 32.87	960 / 37.80	1075 / 42.32	1215 / 47.83
c	395 / 15.55	395 / 15.55	410 / 16.14	475 / 18.70	630 / 24.80	630 / 24.80	700 / 27.56	765 / 30.12	835 / 32.87
c1*	450 / 17.72	450 / 17.72	465 / 18.31	530 / 20.87	730 / 28.74	730 / 28.74	800 / 31.50	865 / 34.06	935 / 36.81
d	275 / 10.83	275 / 10.83	325 / 12.80	460 / 18.11	840 / 33.07	840 / 33.07	1000 / 39.37	1150 / 45.28	1250 / 49.21

Dimensions in mm / inches

* b1 dismantling dimension for servicing
c1 dismantling dimension for servicing (temperature sensor)

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

DN			50 / 2"	80 / 3"	100 / 4"	150 / 6"	200 / 8"	250 / 10"	300 / 12"	350 / 14"	400 / 16"
		NG	150 / 6"	150 / 6"	200 / 8"	300 / 12"	500 / 20"	500 / 20"	600 / 24"	700 / 28"	800 / 32"
Expl. Gr.	IIA	Pmax	4 / 58	4 / 58	3 / 43.5	3 / 43.5	1.6 / 23.2	1.6 / 23.2	1.1 / 15.9	1.1 / 15.9	1.1 / 15.9
Expl. Gr.	IIB3	Pmax	1.7 / 24.6	1.7 / 24.6	1.7 / 24.6	1.7 / 24.6	1.2 / 17.4	1.2 / 17.4	1.1 / 15.9	1.1 / 15.9	1.1 / 15.9

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 selection for housing

Design	A	B	C
Housing	Steel	Stainless Steel	Hastelloy
Heating jacket (DR / SBW-H-(T)-...)	Steel	Stainless Steel	Stainless Steel
Cover with shock absorber	Steel	Stainless Steel	Hastelloy
Gasket	FPM*	PTFE	PTFE
Flame arrester unit	A	C, D	E

* for devices exposed to elevated temperatures above 150°C / 302 °F (T150), gaskets made of PTFE. Special device with unidirectional shock absorber DR/SW-... from DN 50 resp. NG 150 available.

Special materials upon request

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	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.

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”.

DR/SBW Catalog Sheet