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B-Flap I - Explosion isolation flap valve

The innovated explosion isolation flap valve B-FLAP I is certified according to EN 16447 and EN 15089. B-FLAP I was tested by an accredited laboratory with emphasis on real-world conditions in the various production processes.

With the innovation, we bring extended installation options for the explosion isolation flap valve. According to current standards and certifications, the explosion isolation flap valve can be installed in horizontal and vertical pipeline. It can be used in aspiration systems with pull or push flow. B-FLAP I can also be installed on pipelines containing obstacles or elbows between the protected equipment and the place of installation of the explosion isolation valve. A novelty is also higher pressure resistance (pmax) of the isolation flap valve and increased maximum reduced pressure (pred,max) of the protected vessel, from which a potential explosion spreads. According to the latest tests and certifications, the minimum installation distance has been shortened, and the maximum installation distance from the protected equipment has been extended.

The B-Flap I explosion isolation flap valve can stop the propagation of an explosion caused by processed organic, melting, coarse, and metal dusts up to explosion class St 3 and dusts with very low values of minimum initiation energy (MIE) and temperature (MIT). This new design of the B-FLAP I explosion isolation flap valve makes it easier to handle during the installation and operational maintenance.

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Enhanced technical parameters of B-Flap I

The explosion isolation flap valve offers the customer effective prevention of explosion transmission between connected technologies. The explosion isolation flap valve isolates the explosion in the entire pipeline of the suction systems. Thus it is suitable not only to prevent the transmission of explosions at the inlet to the filter or cyclone but also to isolate the explosion on the outlet piping from filtration systems (so-called clean side of the filter). Other installation options of B-FLAP I are, for example, on the suction line to the mill, on the inlet, where material flows to dryers, and other similar equipment.

Explosion isolation flap valve B-FLAP I is a mechanical device designed to prevent the transfer of flame and pressure between technologies during an explosion. During normal operation, the explosion isolation flap valve is kept open using the RPD mechanism. This solution significantly reduces pressure losses in the piping system. During the explosion, the protected pipe will be closed and locked. Together with other safety elements, our flap valve forms an effective system for the protection of technological units. Most often, B-FLAP I is used in combination with an explosion venting device - VMP or FLEX. The explosion isolation flap valve is suitable for pipes with a diameter from DN 100 to DN 800.

If you use pneumatic conveying, vertical piping with a diameter of less than DN 100 in your technology, or you have technology designed for maximum explosion pressure or shorter installation distances, see GatEx or HRD barrier.

WHERE IS THE RISK?

In piping systems, during material conveying between individual parts of the production technology, initiation source (e.g. hot surface, friction, a spark from equipment failure, etc.) can be easily formed, which in combination with the flowing air and the transported material creates an explosive mixture. The pressure wave and the flame bursting through the piping system can explode and thus destroy the connected technologies or endanger personnel within a close range.

ADVANTAGES

  • certified according to EN 16447 and EN 15089
  • suitable for all types of dusts, including metal, up to explosion class St 3
  • certified for explosive dusts with extremely low values of minimum initiation energy and temperature (MIE, MIT)
  • applications for inlet and outlet suction routes of filtration systems
  • suitable for push and pull system
  • reverse flow application
  • possibility of installation on horizontal and vertical pipes
  • possibility of use in a piping system consisting of elbows and / or obstacles
  • wide range of sizes from DN 100 - DN 800
  • mechanical equipment without the need for electrical energy and a trigger mechanism
  • low pressure losses, high pressure resistance
  • possibility of equipping with a position indicator and / or pollution signalizator
  • easy installation, inspection, and maintenance
  • explosion isolation flap valve is locked when closed
  • standardly equipped with an RPD mechanism
  • optional possibility to produce in a stainless steel version

PREVENTION OF EXPLOSION propagation BETWEEN

  • spray dryers
  • filters
  • bins
  • mills
  • crushers
  • separators
  • cyclones
  • and other equipment where there is a risk of transmission of a dust explosion

Food industry - malthouse

Malthouses are an integral part of the food industry. This following case study will show you all risk areas, including the selection of the most suitable explosion protection designed by RSBP.

Malthouse protection RSBP

 

References from installations

TECHNICAL PARAMETERS 

 Type ØA
(mm)
ØB
(mm)
ØC
(mm)
L
(mm)
N
(mm)
P
(mm)
Weight (kg)
 DN 100 152 132 100 280 287 244 9
 DN 125 177 157 125 305 308 269 11
 DN 150 202 182 150 330 337 294 13
 DN 200 253 233 200 390 387 344 18
 DN 250 303 283 250 510 502 417 40
 DN 300 363 337 300 580 552 467 50
 DN 315 378 352 315 600 567 482 53
 DN 355 418 392 355 630 607 522 61
 DN 400 464 438 400 695 652 568 77
 DN 450 514 488 450 750 702 619 88
 DN 500 564 538 500 800 752 669 101
 DN 560 664 629 560 930 838 745 157
 DN 630 734 698 630 1005 908 815 180
 DN 710 814 775 710 1156 1102 967 305
 DN 800 904 861 800 1246 1193 1057 351

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Customer data
Project data
Product (dust) specification

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Maximum size of one file is 5 MB.
Maximum count of uploaded files is 10.

Equipment specification

Maximum size of one file is 5 MB.
Maximum count of uploaded files is 10.

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Vizualization 1

  • Type of protection: Explosion venting device VMP
  • Installation of flap valve: Inlet pipe to the filter
  • Position of flap valve: Horizontal

Vizualization 2

  • Type of protection: Flameless explosion venting device Flex
  • Installation of flap valve: Inlet pipe to the filter
  • Position of flap valve: Horizontal

Vizualization 3

  • Type of protection: Explosion venting device VMP
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Horizontal

Vizualization 4

  • Type of protection: Flameless explosion venting device Flex
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Horizontal

Vizualization 5

  • Type of protection: Explosion venting device VMP
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Horizontal

Vizualization 6

  • Type of protection: Flameless explosion venting device Flex
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Horizontal

Vizualization 7

  • Type of protection: Explosion venting device VMP
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Vertical

Vizualization 8

  • Type of protection: Flameless explosion venting device Flex
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Vertical

Vizualization 9

  • Type of protection: Explosion venting device VMP
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Vertical

Vizualization 10

  • Type of protection: Flameless explosion venting device Flex
  • Installation of flap valve: Inlet and outlet pipe
  • Position of flap valve: Vertical