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Q-Flap RX™

Effectively isolated.


Isolating of raw gas lines to filters + separators.

In the event of an explosion, the Q-Flap RX™ explosion isolation flap valve effectively isolates plant components in almost all industrial sectors. In order to meet the highly diverse requirements for the individual industries, the Q-Flap RX™ product range offers three different design versions. The nominal pipe sizes up to DN 710 feature an inspection flap, and the larger nominal pipe sizes have a modular design. This ensures that a maintenance and servicing of any pipe size can be carried out easily.
The Q-Flap RX™ is also perfectly suited, for the aspiration lines of filtering dust collectors, and for the suction intake lines of mills. The nominal pipe sizes up to DN 400 are primarily used for decentralised extraction systems in the pharmaceutical and chemical industries, whereas nominal pipe sizes between DN 450 and DN 710 are also used for centralised dust extractors in the grain and food industry. Nominal pipe sizes from DN 800 to DN 1000 are used in the wood and heavy industry.
REMBE® Q-Flap RX™ with Accessoires

Spare parts set

  • Quick maintenance without the need for a complete dismantling of the device, simply by completely opening the inspection flap on pipe sizes up to DN 710.
  • Optionally: longer maintenance intervals by integrating a supervision function.
  • No boundary’s: Q-Flap RX™ available up to DN1000. More sizes available on request.
When the system is shut down, the valve blade rests in an inclined position. During normal operation, the explosion isolation flap valve is kept open by the air flow of the system. In the event of an explosion, the valve blade is closed by the pressure wave of the explosion.
Technical data
Product parameters
With swith/without switch (please indicate on order)**, Steel/stainless steel (please indicate on order)
According to EU guideline 2014/34/EU (ATEX 114) and NFPA 69***
Mounting position*
Horizontal, suction side (fan after flap "pull flow")
Operating air flow velocity
12 to 35 m/s
Ambient temperature: -20°C up to +80°C (without switch max. +100°C), Process temperature: +1° C up to +80 °C (without switch max. +100 °C)
Housing: steel/stainless steel**, flap blade: stainless steel, sealing: EPDM/silicone, PTFE
Connection flange
DIN 24154 part 2
Raw gas dust concentration
max. 100 g/m³
* Our specialists will gladly consult you personally in case of deviating operating conditions.
** On request.
*** Optional.
Applications + Industries
  • animal feed productions
  • aspiration plants
  • brewery
  • chemical- petrochemical
  • filters
  • food
  • food production
  • mills and grinding plants
  • mixers
  • recycling
  • wood processing


Certified in
accordance with

EN 16447
ATEX EC type examination certificate no. GEX 19 ATEX 1004X (DN 140 to 1000)

ATEX EC type
examination certificate no. GEX 19 ATEX 1004X (DN 140 to 1000)

Meets the requirements of NFPA 69

Meets the requirements of NFPA 68

The Q-Flap RX™ ensures reliable explosion isolation to protect your plant and minimize the effects of an explosion.

Click and drag image to view.

Scan the QR code with your iOS camera* to see an AR preview of the product.
Q Flap RX AR Viewer Ru
The dimensions shown may differ from those of the actual product.
* Requires iOS 13, iPadOS 13, ARCore 1.9 or higher.

Any Questions?

We would be happy to show you solutions tailored to your process that limit the effects of an explosion to a harmless level and ensure that production can be resumed quickly after an explosion event.
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REMBE® GmbH Safety+Control
© REMBE® GmbH Safety+Control