EV/VS, EV/VD
Flame Arrester Unitfor vacuum pumps, compressors and blowers
Features
Modular Design
allows replacement and cleaning of single FLAMEFILTER®
Differnt Series
allow increase of FLAMEFILTER® size for given flange connection resulting in lower pressure drop across the
device
Device
A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow.
Spare Parts
cost-effective flame arrester / spare parts
Versatile Application Options
various uses possible
Stainless Steel or Hastelloy
all function-relevant and
product
Product
Includes equipment, protective systems, devices, components and combinations of these.
-contacting parts are made of stainless steel or Hastelloy
Temperature Sensors Possible
use of temperature sensors for G 1½ and G 2 is possible
Function and Description
Against the Propagation of Explosions
EV/VS and EV/VD flame arrester units provide manufacturers of
vacuum
Vacuum
Vacuum is the pressure in an enclosed space that is lower than the ambient pressure.
pumps, blowers and compressors with a cost-effective protection for their machines. The high flow velocities in the small gaps of these machines can lead to undesirable ignitions within the
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.
. One of the safest measures against
explosion
Explosion
Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously.
propagation are flame arrester units that are installed on the inlet and outlet side of the machines.
Main component - PROTEGO® flame arrester
EV/VS for inlet (vacuum side) and EV/VD for outlet (pressure side) are flame arrester units without housing. They are designed modular providing each manufacturer of blowers, vacuum pumps or similar devices the option of using optimized, adapted, and cost-effective flame arrester units. Our expert technical staff will assist you with the proper selection of the devices as well as execution of type testing.
For Explosion groups IIA to IIC
EV/VS and EV/VD flame arrester units are modular in design and consist of several FLAMEFILTER® (1) installed within the
FLAMEFILTER® cage
FLAMEFILTER® cage
The FLAMEFILTER® cage is a housing for a FLAMEFILTER® set.
(2). The number of FLAMEFILTER® and the gap size depend on the intended use. Both types have a threaded nozzle for temperature sensors. EV/VS and EV/VD flame arrester units are available for explosion groups from IIC to IIA (NEC groups B to D) and special gases such as ethylene oxide.
Product Data and Features
Dimensions
Dimensions in mm / inches
Selection of FLAMEFILTER® gap
| FLAMEFILTER® gap |
| 0.7 mm |
| 0.5 mm |
| 0.3 mm |
| 0.2 mm |
If you have any questions regarding the selection of the FLAMEFILTER® (number and gap width), our trained specialists will be happy to advise you.
Design Types and Specifications
There are four different designs:
Flame arrester unit
Flame arrester unit
Flame arrester casing with FLAMEFILTER® set.
for the inlet side, basic designEV/VS –
Flame arrester unit for the inlet side with
integrated temperature sensor
Integrated temperature sensor
Temperature sensor integrated into the flame arrester, as specified by the manufacturer of the flame arrester, in order to provide a signal suitable to activate counter measures.
* for additional protection against short-time burning on one sideEV/VS- T
Flame arrester unit for the pressure side, basic designEV/VD –
Flame arrester unit for the pressure side with integrated temperature sensor* for additional protection against short-time burning on one sideEV/VD- T
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
Material flame arrester unit
| Design | A | B | C |
| FLAMEFILTER® cage | Steel | Stainless steel | Hastelloy |
| Gasket | PTFE | PTFE | PTFE |
| FLAMEFILTER® Set | A, B | B | C |
Special materials upon request
Material combinations of flame arrester unit
| Design | A | C | D |
| FLAMEFILTER® * | Stainless steel | Stainless steel | Hastelloy |
| Spacers | Stainless steel | Stainless steel | Hastelloy |
* the FLAMEFILTER® is also available in the materials Tantalum, Inconel, Copper, etc. when the listed cage materials are used.
Special materials upon request
Applications