EV/VS, EV/VD
Flame Arrester Unit for vacuum pumps, compressors and blowers
Features
Function and Description
Against the Propagation of Explosions
EV/VS and EV/VD Flame Arrester Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. 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 Unit
EV/VS for inlet (vacuum side) and EV/VD for outlet ( pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric 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 Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. groups from IIC to IIA (NEC groups B to D) and special gases such as Ethylene oxide.
Dimensions
Dimensions in mm / inches
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
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:*Resistance thermometer for 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. group II, category (1) 2 (GII cat. (1) 2)
