EV/VS, EV/VD

EV/VS, EV/VD

Flame Arrester Unit for vacuum pumps, compressors and blowers

Function and Description

PROTEGO® EV/VS and PROTEGO® EV/VD flame arrester units provide manufacturers of vacuum 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. One of the safest measures against explosion propagation are flame arrester units that are installed on the inlet and outlet side of the machines. PROTEGO® EV/VS for inlet (vacuum side) and PROTEGO® 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.

PROTEGO® EV/VS and PROTEGO® EV/VD flame arrester units are modular in design and consist of several FLAMEFILTER® (1) and spacers firmly held in a FLAMEFILTER® cage (2). The number of FLAMEFILTER® and the gap size depend on the intended use. Both types have a threaded nozzle for temperature sensors. PROTEGO® EV/VS and PROTEGO® 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.

Features and Advantages

  • cost-effective alternative to complete flame arresters with flange connection
  • customized protection for vacuum pumps, blowers and compressors
  • modular design provides every user with the optimal PROTEGO® flame arrester unit
  • flexible design parameters result in lowest pressure drops
  • the modular design enables individual FLAMEFILTER® to be replaced and cleaned
  • lmodular design reduces spare parts cost
  • worldwide, long-term availability of spare parts in different materials

Dimensions

Dimensions in mm / inches

EV/VS, EV/VD

Material flame arrester unit

DesignABC
FLAMEFILTER® cageSteelStainless steelHastelloy
GasketPTFEPTFEPTFE
FLAMEFILTER® SetA, BB
C
DesignABC
FLAMEFILTER® cageSteelStainless steelHastelloy
GasketPTFEPTFEPTFE
FLAMEFILTER® SetA, BB
C

Special materials upon request

Material combinations of flame arrester unit

Design ACD
FLAMEFILTER® *Stainless steelStainless steelHastelloy
SpacersStainless steelStainless steelHastelloy
Design ACD
FLAMEFILTER® *Stainless steelStainless steelHastelloy
SpacersStainless steelStainless steelHastelloy

* the FLAMEFILTER® is also available in the materials Tantalum, Inconel, Copper, etc. when the listed cage materials are used.Special materials upon request

EV/VS, EV/VD

Selection of explosion group

FLAMEFILTER® gapMESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
0.7 mm> 0.90 mmIIAD
0.5 mm≥ 0.65 mmIIB3C
0.3 mm≥ 0.50 mmIIBC
0.2 mm< 0.50 mmIICB
FLAMEFILTER® gapMESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
0.7 mm> 0.90 mmIIAD
0.5 mm≥ 0.65 mmIIB3C
0.3 mm≥ 0.50 mmIIBC
0.2 mm< 0.50 mmIICB

Design Types and Specifications

There are four different designs:
Flame arrester unit for the inlet side, basic design

EV/VS –

Flame arrester unit for the inlet side with integrated temperature sensor* for additional protection against short-time burning on one side

EV/VS- T

Flame arrester unit for the pressure side, basic design

EV/VD –

Flame arrester unit for the pressure side with integrated temperature sensor* for additional protection against short-time burning on one side

EV/VD- T

Flame arrester unit for the inlet side, basic design

EV/VS –

Flame arrester unit for the inlet side with integrated temperature sensor* for additional protection against short-time burning on one side

EV/VS- T

Flame arrester unit for the pressure side, basic design

EV/VD –

Flame arrester unit for the pressure side with integrated temperature sensor* for additional protection against short-time burning on one side

EV/VD- T

*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
EV/VS, EV/VD
EV/VS, EV/VD
EV/VS, EV/VD