FA-I-V, FA-I-P
Flame Arrester for vacuum pumps, compressors and blowers
- customized protection for vacuum pumps, blowers and compressors
- modular design provides every user with the optimal flame arrester
- flexible design parameters result in lowest pressure drops
- modular flame arrester unit enables individual FLAMEFILTER® to be replaced and cleaned
- modular design reduces spare parts cost
- worldwide, long-term availability of spare parts
Function and Description
PROTEGO® FA-I-V and FA-I-P flame arresters are specifically designed for vacuum pumps, blowers, and compressors. The high flow velocity 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 vacuum and pressure side of the equipment. PROTEGO® FA-I-V devices for the vacuum side and PROTEGO® FA-I-P devices for the pressure side provide a unique modular design that gives every manufacturer of vacuum pumps or comparable devices the option of using optimized and adapted flame arresters. Our expert technical staff will assist you with the proper selection of the devices as well as execution of type testing.
PROTEGO® FA-I-V and FA-I-P devices are symmetrical in design. The arrester essentially consists of two housing parts (1) and the PROTEGO® flame arrester unit (2) in the center. The PROTEGO® flame arrester unit is modular and consists of several FLAMEFILTER® (3) and spacers firmly held in a FLAMEFILTER® cage. The number of FLAMEFILTER® and their gap size depends on the arrester´s conditions of use. PROTEGO® FA-I-V and FA-I-P flame arresters are available for explosion groups IIA to IIC (NEC groups D to B) and special gases such as ethylene oxide.
Dimensions
Dimensions in mm / inchesMaterial selection for housing
Design | A | B | C |
Housing | Steel | Stainless steel | Hastelloy |
Gasket | PTFE | PTFE | PTFE |
Flame arrester unit | A, B | B | C |
Material combinations of flame arrester unit
Design | A | C | D |
FLAMEFILTER® cage | Steel | Stainless Steel | Hastelloy |
FLAMEFILTER®* | Stainless Steel | Stainless Steel | Hastelloy |
Spacers | Stainless Steel | Stainless Steel | Hastelloy |
Selection of explosion group
FLAMEFILTER® gap | MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
0.7 mm | > 0.90 mm | IIA | D |
0.5 mm | ≥ 0.65 mm | IIB3 | C |
0.3 mm | ≥ 0.50 mm | IIB | C |
0.2 mm | < 0.50 mm | IIC | B |
Flange connection type
EN 1092-1; Form B1 |
ASME B16.5 CL 150 R.F. |
Design Types and Specifications
There are fi ve different designs:
Flame arrester for low pressure side in the basic design | FA-I -V - – |
Flame arrester for the low pressure side with integrated temperature sensor* for additional protection against short-time burning on one side | FA-I -V - T |
Flame arrester for the pressure side in the basic design | FA-I -P - – |
Flame arrester for the pressure side with integrated temperature sensor* for additional protection against short-time burning on one side (recommended) | FA-I -P - T |
Additional special devices available upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)