Protego DAZ-S In-Line Detonation Flame Arrester, Endurance Burning Proof, ATEX
For Stable Detonations And Deflagrations In A Straight Through Design, Uni Directional
DAZ-S Explosion Group: IIA1, D / IIA, C / IIB1, C / IIB2, C / IIB3, B / IIB, B / IIC
- State of the art protection for hydrogen/air mixture minimal pressure loss resulting in low operating and lifecycle costs
- Advanced design for higher operating temperatures and pressures
- Installation of temperature sensors possible
- Modular design enables replacement of the individual FLAMEFILTER
- Maintenance-friendly design
- Cost-effective spare parts
Function and Description
The in-line detonation flame arresters type PROTEGO DAZ-S are unidirectional flame arresters of the newest generation. The unidirectional (effective on one side) devices protect potentially explosive plants or plant sections (tanks, machines etc.) against ingression of flames which propagate from an ignition source in a pipe as a pipe deflagration or detonation. Based on flow and explosion dynamic calculations as well as decades of field tests, a product line was developed that offers minimum pressure losses with maximum safety.
The arrester essentially consists of two different 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 discs (3) and spacers firmly held in a FLAMEFILTER casing.
The number of FLAMEFILTER discs and their gap size depends on the arrester‘s intended use. The PROTEGO DAZ-S flame arresters are available for explosion group IIC (NEC B).
The standard design can be used with an operating temperature of up to +60°C / 140°F . Numerous devices with special approval for higher pressures (see table 3) and higher temperatures (see table 4) are available upon request.
EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Dimensions | NG | | 200 / 8" | 300 / 12" |
| DN | | 100 / 4" | 150 / 6" |
| a | | 340 / 13.39 | 445/ 17.52 |
| b | IIX-P1,2-X2 | - | 640 / 25.20 |
| | IIC-P1,2-X3 | 500 / 19.69 | - |
| | IIC-P1,3 | - | 640 / 25.20 |
| c | | 415 / 16.34 | 570 / 22.44 |
To select the nominal width/nominal size (NG/DN) - combination, use the flow capacity charts. *Dimensions in mm / inches.
Material Selection For Housing| Design | A | B |
|
| Housing | Steel | Stainless Steel |
| Housing jacket (DAZ-S-(T)-H...) | Steel | Stinless Steel |
| Gasket | PTFE | PTFE |
| Flame Arrester Unit | A, B | B |
The housing is also available in carbon steel with an ECTFE coating. Special materials upon request.
Material Combinations Of Flame Arrester Unit| Design | A | B |
|
| FLAMEFILTER cage | Steel | Stainless Steel |
| FLAMEFILTER | Stainless Steel | Stainless Steel |
| Spacer | Stainless Steel | Stainless Steel |
Special materials upon request.
Selection Of The Explosion Group| MESG | Expl. Gr. (IEC/CEN) | Gas Group (NEC) | Special Approvals Upon Request |
| > 0.50 mm | IIC | B |
Selection Of Max Operating Pressure| Marking | NG | 200 / 8 " | 300 / 12" |
| | DN | 100 /4 " | 150 / 6" |
| IIC-P1, 2-X3 | Pmax | - | 1.2 / 17.4 |
| IIC-P1,2-X2 | Pmax | 1.2 / 17.4 | - |
| IIC-P1,3 | Pmax | - | 1.3 / 18.9 |
Pmax = maximum allowable operating pressure bar / psi absolute in-between size up to Pmax upon request.
Specification Of Max Operating Temperature| ≤ 60 °C/ 140 °F | 180 C / 356 F | 200 C / 392 F | T maximum allowable operating temperature in °C |
| - | X2 | X3 | Designation |
Higher operating temperatures upon request.
Flange Connection Type| EN 1092-1; Form B1 |
| ASME B16.5 CL R.F |
Design Types And Specifications| DAZ-S- | Basic design of the detonation flame arrester. |
| DAZ-S-T | In-line detonation flame arrester with integrated temperature sensor* as additional protection against short burning from one side. |
| DAZ-Z-H | In-line detonation flame arrester with heating jacket upon request |
*Resistance thermometer (Ex i II 1/2 G Ex ia IIC T1...T6 Ga/Gb).
