DR/ES, DN 1/4 - 3/4
In-Line Detonation Flame Arrester for stable detonations and deflagrations in right angle design, unidirectional
Features
Function and Description
Protects Against Deflagrations and Stable Detonations
The PROTEGO® DR/ES Series In-Line Detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave. 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. with connection size up to ¾“ is ideal for installation in small pipes and to protect equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. such as gas analyzers. 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. protects against deflagrations and stable detonations. It can be installed anywhere in the pipe no matter what the distance is from the potential ignition source Ignition source Any source with enough energy to initiate combustion. . The small and compact Flame Arrester has a right angle design.
Main Component – PROTEGO® Flame Arrester Unit
Once a detonation enters the Flame Arrester, energy is absorbed from the detonation shock wave by diversion mainly through the shock absorber Shock absorber A shock absorber is a device that reduces the kinetic energy of a detonation. (1) before the flame is extinguished in the narrow gaps of the FLAMEFILTER® (3). The PROTEGO® Flame Arrester Unit PROTEGO® flame arrester unit The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation. (2) consists of several FLAMEFILTER® discs and spacers (for explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group IIC - NEC group B) whose gap size and number is determined by the operating parameters of the processed fluid ( explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group, pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. , temperature). This device is available for explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. groups IIB3 and IIC (NEC group C MESG ≥ 0.65 mm and B).
Many Individual Certifications
This In-Line Detonation Flame Arrester functions unidirectional and is equipped with a threaded connection. The thread can be adapted to international standards. The standard design is approved at an operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. up to +60°C / 140°F and an absolute operating pressure Operating pressure Operating pressure is the pressure existing at normal operating conditions within the system being protected. acc. to table 3. Devices with special approvals can be obtained for higher pressures and higher temperatures upon request. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Dimensions
To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), please use the flow capacity charts on the following pages
| DN | G ¼" | G ½" | G ¾" |
| a | 48 / 1.89 | 70 / 2.76 | 80 / 3.15 |
| b | 35 / 1.38 | 40 / 1.57 | 47 / 1.85 |
| c | 70 / 2.76 | 75 / 2.95 | 87 / 3.43 |
| d | 108 / 4.25 | 115 / 4.53 | 135 / 5.31 |
| e | 34 / 1.34 | 50 / 1.97 | 60 / 2.36 |
Dimensions in mm / inches
Material selection for housing
| Design | B | C | D |
| 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. | Steel | Stainless Steel | Hastelloy |
| Cover with shock absorber* | Steel | Stainless Steel | Hastelloy |
| Gasket | PTFE | PTFE | PTFE |
| Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. | A | A | B |
G ¼" only comes in design C and D
* G ¼" without shock absorber
Special materials upon request
Material combinations of flame arrester unit
| Design | A | B |
| FLAMEFILTER®* | Stainless Steel | Hastelloy |
| Spacer Spacer The spacer is a component that is generally used in a PROTEGO® flame arrester as a spacer within the FLAMEFILTER® set. | Stainless Steel | Hastelloy |
* the FLAMEFILTER® are also available in the materi- als Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are used.
Special materials upon request
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| ≥ 0,65 mm | IIB3 | C |
| < 0,50 mm | IIC | B |
Special approvals upon request
Selection of max. operating pressure
| Expl. Gr. | DN | G ¼" | G ½" | G ¾" |
| IIB3 | Pmax | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 |
| IIC | Pmax | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 |
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request,
Expl. Gr. IIB3 covers Expl. Gr. IIA
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Type of connection
| Pipe thread DIN ISO 228-1 | DIN |
other types of thread upon request
Flow Capacity Chart
The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.
