DR/ES-V
In-Line Detonation Flame Arrester with integrated pressure relief valve, for stable detonations and deflagrations in right angle design with shock absorber, unidirectional
Caractéristiques
Fonction et description
Protects Against Deflagration and Stable Detonation
PROTEGO® DR/ES-V Series uniquely combines the function of an 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 the function of a pressure relief valve Pressure-relief valve Valve designed to open and relieve excess pressure and to reclose and prevent the further flow of fluid after normal conditions have been restored. in one 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. . The device protects against deflagration Deflagration Explosion propagating at subsonic velocity. and stable detonation Stable detonation A detonation is stable when it progresses through a confined system without significant variation of velocity and pressure characteristics. . The weight-loaded pallet type valve (5) integrated in the shock absorber Shock absorber A shock absorber is a device that reduces the kinetic energy of a detonation. (1) of the In-Line Detonation Flame Arrester is designed as a pressure relief valve. The set pressure Set pressure Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions. of the valve is adjusted in the factory and can range from 2 to 35 mbar (0.8 to 14 inch W.C.). After the pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. increases 40% from its set pressure, the valve completely opens to yield the maximum volumetric flow.
In-Line Detonation Flame Arrester for Vent Headers
If installed in vent headers connected to storage tanks, the valve pallet Valve pallet Valve pallet is the generic term for the assembly that rests on the valve seat. works as a check valve Check valve A check valve allows flow of the operating media in one direction and prevents flow in the opposite direction. . This means that the product Product Includes equipment, protective systems, devices, components and combinations of these. cannot flow back from the suction line into the tank. Although several functions are integrated in a single 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. , the device is extremely easy to service, which is primarily due to the right-angle design. Once a detonation enters the Flame Arrester, energy is absorbed from the detonation shock wave by the integrated shock absorber, before the flame is extinguished in the narrow gaps of the FLAMEFILTER® (3). The flame suppression is guaranteed, regardless of the valve pallet position.
For Explosion Groups IIA to IIB3
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 firmly held in the FLAMEFILTER® casing FLAMEFILTER® cage The FLAMEFILTER® cage is a housing for a FLAMEFILTER® set. (4). The gap size and number of FLAMEFILTER® discs depend on the operating conditions of the flowing mixture ( explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group, 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 from IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm). The standard design is approved for an operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. of up to +60°C / 140°F and absolute operating pressure Operating pressure Operating pressure is the pressure existing at normal operating conditions within the system being protected. up to 1.2 bar / 17.4 psi. Devices with special approval for higher pressures and temperatures are available 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 | 25 / 1" | 32 / 1¼“ | 40 / 1½“ | 50 / 2“ | 65 / 2½“ | 80 / 3“ | 100 / 4“ | 125 / 5“ | 150 / 6" | 200 / 8" |
| a | 125 / 4.92 | 125 / 4.92 | 153 / 6.02 | 155 / 6.10 | 198 / 7.80 | 200 / 7.87 | 250 / 9.84 | 332 / 13.07 | 335 / 13.19 | 425 / 16.73 |
| b | 140 / 5.51 | 140 / 5.51 | 183 / 7.20 | 185 / 7.28 | 223 / 8.78 | 225 / 8.86 | 290 / 11.42 | 357 / 14.06 | 360 / 14.17 | 505 / 19.88 |
| c | 237 / 9.33 | 237 / 9.33 | 305 / 12.01 | 305 / 12.01 | 395 / 15.55 | 395 / 15.55 | 460 / 18.11 | 575 / 22.64 | 575 / 22.64 | 863 / 33.98 |
| c1 | 345 / 13.58 | 345 / 13.58 | 410 / 16.14 | 410 / 16.14 | 530 / 20.87 | 530 / 20.87 | 615 / 24.21 | 790 / 31.10 | 790 / 31.10 | 1295 / 50.98 |
| d | 149 / 5.87 | 149 / 5.87 | 210 / 8.27 | 210 / 8.27 | 275 / 10.83 | 275 / 10.83 | 325 / 12.80 | 460 / 18.11 | 460 / 18.11 | 620 / 24.41 |
Dimensions in mm / inches
Material selection for housing
| Design | B | C | D |
| Design | Steel | Stainless Steel | Hastelloy |
| Heating jacket (DR / ES-V-H-...) | Steel | Stainless Steel | Stainless Steel |
| Cover with shock absorber | Steel | Stainless Steel | Hastelloy |
| Gaskets | PTFE | PTFE | PTFE |
| Valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed. | Stainless Steel | Stainless Steel | Stainless Steel |
| Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. | A | C, D | E |
The housing and the cover with shock absorber can also be delivered in steel with an ECTFE coating Coating Coating is the application of a firmly adhering layer of shapeless material to the surface of a workpiece. .
Special materials upon request
Material combinations of flame arrester unit
| Design | A | C | D | E |
| FLAMEFILTER® cage | Steel | Stainless Steel | Stainless Steel | Hastelloy |
| FLAMEFILTER®* | Stainless Steel | Stainless Steel | Hastelloy | 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 | Stainless Steel | Hastelloy | Hastelloy |
* the FLAMEFILTER® are also available in the materials 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) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Selection of max. operating pressure
| Expl. Gr. | DN | 25 / 1" | 32 / 1¼" | 40 / 1½" | 50 / 2" | 65 / 2½" | 80 / 3" | 100 / 4" | 125 / 5" | 150 / 6" | 200 / 8" |
| IIA | Pmax | 4,0 / 58.0 | 4,0 / 58.0 | 4,0 / 58.0 | 4,0 / 58.0 | 2,9 / 42.1 | 2,9 / 42.1 | 2,0 / 29.0 | 2,0 / 29.0 | 2,0 / 29.0 | 1,2 / 17.4 |
| IIB3 | Pmax | 3,0 / 43.5 | 3,0 / 43.5 | 2,0 / 29.0 | 2,0 / 29.0 | 2,0 / 29.0 | 2,0 / 29.0 | 1,5 / 21.7 | 1,4 / 20.3 | 1,4 / 20.3 | 1,1 / 15.9 |
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Selection of valve pallet
| Design | A | B | C |
| Pressure range | I | II | III |
| Set pressure [mbar] | +2.0 up to +3.5 | >+3.5 up to +14 | >+14 up to 35 |
| [inch W.C.] | +0.8 up to +1.4 | >+1.4 up to +5.6 | >+5.6 up to 14 |
| Valve pallet | Aluminium | Stainless Steel | Stainless Steel |
| Sealing | FEP | FEP | Metal to Metal |
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections upon request
Design Types and Specifications
There are two different designs available:Set pressure
| Pressure: | +2.0 mbar | +35 mbar |
| +0.8 inch W.C. | +14 inch W.C. |
Higher or lower settings 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”.
