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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

  • integration of in-line detonation flame arrester and pressure relief valve in one device
  • excellent tightness of the valve
  • can be used as a detonation-proof valve in suction lines of storage tanks
  • optimal use as an overflow valve in venting and gas supply lines
  • low number of FLAMEFILTER® discs due to shock absorber technology
  • quick removal and installation of the complete PROTEGO® flame arrester unit and the individual FLAMEFILTER® in the casing
  • provides protection against deflagration and stable detonation
  • advanced design for higher operating temperatures and pressures
  • cost-effective spare parts

Función y Descripción

PROTEGO® DR/ES-V series uniquely combines the function of an in-line detonation flame arrester with the function of a pressure relief valve in one device. The device protects against deflagration and stable detonation. The weight-loaded pallet type valve (5) integrated in the shock absorber (1) of the in-line detonation flame arrester is designed as a pressure relief valve. The set pressure 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 increases 40% from its set pressure, the valve completely opens to yield the maximum volumetric flow. If installed in vent headers connected to storage tanks, the valve pallet works as a check valve. This means that the product cannot flow back from the suction line into the tank. Although several functions are integrated in a single housing, 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.

The PROTEGO® flame arrester unit (2) consists of several FLAMEFILTER® discs and spacers firmly held in the FLAMEFILTER® casing (4). The gap size and number of FLAMEFILTER® discs depend on the operating conditions of the flowing mixture (explosion group, pressure, temperature). This device is available for explosion groups from IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).

The standard design is approved for an operating temperature of up to +60°C / 140°F and absolute operating pressure up to 1.2 bar / 17.4 psi. Devices with special approval for higher pressures and temperatures are available upon request.

Type-approved in accordance with the current ATEX Directive and EN ISO 16852, as well as other international standards.

Dimensiones

To select the nominal size (DN), please use the flow capacity charts on the following pages

DN25 / 1"32 / 1¼“40 / 1½“50 / 2“65 / 2½“80 / 3“100 / 4“125 / 5“150 / 6"200 / 8"
a125 / 4.92125 / 4.92153 / 6.02155 / 6.10198 / 7.80200 / 7.87250 / 9.84332 / 13.07335 / 13.19425 / 16.73
b140 / 5.51140 / 5.51183 / 7.20185 / 7.28223 / 8.78225 / 8.86290 / 11.42357 / 14.06360 / 14.17505 / 19.88
c237 / 9.33237 / 9.33305 / 12.01305 / 12.01395 / 15.55395 / 15.55460 / 18.11575 / 22.64575 / 22.64863 / 33.98
c1345 / 13.58345 / 13.58410 / 16.14410 / 16.14530 / 20.87530 / 20.87615 / 24.21790 / 31.10790 / 31.101295 / 50.98
d149 / 5.87149 / 5.87210 / 8.27210 / 8.27275 / 10.83275 / 10.83325 / 12.80460 / 18.11460 / 18.11620 / 24.41
Dimensiones en mm / pulgadas

Selección de materiales para la vivienda

DesignBCD
DesignSteelStainless SteelHastelloy
Heating jacket (DR / ES-V-H-...)SteelStainless SteelStainless Steel
Cover with shock absorberSteelStainless SteelHastelloy
GasketsPTFEPTFEPTFE
Valve seatStainless SteelStainless SteelStainless Steel
Flame arrester unitAC, DE
The housing and the cover with shock absorber can also be delivered in steel with an ECTFE coating. Special materials upon request

Combinación de materiales para la unidad apagallamas

Design ACDE
FLAMEFILTER® cageSteelStainless SteelStainless SteelHastelloy
FLAMEFILTER®*Stainless SteelStainless SteelHastelloyHastelloy
SpacerStainless SteelStainless SteelHastelloyHastelloy
* 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 valve pallet

DesignABC
Pressure rangeIIIIII
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 palletAluminiumStainless SteelStainless Steel
SealingFEPFEPMetal to Metal

Selección del grupo de explosión

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
Special approvals upon request

Selección de la máxima presión de operación

Expl. Gr.DN25 /  1"32 / 1¼"40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"
IIAPmax4,0 / 58.04,0 / 58.04,0 / 58.04,0 / 58.02,9 / 42.12,9 / 42.12,0 / 29.02,0 / 29.02,0 / 29.01,2 / 17.4
IIB3Pmax3,0 / 43.53,0 / 43.52,0 / 29.02,0 / 29.02,0 / 29.02,0 / 29.01,5 / 21.71,4 / 20.31,4 / 20.31,1 / 15.9
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request

Especificación de la máx. temperatura de operación

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation
higher operating temperatures upon request

Tipo de bridas de conexión

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.
other connections upon request

Modelo y especificación

There are two different designs available:

Basic version of the detonation arrester with check valve

DR/ES- V - –

Detonation arrester with check valve and heating jacket

DR/ES- V - H

Set pressure

Pressure: +2.0 mbar +35 mbar
+0.8 inch W.C. +14 inch W.C.
Higher or lower settings upon request

Diagrama de flujo volumétrico

Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.