DR/ES-V

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

Función y Descripción

PROTEGO® DR/ES-V series uniquely combines the function of a 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 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 check valve. This means that the product can not 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 classic 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 independent of the valve pallet position.

The PROTEGO® flame arrester unit (2) consists of several FLAMEFILTER® discs and spacers firmly held in the FLAMEFILTER ® cage (4). The gap size and number of FLAMEFILTER® discs are determined by the operating data parameters of the mixture flowing in the line (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 at an operating temperature up to +60°C / 140°F and absolute operating pressure up to 1.2 bar / 17.4 psi. Devices with special approvals can be obtained for higher pressures and higher temperatures upon request.

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

Características especiales y ventajas

  • integration of in-line detonation flame arrester and pressure relief valve in one device
  • excellent tightness of the valve
  • applicable as a detonation-proof check valve in suction lines of storage tanks
  • optimum for use as an overflow valve in venting and recovering vapour lines
  • minimum number of FLAMEFILTER® discs due to the effective shock absorber
  • quick removal and installation of the complete PROTEGO® flame arrester unit and the individual FLAMEFILTER® discs in the cage
  • provides protection from defl agration and stable detonations
  • extended application range for higher operating temperatures and pressures
  • cost efficient spare parts
DR/ES-V
DR/ES-V

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

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
DR/ES-V

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”.

DR/ES-V
DR/ES-V