LDA-W

In-Line Liquid Detonation Flame Arresterfor filling lines - external installation

Features

Meets TRGS Requirements
TRGS = technical regulations for hazardous substances
Low Risk
low risk of fouling
Low Pressure Loss
For Flammable Liquids
useable for nearly all flammable liquids
Function and Description

Reduction of Flame Propagation Speed

When a highly accelerated pipe deflagration or detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997). occurs, the combustion pressure and flame propagation speed are substantially reduced by the design and converted into a low-energy deflagration that is then stopped by the remaining immersion liquid.

For Explosion groups IIA to IIB3

The application range for the device is a product vapor / air mixture temperature of up to +60°C / 140°F and an absolute pressure of up to 1.1 bar / 15.9 psi. This covers all possible operating conditions of empty lines for flammable liquids. The liquid detonation arrester is designed for pressures of up to 10 bar / 145 psi, resists explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. pressure, and provides protection for almost all flammable liquids. The device is approved for explosion groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).

Many Individual Certifications

Special designs with a cleaning cover for highly viscous and contaminated liquids are available. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data and Features

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 chart on the following pages

DN25 / 1"32 / 1¼“40 / 1½“50 / 2"65 / 2½“80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
a250 / 9.84275 / 10.83350 / 13.78350 / 13.78450 / 17.72450 / 17.72500 / 19.69600 / 23.62600 / 23.62700 / 27.56850 / 33.461000 / 39.37
b325 / 12.80360 / 14.17420 / 16.54420 / 16.54540 / 21.26540 / 21.26595 / 23.43915 / 36.02915 / 36.021100 / 43.311325 / 52.171480 / 58.27
c445 / 17.52480 / 18.90565 / 22.24565 / 22.24720 / 28.35720 / 28.35800 / 31.501265 / 49.801265 / 49.801520 / 59.841830 / 72.052050 / 80.71
d140 / 5.51140 / 5.51195 / 7.68195 / 7.68275 / 10.83275 / 10.83325 / 12.80460 / 18.11460 / 18.11510 / 20.08610 / 24.02700 / 27.56

Dimensions in mm / inches

Selection of explosion group

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

Special approvals upon request

Specification of max. operating temperature

higher operating temperatures upon request

Flange connection type

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

other connections upon request

Flow Capacity Chart

The volume flow V in m³/h was determined with water according to DIN EN 60534 at a temperature Tn = 20°C and an atmospheric pressure pn = 1,013 bar, kinematic viscosity v = 10-6 m²/s

Applications

Floating-Roof Storage Tanks

Processing Facilities

Vapor Combustion Systems

Contact CSR Department 

If you have any questions, feedback, or additional input, our team of experts will be glad to support you.

Picture of Mrs. Auris-Nadine Hillen
Mrs. Auris-Nadine Hillen

CSR Department

+49 (0)5307 809 108