LDA-WF(W)

Name: LDA-WF(W)
Brand: PROTEGO
SKU: product3288154620899

In-Line Liquid Detonation Flame Arrester for filling and drain lines - external installation

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Features

Siphon Protection

Offers Increased Safety

Low Risk

Low Risk of Fouling

Low Pressure Loss

Explosion Safety

Provides Protection Against Deflagration and Stable Detonation

For Flammable Liquids

Useable for Nearly All Flammable Liquids

Meets TRGS Requirements

TRGS = Technical Regulations for Hazardous Substances

Function and Description

Main Component – PROTEGO® Flame Arrester Unit

The PROTEGO® LDA-WF(W) Series of Liquid Detonation Flame Arresters was developed for storage container filling lines that are not continuously filled with product and sometimes contain a combustible mixture. The integrated siphon protection (1) with PROTEGO® Flame Arrester Unit (2) additionally prevents the liquid, in which the lines are immersed, from being siphoned off while the container is being drained. The PROTEGO® Flame Arrester Unit consists of several FLAMEFILTER® discs (3) and spacers firmly held in a FLAMEFILTER® casing (4). The number of FLAMEFILTER® discs and their gap size depends on the arrester’s intended use.

Prevention of Flame Spread in Tank During Ignition

The is installed outside the container in the filling and drain lines. If the explosive atmosphereis ignited, the device prevents the combustion from traveling into the tank. The PROTEGO® LDA-WF(W) Series of Liquid Detonation Flame Arresters combines the classic PROTEGO® Flame Arrester design with the siphon principle in which the liquid product serves as a barrier to flame propagation.

Reduction of Flame Propagation Speed

When a highly accelerated pipe deflagration or detonation occurs, the combustion pressure and flame propagation speed are substantially reduced, converted into a low-energy deflagration, and then stopped by the remaining immersion liquid and the PROTEGO® Flame Arrester.

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 up to 1.1 bar / 15.9 psi. Devices with special approval for higher temperatures are available upon request. This covers all possible operating conditions of empty lines for flammable liquids. The liquid is designed for pressures of up to 10 bar / 145 psi, resists explosion 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). Special designs with a cleaning cover for highly viscous liquids can be provided. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.

Product Data

Dimensions

To select the nominal size Diamètre nominal 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

DN	25 / 1"	32 / 1¼“	40 / 1½“	50 / 2"	65 / 2½“	80 / 3"	100 / 4"	125 / 5"	150 / 6"	200 / 8"	250 / 10"
a	250 / 9.84	250 / 9.84	350 / 13.78	350 / 13.78	450 / 17.72	450 / 17.72	500 / 19.69	600 / 23.62	600 / 23.62	700 / 27.56	900 / 35.43
b	325 / 12.80	325 / 12.80	415 / 16.34	415 / 16.34	535 / 21.06	535 / 21.06	600 / 23.62	915 / 36.02	915 / 36.02	1090 / 42.91	1300 / 51.18
c	475 / 18.70	475 / 18.70	605 / 23.82	605 / 23.82	831 / 32.72	831 / 32.72	936 / 36.58	1340 / 52.76	1340 / 52.76	1520 / 59.84	1750 / 68.90
d	150 / 5.91	150 / 5.91	210 / 8.27	210 / 8.27	275 / 10.83	275 / 10.83	325 / 12.80	460 / 18.11	460 / 18.11	510 / 20.08	610 / 24.02

Dimensions in mm / inches

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

Specification of max. operating temperature

≤ 60°C / 140°F	Tmaximum allowable operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. in °C
-	Designation

higher operating temperatures upon request

Material selection for housing

Design	A	B
Housing	Steel	Stainless Steel
Shock absorber	Steel	Stainless Steel
Gasket ( shock absorber Amortisseur de choc A shock absorber is a device that reduces the kinetic energy of a detonation. )	FPM	PTFE
Gasket (locking screw)	PTFE	PTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set.	A	A

Special materials upon request

Material selection for flame arrester unit

Design	A
FLAMEFILTER^® cage	Stainless Steel
FLAMEFILTER^®*	Stainless Steel
Spacer	Stainless Steel

* the FLAMEFILTER® are also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing Corps A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. and cage materials are used

Special materials 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
To avoid electrostatic charge of flammable liquids the maximum flow is limited (refer to TRGS 727, CENELEC-Report CLC/TR 60079-32-1).