D-SVL-EB-IIA

Pressure Relief Valve deflagration- and endurance burning-proof

Features

10% Technology
for Minimum Pressure Increase up to Full Lift
Extreme Tightness
Resulting in Lowest Possible Product Losses and Reduced Environmental Pollution
Optimal Pressure Maintenance
Set Pressure Close to Opening Pressure for Optimum Pressure Maintenance in the System
Guided Valve Pallet
Valve Pallet Is Guided Inside the Housing to Protect Against Harsh Weather Conditions
Protective System According to ATEX
can Be Used as a Protective System in Areas With Potentially Explosive Atmosphere in Accordance With ATEX
Safety Against Endurance Burning
Protection against Atmospheric Deflagration and Endurance Burning
Intergrated Flame Arrester
Integrated PROTEGO® Flame Arrester Unit Saves Space and Weight and Reduces Costs
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Function and Description

Highly Developed Pressure Relief Valve

The Deflagration-Proof and Endurance-Burning-Proof D-SVL-EB Type PROTEGO® valve is a highly developed pressure relief valve Válvula de presión excesiva Valve designed to open and relieve excess pressure and to reclose and prevent the further flow of fluid after normal conditions have been restored. for large flows with an integrated Flame Arrester Apagallamas 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. PROTEGO® EB. It is primarily used as a device Bastidor 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. for flame transmission-proof Flame transmission-proof Characteristic of a device to avoid flashback. out-breathing on tanks, containers, and process equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. . The valve offers reliable protection against excess pressure and prevents product Product Includes equipment, protective systems, devices, components and combinations of these. losses almost up to the set pressure Presión de reacción Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions. ; while at the same time protecting against atmospheric deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). and endurance burning Endurance burning Stabilized burning for an unlimited time. if stabilized burning Stabilized burning Steady burning of a flame stabilized at, or close to the flame arrester element. occurs.

10%-Technology

The PROTEGO® Flame Arrester Unit is designed to achieve minimum pressure drop with maximum safety. PROTEGO® D-SVL-EB valves are available for substances for substances of explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group IIA (NEC group D MESG > 0.9 mm). When the set pressure is reached, the valve starts to open and reaches full lift Carrera Lift is the actual travel of the valve pallet from the main valve out of the closed position. within 10% overpressure Presión excesiva Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. . This unique 10% technology enables a set pressure that is only 10% below the maximum allowable working pressure (MAWP) of the tank. After years of development, this typical opening characteristic of a safety relief valve is now also available for the low pressure range.

Advanced Manufacturing Technology

The tank pressure Presión del tanque Tank pressure is the pressure within a tank. is maintained up to the set pressure with a tightness that is above the conventional standards due to our state-of-the-art manufacturing technology. This feature is ensured by the valve seats made of high quality stainless steel and with individually lapped valve pallets (1), or with an air cushion seal Sello A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. (2), in conjunction with a high quality FEP diaphragm Membrana A diaphragm is a thin layer of material, which has a large surface area. . The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky substances are used and to enable the use in corrosive fluids. After the overpressure is released, the valve re-seats and provides a tight seal.

Main Component – PROTEGO® Flame Arrester Unit

If the set pressure is exceeded, explosive gas/product vapor/air mixtures are released into the atmosphere. If this mixture ignites, the integrated Flame Arrester PROTEGO® EB (3) prevents flame transmission into the tank. If additional mixture continues to flow and stabilized burning occurs, the integrated Flame Arrester Unit prevents flashback Flashback Phenomenon occurring in a flammable mixture of air and gas when the local velocity of the combustible mixture becomes less than the flame velocity, causing the flame to travel back to the point of mixture. as a result of endurance burning. The valve is protected and also fulfils its function under these severe conditions. The spring Amortiguador A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loaded weather hood Cubierta de protección contra la intemperie A weather hood is a cover to protect the internal components of a device from environmental influences. opens as soon as the melting element Elemento fusible The melting element is a component that consists of a housing with a lower and upper part. (4) melts.

Many Individual Certifications

The valve can be used up to an operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. of up to +60°C / 140°F and meets the requirements of European Tank Design Standard EN 14015 – Appendix L and ISO 28300 (API 2000). EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data

Dimensions

DNDN2abcde
150 / 6“ 400 / 16“ 705 / 27.76 754 / 29.68 802 / 31.57 1500 / 59.06 109 / 4.29
200 / 8“ 400 / 16“ 705 / 27.76 846 / 33.31 802 / 31.57 1500 / 59.06 109 / 4.29

Dimensions in mm / inches

Dimensions for Pressure Relief Valve with heating jacket upon request

Selection of explosion group

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

Special approvals upon request

Material selection for housing

Design   BC
HousingSteelStainless Steel
Heating jacket (D-SVL-EB-H-...)Steel Stainless Steel
Valve seat Stainless Steel Stainless Steel
SpacerPTFEPTFE
Flange ring Steel Stainless Steel
Weather hood Steel Stainless Steel
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. AA, B

Special materials upon request

Material combinations of flame arrester unit

Design   AB
FLAMEFILTER® cageSteel Stainless Steel
FLAMEFILTER® Stainless Steel Stainless Steel
Safety bar Stainless Steel Stainless Steel

Special materials upon request

Material selection for valve pallet

Design ABCDEF
Pressure range [mbar]
[inch W.C.]
+2.0 up to +3.5
+0.8 up to +1.4
>+3.5 up to +14
>+1.4 up to +5.6
>+14 up to +35
>+5.6 up to +14
>+35 up to +60
>+14 up to +24
>+14 up to +35
>+5.6 up to +14
>+35 up to +60
>+14 up to +24
Valve palletAluminium Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel
SealingFEPFEP Metal to Metal Metal to MetalPTFEPTFE

Flange connection type

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

other types 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”.

Detail X

Einzelheit X

Applications

Tank Storage

Chemical and Pharmaceutical Processing Facilities

Renewable Energy

Vapor Treatment

Contact CSR Department 

Picture of Auris-Nadine Hillen
Auris-Nadine Hillen

CSR Department

+49 (0)5307 809 108