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Test Report

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Headquarters: lrtlunichTrade Register Munich HRB 96 869VAT lD No. DE129'184218|nformation pusuantto Seďon 2(1)DL-lnfoV (Germany)atrwrw.fu ev-su ed.com/imp rint

Ghamr,sr&in:*dilm|ltp;]

1629504Di Lella

EagleBurgmann Germany GmbH & Co.AuBere Sauerlacher-Str. 6 - 10,82515 Wolfratshausen

KG

23 February 2011

Gerhard Schlpp

lnspection of a valve stem packing set in ashut-off valve of the 2E-5 seraes to verifycompliance with a specific leakage rate inaccordance with the TA-Luft standard, Section5.2.6.4,VDl 2440, November 2000 edition,Section 3.3. 1 .3 or VDI 3479, May 2002 edition,Section 3.4.2.

EagleBurgmann BuraTAL@ T3 9650/T3

Date: 2011-03-17

Our reference:lS-ATASMUC/dil-ko

Document:Burgmann-as- 1 629504T4 LuflVentilspindeldichtung-en.docx

Report No. 1 629504

This document consists of7 Pages.Page 1 of7

Excerpb tom his document mayonly be eprcduced and used fordvertising purposes witr theexpress writbn 4prova| ďrŮv sÚo lndustie Service GmbH.

The test results refer exclusivelyto the units under test.

Superuisory Board:Karsten Xander (Chairman)Board ofl anagement:Ferdinand Neuwieser (CEO),Dr. Ulrich Klotz, Thomas Kainz

Phone: +49 89 5190-3228Fax: +49 89 5190-3100www.tuev-sued.delis

TŮV sÚD |ndustie Service GmbHGes áflsfe|dAn|agentechnikWestendsfasse 19980686 MunichGermany

lÍd $*níiog

TUV@

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í. Procedure and purpose

Eag|eBurgmann Germany GmbH & Co. KG, Wolfratshausen, commissioned TÚV sÚD !ndustrie

Service GmbH, lnstitute for Plastics, to test a valve stem packing set in a shut-off valve of the

2E-5 series to verify its compliance with a specific leakage rate of the TA-Luft standard,

Section 5.2.6.4,VDl 2440, November 2000 edition, Section 3.3.1.3 or VDI 3479, May 2002

edition, Section 3.4.2

EagleBurgmann BuraTAL@ T3'gOSOnS

Other applicable documents:

TA-Luft standard, Section 5.2.6.4

VDI 2440, November 2000 edition, Section 3.3.1.3

VDI 3479, November 2002 edition, Section 3.4.2

EagleBurgmann Germany GmbH & Co. KG / data sheet

The data sheet of the valve stem packing set EagleBurgmann BuraTAL@ T3 9650/T3 has been

submitted to the test body.

The test requirements are listed below:

Measurement of the actual gas leakage rates to the atmosphere occurring under different

service conditions (practice relevance) in the packing sets

Assessment of the measured gas leakage rates for compliance with the TA-Luft standard

based on the above testing principles

The purpose and objective of the iest is to assess the defined criteria to ensure a constantly low

leakage rate in ongoing operation in accordance with the leakage rate of < 1 x 10-a mbar*l/(m*s)

defined in VDI 2440.

Industie Service

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2. General requirements defined in the TA-Luft standard for shut-off and control devices

ln VDI 2440, Section 3.3.1.3, the TA-Luft standard defines the following requirements forthe

design of shut-off and control devices.

The requirements refer to applications involving the use of liquid organic substances or sub-

stance mixtures with certain proportions of toxic substances.

One measure specified to ensure'leak tightness is to design the sealing systems as metal

bellows with downstream safety gland. Other sealing systems are also permissible under the

TA-Luft standard provided they are of equivalent quality.

The TA Luft standard, however, contains no information about other permissible types or about

the criteria which may be used to decide whether a certain valve is acceptable or not.

ln light of the above, TUV SUD lndustrie Service GmbH, lnstitute for Plastics, developed the

above test standard.

ln its letter oÍ 24 March 1995, reference number Ill 2.6, the Federal Environment Agency

approved this test standard.

3. Test proqramme

ln co-operation with EagleBurgmann GmbH & Co. KG, Wolfratshausen, the Institute for Plas-

tics developed a test programme which caters to the requirements of the TA-Luft standard in

terms of the above testing principles and the service conditions of the shut-off and control

devices.

The test programme covers the following aspects:

Verification of compliance with the required leakage rate of 10-a mbar*l/(m*s) measured by

means of a helium mass spectrometer at the sealing system at service conditions.

Indusbie Service

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Test parameters:

Testing was carried out in accordance with the above parameters.

Photos of the tests carried out at the lnstitute for Plastics in Munich:

Photo 1: Assembly of test specimen Photo 2: Testing

',.

Indusbie Servim

Owing to the design of the valve and the

carraed out in accordance with the above

sizes:

DN 125 PN 40

structure of the packing set outlined above, testing was

provisions on a specamen valve of the following nomlnal

Test gas Loadcycles

Temperatureranse

Test pressure Testtemperature

Valve stem packingset in a shut off valveof the 2E-5 series withthe following sealingstructure:EagleBurgmannBuraTAL@ T3 9650/T3

Hel ium 190 0-40"c

Pressure differenceof 40 bar throughoutthe test (the pressureis applied at the startof each load cycle)

Roomtemperature

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4. Description of valve and/or valve stem packinq

Casing made from special materialsSpecified structure of the packing set

Testing of the packing set EagleBurgmann BuraTAL@ T3 9650/T3:

for liquid and gaseous substancesfor its resistance to chemicals as specified in the data sheet

5. Test process and results

The test process and the test results are outlined below.

ln addition, we evaluated the individual test results.

Leakage measurement (Number 2 oÍ test programme)

Measuring of leakage rate as per VDa2440 /Dl 3479 using a helium mass spectrometer:

Test description:

The leakage rate measured with the help of a mass spectrometer is proportionate to the helium

concentration in the test room. A suitable procedure is selected to adjust this concentration.

For this purpose, helium is applied to a sealed valve until the service pressure is reached and the

valve then filled several times.

The leakage rate is determined for the first time before and then continuously during the defined

duty cycles.

Following the defined number of duty cycles, the valve is heated up to the defined servlce tem-

perature !

Once the valve has cooled down to room temperature, the leakage rate is determined again.

Steps must be taken to ensure that internal helium pressure levels are maintained throughout the

entire measuring period. A conservative, i.e. linear approach is applied to extrapolate or convert

the measured leakage rate.

The valve complies with the TA Luft standard if the leakage rate is 1 x < 10-a mbar*l/(m"s).

lndusbie Service

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Result:

The measurement was conducted with a helium mass spectrometer at the above conditions.

The measured values must be assumed to be higher than the actual vatues as evacuation didnot take place directly at the sealing system, so that in view of the time passed and the fact thathelium is inert, the measured teakage may be higher than the actual leakage rate.

Measurement of the leakage rate revealed that the values measured in accordance with the testprogramme comply with the requirements.

6. Summarv and evaluation

Eag|eBurgmann Germany GmbH & Co. KG, Wo|fratshausen, commissioned TÚV sÚD tndustrieService GmbH, Institute for Plastics, to test a vatve stem packing set in a shut-off vatve of the28 5 series to verify that the vatve complies with a specific leakage rate as per the TA-Luftstandard Section 5.2.6.4,VD1 2440, November 2000 edition, Section 3.3.1.3 or VDI 3479,May 2OO2 edition, Section 3.4.2

EagleBurgmann BuraTAL@ tg 96S0/T3

Other applicable documents :

TA-Luft standard as per Section 5.2.6.4vDl 2440, November 2000 edition, as per section 3.3.1.3vDl 3479, November 2002 editio , as per section 3.4.2EagleBurgmann Germany GmbH & co. KG / data sheet

lndusÍie Service

Testgas

Loadcycles

Tem-peraturerange

Test pressureLeakage rate< í04 mbať

l{m*s}

ReguirementcompliedwithÍnotcomplied

withValve stem packingset in a shut-off valveof the 2E-5 series ofthe following type:EagleBurgmannBuraTAL@ T3 96so/T3

Hel ium 190 0-40"c

40 bar pressuredifference

throughout thetest (the pressureis applied at the

start of eachload cycle)

Before and after1 90 LCs and

during the testprogramme< 6.9 x 10-6mbar*l/(m*s)

fulfilled

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The test requirements are listed below:

Measurement of the actua! gas leakage rates to the atmosphere occurring under different

service conditions (practice relevance) in the packing sets

Assessment of the measured gas leakage rates for compliance with TA-Luft based on the

above testing principles

The purpose and objective of the test is to assess the defined criteria to ensure a constantly low

leakage rate in ongoing operation in accordancewith the leakage rate of < 1 x 10-a mbar*l/(m*s)

defined in VDI 2440.

ln summary, testing in accordance with the above test principles provided the following results

for the valve-stem gasket in a shut-off valve of the 2E-5 series with the following packing-set

structures:

EagleBurgmann BuraTAL@ T3 9650/T3

Evaluation of the leakage rate revealed that the values measured in accordance with the test

programme complied with the requirements.

In our opinion, the design and assembly documents meet the requirements.

ln our opinion, at the above test conditions the design of the above valve is equivalent with the

leakage criterion of the TA-Luft standard, Section 5.2.6.4,VDl 2440, November 2000 edition,

Section 3.3.1.3 orVDl 3479, May 2002 edition, Section 3.4.2.

lnstitute for Plastics

Indusbie Service

i . A. Sch