the bunsen nozzles

Loesche ThermoProzess GmbH • Uechtingstraße 19 / Gebäude D9 • D-45881 GelsenkirchenTel. +49 - 209 - 36 17 22 - 0 • Fax: +49 - 209 - 36 17 22 - 180Email: info@loesche-tp.de • Internet: www.loesche-tp.de

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The Bunsen nozzlesWhen it comes to low-pressure, small gas burners, Bunsen nozzles have advanced signi�cantly:

• althoughsmallindesign,theiroutputisveryhigh

•theyaretoleranttoimpactandinsensitivetocondensate

•theyaremadeofsteelandthusarehighlyreliable(SEP nozzles are also available in brass)

•thelargecross-sectionoftheexitboresmakesclogging almost impossible

•theyareblow-backproof

Bunsennozzlesareperfectlysuitedforbottomtotopbur-ningoftheflame.Forcompletecombustiontotakeplace,they require not only primary air but also require secon-daryair thatmustbesupplied to theflamefrombelow.Dependingonthesizeoftheheatedsurface,theremustbesufficientspacebelowtheburnerforthesupplyofthecombustion air. The installation of a flow safety deviceaccordingtoTRVisnecessary,iftheexhaustgasesarechanneledintoachimneystack.

Inordertodimensionthenozzleboreforgasmixtures,werequire the upper calori�c value and the gas pressure, as wellastheexactcomposition.Underconsiderationofthe

spacings listed in the table, the Bunsen nozzles can be assembled based on the requirements into longitudinal, ringandstar formationsor anyother configuration.Weproduce standard low-pressure burners in a variety of designs;pleaseaskfortherespectivebrochures.

Amongst other things, the Bunsen nozzles described hereareusedforthefollowingapplications:

•Low-pressurestar-typeburners•Low-pressureringburners

We plan, manufacture and deliver complete heatingequipmentfortheentireindustry.Pleaseaskforadditional documentation.

SEP nozzles Bunsen M-P nozzles Sz-Mz-Pz nozzles Sz nozzles

Low-pressure star-type burners Low-pressure ring burners

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Loesche ThermoProzess GmbH • Uechtingstraße 19 / Gebäude D9 • D-45881 GelsenkirchenTel. +49 - 209 - 36 17 22 - 0 • Fax: +49 - 209 - 36 17 22 - 180Email: info@loesche-tp.de • Internet: www.loesche-tp.de

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Bunsen all-gas nozzles SEPTheBunsenall-gasnozzletypeSEPmaketheconversiontonaturalgaseasy.Inordertoconvertfromcitygas(gridgas)tonaturalgas,asmallnozzleinsertmustbeinstalled.It can be simply screwed into the burner's shaft. The flame is very stable, which is achieved by a flame-re-tainingringthatbranchesofffromthemainmixture'sflowbeneaththemainflame.Thestrengthoftheflamecanbemodifiedandsettoavarietyoflimitsbysimplyreplacingthenozzleinsert.Thewide-rangingflamesmaketheoverignition from nozzle to nozzle easier and at the same time promote a uniform secondary air supply through the combus-tion chamber. Con-version to liquid gas and all other common gas/air mixtures areeasy. When using liquid gas, the shaftand the nozzle insert must be replaced.

Gases with the sameWobbe number (e.g., rich gas andnatural gas) do not require the replacement of this noz-zle insert.Theflamesofbothgasesburnwiththesamestrengthandwithoutanyconversion.Whenusingcitygas(gridgas),naturalgasandliquidgasthestrengthoftheflamecanbeadjustedbychanging theboresizeof thenozzle insert (increments from1.9 to3kW).Thenozzlecanalsobesuppliedfor3.5kWandasaspecialdesignfor4.7kW.However,itisnotavailableforliquidgas.

Bunsen-M-nozzles for natural gas and Bunsen-P- nozzles for liquid gasaresuitableforfiringnaturalgasandnaturalgas/airmix-tures,orliquidgasandliquidgas/airmixtures.

Bunsen Sz, Mz, and Pz nozzles for city, natural and liquid gas arealsosuitableforburninghorizontallydirectedflames.Thisdoesnotapplytonozzleswithstar-shapedflames.Theseburnersareusedinparticularforheatingtheside-wallsofcontainers,whichleavesthebottomofthecon-tainerunheated.

The Bunsen nozzles

Nozzle head

Nozzle cover

Flame-retaining ringNozzle shaft

Mixing channel

Nozzle insertAir intake bore

Type of nozzle

Thermal output kW Gas pressure mbarNozzle height

Diameter or length and width

Nozzle spacing (centre to centre)

Distance upper edge of nozzle from heating surface

City gas Natural gas Liquid gas City gas Natural gas Liquid gas mm mm mm mmSEP 1600 1.9 1.9 1.9 6 20 50 57 26 70–80 50–60

SEP 2000 2.3 2.3 2.3 6 20 50 57 26 80–90 60–70

SEP 2600 3.0 3.0 3.0 6 20 50 57 26 80–90 80–90

SE 3000 3.5 3.5 – 6 20 – 57 26 90–100 90–110

SE 4000 4.7 4.7 – 6 20 – 57 26 80–100 100–120

Sz 0,5 1.1 – – 6 – – 62 70 x 26 90 80–90

Sz 1,0 4.2 – – 6 – – 75 100 x 30 120 90–100

P 14 – – 1.7 – – 50 75 32 60–70 50

P 21 – 2.7 – – 50 75 34 70–80 60–70

P 30 – 3.8 – – 50 75 34 80–90 80

Pz 14 – 1.7 – – 50 87 70 x 28 80 50

Pz 21 – 2.7 – – 50 105 100 x 30 110 60

PL 21 – 3.8 – – 10–15 75 34 80–90 80

M 103 – 2.7 – – 10 – 75 32 60–80 60

M 203 – 2.7 – – 20 – 75 32 60–80 60

M 303 – 2.7 – 30 – 75 32 60–80 60

M 503 – 2.7 – – 50 – 75 32 60–80 60

M 104 – 3.8 – – 10 – 75 32 80–90 80

M 204 – 3.8 – – 20 – 75 32 80–90 80

M 304 – 3.8 – – 30 – 75 32 80–90 80

M 504 – 3.8 – – 50 – 75 32 80–90 80

Mz 103 – 2.7 – – 10 – 103 100 x 30 110 110

Mz 203 – 2.7 – – 20 – 103 100 x 30 110 110

Mz 303 – 2.7 – – 30 – 103 100 x 30 110 110

Mz 503 – 2.7 – – 50 – 103 100 x 30 110 110

AllnozzlesuseathreadedconnectionR1/8" Bunsen-nozzlesforallotheroutputsandgaspressuresuponrequest

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