type 55 - belman.com · 25 25 30 30 35 40 40 40 s mm ... 1.080 1.248 192 192 192 186 134 150 148...

construction, shipbuilding and in solar and wind plant engineering. It is especially used to absorb expansion and vibration and to insulate sound.

Bellow designLow-corrugated rubber bellow with reinforcement and shaped sealing bead with core ring, self-sealing (no additional seals required). Suitable for accommodating swiveling flanges.

Approvals/ConformitySimilar to DIN 4809 / TÜV approved, drinking water, shipbuilding approval

FDA and EG 1935/2004 conform

Flange versionBoth sides with swiveling flange made of galvanized steel, with clearance holes, drilled according to DIN PN 10 (standard). Other materials and dimensions are possible.

Type 55 is a low-corrugated, highly elastic rubber expansion joint. Its low corrugation helps to achieve very low flow resistance. It reduces up to 70 % of the incoming energy. It is also characterised by very high movement absorption in all directions and its variety of rubber qualities, which means that a suitable rubber com-pound is available for almost every application (see material descriptions on the following pages). Type 55 is used in building technol-ogy, plant engineering, water and wastewater technology, engine

TYPE 55 WILLBRANDT RUBBER EXPANSION JOINT

SPECIFICATIONS FOR DN 20 - DN 400

Bursting pressure DN 20 - 400 > 48 barDN 300 max. 10 bar working pressure / Bursting pressure >30 bar

BG08/2018 – Subject to alterations and misprints

Red SpRed

YellowGreen

Yellow St

EPDMIIR

NBR CSMNBR

AramidPolyamidePolyamidePolyamideSteel cord

EPDMEPDM

CRCSMCR

-40 10-40 10-20 10-20 10-20 10

70 1650 1650 1650 1660 16

100 10 70 12 70 12 70 12 90 10

130 8100 10 90 10100 10100 10

150120100110100

4 x 103

7 x 106

2 x 102

7 x 109

2 x 102

Bellow Bellow design

Colour code

Colour marking

Permissible operating data

Core

(inner)Reinforce-

mentCover

(outer) °C bar °C bar °C bar °C bar C° [Ohm cm]

Short term

Surface resistance Ro

Core Cover

4 x 103

1 x 103

1 x 103

7 x 109

5 x 1010

1 / 10 www.belman.com

Important informationFor aggressive media, please see the resistance table (can be requested separately). The bellows should not be painted or insulated. Please refer to the installation instructions.We will be happy to send you further information on the individual types and designs.

Vacuum resistance

l DN 20 to 50 vacuum-resistant without additional accessories

l DN 65 to 250 up to -200 mbar without additional accessories

l DN 300 to 1000 not vacuum- resistant without additional accessories

l DN 65 to 1000 vacuum-resistant with vacuum supporting spiral/ring

Accessories

l Guide sleeves

l Potential equalisation

l Flame-resistant protective covers

l Dust and splash protection covers

l Earth cover/sun protection hoods

l Segment tie rods

APPLICATION

Type 55 red SpFor heating installations according to DIN 4809. For many years of opera-tion under constant loading with hot water and heating water at 100 °C/110 °C at 10 bar/6 bar operating pressure. Electrically conductive surface. Not suitable for media with additives containing oil.

Type 55 redFor drinking water, hot water, sea water, cooling water with chemical additives for treating water, saline solutions, weak acids and weak

alkaline solutions. Electrically dissipa-tive inner surface and electrically conductive outer surface. Not suitable for oil products or cooling water with additives containing oil.

Type 55 yellowFor oils, lubricants, fuels, gases, city and natural gas (not liquefied) and DIN EN fuels with an aromatic content up to 50 %. Electrically conductive.

Typ 55 green For chemicals, aggressive chemical wastewater and compressor air containing oil. Electrically insulat-ing. Typ 55 yellow St Like Type 50 yellow with additional flame-resistance for up to 30 minutes at 800 °C. Electrically conductive inner surface, electrically insulating outer surface.


Red SpRed

YellowGreen

EPDMIIR

NBRCSM

AramidPolyamidePolyamidePolyamide

4727

xxxx

103

106

102

109

EPDMEPDM

CRCSM

-40-40-20-20

70505050

100707070

130100

90100

8888

10101010

7,5888

6666

150120100110

Colour code

Colour marking

C°

Permissible operating dataBellow Bellow design

Core

(inner)Reinforce-

mentCover

(outer) °C bar °C bar °C bar °C bar

SPECIFICATIONS FOR DN 450 - DN 1000

Short term

Surface resistance Ro

Core Cover

Bursting pressure DN 20 - 400 > 48 barThe inner core of type 55 red DN 500 and DN 600 is made of EPDM

4117

xxxx

103

103

103

109


[Ohm cm]


Can be used for movement absorption in any direction (for combined movements, see the movement diagram in the technical appendix), noise and vibration insulation.The expansion joint’s reaction force must be absorbed via suitable piping.

DESIGN A - WITHOUT TIE RODS

axial - axial + lateral +/- angular +/-



20253240506580

100125150200250300350400450500600700800900

1000

DN Bellow

ØAmm

WF*1

mm2

*3125*3125*3125*3125*3125*3125150150150150175175200200200250250250

*4275290300300

BL

mm

8181818696

111122142168192252302354420480530580680800880

10381138

1700170017001800320053008500

128001870025900410005960082200

117600154700204200227900311500434200527400737900889400

Flange PN 10*2

ØDmm

105115140150165185200220250285340395445505565615670780895

101511151230

ØPCDmm

7585

100110125145160180210240295350400460515565620725840950

10501160

Ødmm

12141818181818181822222222222626263030333336

n

44444888888

1212161620202024242828

14141515161618181818202022242525303035404040

smm

Movement absorption

+mm

-mm

AX

30303030303030303030303030303030202030303030

30303030303030303030303030505050404050505050

LA+/-mm

30303030303030303030303030303030303030303030

+/-

30303030303030202020121212

888668655

Permissible degree of utilisation for movement areas:up to 50°C - Utilisation ~ 100 %up to 70°C - Utilisation ~ 75 %up to 90°C - Utilisation ~ 60 %

DIMENSIONS FOR DESIGN A

Weight

1,51,93,13,53,75,36,98,09,8

13,217,923,825,038,338,053,761,079,3

127,3161,0196,7234,5

*1 WF = effective area*2 Other standards/dimensions possible.*3 Building lenght 130 mm*4 Buliding lenght 260 mm

Important information Please note the appropriate fixed point constructions and plain bearings in your

piping system! You can find information on this in our installation instructions.We will be happy to send you further

information on the individual types and designs.

ANØCmm

6565657486

105118137166192252304354412470520563675780887985

1085



There is a selection of various length limiters / tie rods to absorb the reaction force and to protect the bellow from overstretching or collapsing:

Design B*with tie rods

Design C*with tie rods/thrust limiters

Design Ewith tie rods and spherical washers/conical sockets

Design Mwith tie rods/thrust limiters with spherical washers/conical sockets

*Note: For Designs B and C the lateral movement absorption is reduced by around 50 %.

Design Fwith hinge

LENGHT LIMITERS



DN

Flange PN 10 (example dimensions)

s

mm

nBL

mm

20253240506580

100125150200250300350400450500600700800900

1000

*1125*11251125

*1125*1125*1125150150150150175175200200200250250250

*2275290300300

14141515161618181818202022242530303035404040

44444888888

1212161620202024242828

B

mm

189205230240255275290310340375440509559619700760810930

1045117512851400

ØD

mm

105115140150165185200220250285340395445505565615670780895

101511151230

ØPCD

mm

7585

100110125145160180210240295350400460515565620725840950

10501160

M

M10M12M16M16M16M16M16M16M16M20M20M20M20M20M24M24M24M28M28M30M30M36

ØC

mm

6065657486

105118137166192252304354412470520570675780887985

1085

FLANGE DIMENSIONS FOR DESIGNS WITH TIE RODS

DN 32 - 200 DN 250 - 900 DN 1000 DN 50 - 1000 (Ausführung F)

*1 Building lenght 130 mm*2 Buliding lenght 260 mm



Warning: Deviations (+/-25 %) in the stiffness rates may occur due to use

of different materials and manufactur-ing processes.

DN BL

mm

Stiffness rates (average value from full way)

0 bar

N/mm

20253240506580

100125150200250300350400450500600700800900

1000

*1125*1125*1125*1125*1125*1125150150150150175175200200200250250250

*2275290300300

31313130252428353649

100105123105154167196208140180200225

AXIAL STIFFNESS RATES

1 bar

N/mm

56565654424348595984

153173206153225269316264179240320355

2,5 bar

N/mm

686868665153587171

102180207248177261320376292198270380420

3 bar

N/mm

888888856769738693

131242267315234346407479425372378483527

5 bar

N/mm

160160160155116125126161176241467499553458526742873908718785885995

6 bar

N/mm

192192192186134150148206214293568609658567535903

1.0601.123

714975

1.0801.248

192192192186134150148206214293568609659567536904

1.0611.124

715976

1.0811.249

10 bar

N/mm

243243243236173190185274282390735778883753

1.0901.1621.3641.441

9541.2581.3951.568

12 bar

N/mm

252252252244179197192284292404762807915781

1.1301.2051.4141.494

636839930

1.045

4 bar

N/mm

8 bar

N/mm

12812812812498

100104116137189365388448349516581686692721594690742

16 bar

N/mm

270270270261192211205304313433816864980836

1.2101.2901.5141.600

----




DN BL

mm

Stiffness rates (average value from full way)

0 bar

N/mm

20253240506580

100125150200250300350400450500600700800900

1000

*1125*1125*1125*1125*1125*1125150150150150175175200200200250250250

*2275290300300

646464625040345397

116304356368305338342426456516558800960

LATERAL STIFFNESS RATES

1 bar

N/mm

10510510510160655974

162206555624647508541540687708798826

1.2531.536

2,5 bar

N/mm

12512512512165787285

194251680758786610642639818834939960

1.4801.824

3 bar

N/mm

145145145140709092

102214267716826858661700700895910

1.023992

1.6482.003

5 bar

N/mm

21221221220593

133141150269326840

1.0321.072

819882896

1.1261.1791.3201.3062.1162.549

6 bar

N/mm

240240240233105150151162284354893

1.1031.142

875946971

1.2041.2951.4491.5572.2482.736

249249249242124156158172324398

1.0091.2331.280

9761.0611.0741.3351.4251.5941.6402.3782.826

10 bar

N/mm

259259259251142162165181364441

1.1241.3631.4191.0761.1751.1761.4651.5541.7401.7232.5092.916

12 bar

N/mm

260260260252143163166183367444

1.1321.3731.4281.0831.1831.1841.4751.5651.1601.1491.6731.944

4 bar

N/mm

8 bar

N/mm

18418418417880

115132138253299787961

1.003762817821

1.0481.0621.1911.0551.9842.361

16 bar

N/mm

264264264256145165168185372450

1.1471.3911.4481.0981.1991.2001.4951.586

----






DN BL

mm

Stiffness torque (average value from full way)

0 bar

N/mm

20253240506580

100125150200250300350400450500600700800900

1000

*1125*1125*1125*1125*1125*1125

150150150150175175200200200250250250

*2275290300300

0,20,20,20,30,30,40,61,02,03,0

11,018,029,034,065,0

114,0162,0241,0167,0277,0386,0531,0

ANGULAR STIFFNESS TORQUE

2,5 bar

N/mm

0,50,50,50,60,60,91,32,03,07,0

20,035,058,057,0

110,0218,0311,0340,0237,0416,0733,0991,0

4 bar

N/mm

0,90,90,91,11,11,72,34,06,0

12,041,065,0

105,0113,0218,0396,0568,0804,0861,0914,0

1330,01751,0

6 bar

N/mm

1,31,31,31,61,62,53,37,0

10,019,063,0

102,0154,0183,0226,0615,0877,0

1305,0853,0

1501,02082,02945,0

10 bar

N/mm

1,71,71,72,02,03,24,19,0

13,025,082,0

130,0206,0244,0460,0792,0

1128,01674,01140,01937,02689,03700,0

16 bar

N/mm

1,91,91,92,32,23,64,6

10,015,028,091,0

144,0229,0270,0511,0676,0

1069,01588,01265,02150,02985,04107,0






DN BL

mm

for Designs E and MFrictional force

N/bar

20253240506580

100125150200250300350400450500600700800900

1000

*1125*1125*1125*1125*1125*1125150150150150175175200200200250250250

*2275290300300

7778

1220304465

102124180218120160226212507602814921

1130

FRICTIONAL FORCE

Nm/bar

0,20,20,20,20,30,51,01,42,14,46,2

11,215,417,022,940,563,5

138,5180,9326,2402,4617,3

for DesignFFrictional force





type 55 - belman.com · 25 25 30 30 35 40 40 40 s mm ... 1.080 1.248 192 192 192 186 134 150 148...

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