CENTRATOR -BG MANUAL OPERATION INTERNALALIGNMENT & PURGE GAS EQUIPMENT FORTig ,PIPE_WELDING

PETROCHEMICALNUCLEARAEROSPACEFOOD & BREWERYPROCESS INDUSTRIES

Operation :-By turning the central actuating handle, two sets ofconical fingers are drawn together forcing thebacking ring segments radially into the bores of thepipes to be aligned.Strong clamping forces hold the pipes firmly in closeabutment permitting welding to take place withoutthe need for tacking.Pipes with wall thickness upto 5% of pipe diameterare rounded and pipes upto 12 Metres in length canbe welded by adding standard extensions.

Backing Ring Segments:-Standard replaceable backing ring segments aremade of stainless steel -

Gas Purging:-Argon or Helium purging gas isfed into the purge gasmanifold and distributed through gas pipes to eachindividual segment.Purge gas is concentrated at the underside of theweld, purging is rapid and welding can startimmediately. *Low gas flow rate and pressure avoids blow back and 1-2 lit/min is sufficient to provide shielding.*(per inch of pipe dia)

Ref No 11.

SPECIFICATION :-

\HEAD ASSEMBLY

WHEELED SUPPORT SPIDER

EXTENSION ASSEMBLY

I~ ~---------~----------~

= __ ..r'~--------- ----------- --

CENTRATOR-BG HEAD UNIT COMPLETE ACTUATOR ASSEMBLY EXTENSION ASSEMBLYWHEELED

SIZE OPERATING MINIMUM 0.5Met 1.0Met 2.0Met 1.0Met 2.0Met 4.0Met SUPPORTmm RANGE mm DIA.mm LONG LONG LONG LONG LONG LONG SPIDER

34 34- 37 32 WSP3437 37- 40 35 SAC1505 SAC1510 SAC1520 EXT1510 EXT1520 EXT1540 WSP3740 40- 44 3844 44- 48 42 WSP40

WSP44 ,

48 48- 53 45 WSP4853 53- 58 50 SAC1805 SAC1810 SAC1820 EXT1810 EXT1820 EXT1840 WSP5358 58- 64 55 WSP5864 64- 70 61 WSP64

70 70- 77 67 WSP7077 77- 85 74 WSP7785 85- 93 81 SAC2405 SAC2410 SAC2420 EXT2410 EXT2420 EXT2440 WSP8593 93-102 89 WSP93 i

WSP102\

102 102-112 98 WSP112112 112-123 108 SAC3205 SAC3210 SAC3220 EXT3210 EXT3220 EXT3240 WSP123123 123-135 119135 135-148 130 WSP135

WSP148148 148-162 143 WSP162162 162-178 157 WSP178178 178-195 172 SAC4005 SAC4010 SAC4020 EXT4010 EXT4020 EXT4040 WSP195195 195-214 190 WSP214214 214-235 208

WSP235235 235-258 229WSP258

258 258-283 251 WSP283283 283-311 276 SAC4805 SAC4810 SAC4820 EXT4810 EXT4820 EXT4840 WSP311311 311-342 304 WSP342342 342-376 335

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CENTRATOR UK LTDUNIT A, ALBION ROADSILEBYLEICESTERSHIRELE12 7RAENGLANDTelephone: +44 (0)1509 814626www.centrator.com

Pipes within the 10% Operating Range are Welded. Additionalcollapse to Minimum Diameter is provided to enable Head Unit to bewithdrawn past penetration.

Conical fingers act independently ensuring pipes with different boresare acccurately aligned.

Agent

Fax: +44 (0)1509 814626