RUBBER EXPANSION JOINT TYPE AS-2, AS-4
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RUBBER EXPANSION JOINT TYPE AS-2, AS-4 FLAME-PROOF LATERAL EXPANSION JOINT DN 25 – DN 400 STRUCTURE TYPE AS-2, AS-4 / RUBBER BELLOWS PN 16 Type AS-2: Lateral expansion joint consisting of a rubber bellows with rotable flanges and tie rods (external restraints) to absorb reaction force from internal pressure Type AS-4: Lateral expansion joint consisting of a rubber bellows with rotable flanges and tie rods (external and internal restraints) to absorb reaction force from internal pressure or vacuum Highly elastic molded bellows in various rubber grades Steel wire cord reinforcement Wire-reinforced self-sealing rubber rim Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30) Rubber grade* Hot water, acids, lyes hydrocarbon containing liquids Colour code Possible uses *Check or inquire about the resistance of the rubber grade to temperature and medium Technical design Max. perm. operating pressure Bursting pressure Vacuum operation DN 32 – 50 without vacuum supporting ring, DN 65 – 400 with vacuum supporting ring Max. operating pressure to be set 30 % lower for shock loads. *Please consider a decrease of pressure due to temperature (see technical annex). FLANGES / VERSIONS Flanges with stabilizing collar and ears to carry the tie rods Flange drilling for through bolts, DN 25 with Drill holes Special machined groove for rubber rim Standard ANSI, BS etc. Connection dimensions see technical annex page 213 – 215 hot-dip galvanized, special varnish, special coating, etc. NOTE Subject to technical alterations and deviations resulting from the manufacturing process. Chemicals used for water treatment (particularly in heating systems and coolant systems) can corrode the materials of the rubber expansion joint. According to VDI Directive 2035, DIN 4809 part 1 and VGB R 455P, the manufacturer of the chemicals must state that the materials used in the expansion joint, especially for the rubber bellows, will not be damaged by the chemicals. APPLICATIONS for reducing thermal and mechanical tension in pipes and their system components, e.g pumps compressors engines for muffling vibration and noise at appliances n cooling water and lub oil pipes i for compensating lateral movement to compensate for installation inaccuracies to meet fire protection regulations shipbuilding industry in heating plants TIE ROD RESTRAINTS DN 25 – DN 150 Tie rods carried on silencing rubber sockets DN 175 – DN 400 Tie rods carried on spherical washers and conical seats Materials Standard: tie rods 8.8 Others: stainless steel Corrosion protecti

DIMENSIONS STANDARD PROGRAM PresØ di ØC ØE Ø W* PN ØD b H sure Bellows Raised Raised ConFlange Flange Flange Flange face volution connec- outer thick- height rate face inner ness outer Ø inner Ø Ø Ø tion Ø mm bar mm mm mm mm EN 1902 mm mm mm CE (PED 2014/68/EU) American Bureau of Shipping Bureau Veritas M ED DNV GL® / DNV ® Lloyd’s Register of Shipping TÜV/DIN 4809 TÜV Süd (KTA) Others see technical annex Vacuum supporting ring Internal guide sleeve Protective hood Protective tube *unpressurized. From DN 200 higher pressure rate available on request. Please contact us for further flange...