RUBBER EXPANSION JOINT TYPE A-2, A-4 Please comply with the general technical instructions regarding reaction force, moving force, fixed point load, installation instructions etc. Subject to technical alterations and deviations resulting from the manufacturing process. LATERAL EXPANSION JOINT DN 20 – DN 1000 STRUCTURE TYPE A-2, A-4 / RUBBER BELLOWS PN 16 Type A-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 A-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 Synthetic fibre reinforcement Wire-reinforced self-sealing rubber rim Electrical impedance 103 to 106 Ohm (DIN IEC 93, VDE 0303-30 Rubber grade* Colour code Hot water, acids, lyes hydrocarbon containing liquids Drinking water Possible uses *Check or inquire about the resistance of the rubber grade to temperature and medium APPLICATIONS for reducing thermal and mechanical tension in pipes and their system components, e.g. pumps compressors engines for muffling vibration and noise for compensating lateral movement to compensate for installation inaccuracies to compensate for ground and foundation settlement or tank settlement during filling Max. operating pressure to be set 30 % lower for shock loads. *Please consider a decrease of pressure due to temperature (see technical annex). DN 20 – DN 150 Tie rods carried on silencing rubber sockets DN 175 – DN 1000 Tie rods carried on spherical washers and conical seats Materials Standard: tie rods 8.8 Others: stainless steel Corrosion protection Standard: electrogalvanized Others: hot-dip galvanized FLANGES / VERSIONS Technical design Max. perm. operating pressure Bursting pressure Vacuum operation DN 20 – 50 without vacuum supporting ring, DN 65 – 1000 with vacuum supporting ring Flanges with stabilizing collar and ears to carry the tie rods Flange drilling for through bolts Special machined groove for rubber rim Standard ANSI, BS etc. Connection dimensions see technical annex page 213 – 215 Corrosion protection special varnish, special coating, etc. CE (PED 2014/68/EU) Bureau Veritas DNV GL® / DNV ® Lloyd’s Regi

DIMENSIONS STANDARD PROGRAM DN BL* PresØD Ø di ØC Ø E Ø W** PN b H sure Bellows Raised face Raised face Convolu- Flange Flange Flange Flange outer Ø inner Ø rate inner Ø tion Ø connection outer Ø thickness height mm bar mm mm mm mm mm EN 1902 mm mm 100 100 125 150 125 150 125 150 125 150 150 150 150 150 150 150 175 175 200 200 200 200 250 250 250 275 275 300 300 Vacuum supporting ring Internal guide sleeve Flame-proof protective cover Protective hood Protective tube Type A-2 Tie rods, external restraints, carried on silencing rubber sockets *DN 32 to DN 300 also available in BL 130 mm as Type...