| | NB 50 – NB 1500 Type B130 B140 B150 without vacuum support ringsType B131 B141 B151with internal vacuum support ringsType B132 B142 B152with embedded vacuum support ringsType B133 B143 B153without vacuum support rings,
with pressure support rings in the arch troughType B134 B144 B154with inner vacuum support rings,
with pressure support rings in the arch troughType B135 B145 B155with embedded vacuum support rings,
with pressure support rings in the arch trough  Type
Number of arches
Support ring variant
Application: Power plants, plant construction, food processing, wastewater treatment plants, industrial facilities, e. g. to disconnect pipelines, on oscillating conveyor systems, on sieving machines Universal expansion joint with three or more arches | Design: | Hydrodynamic, triple or multiple arch rubber bellows with sleeve for clamped fixing Optionally with vacuum support rings and/or external pressure support rings in the arch trough | | Nominal diameters: | NB 50 to NB 1500, intermediate sizes possible | | Installation length/arches: | = Installation gap + 2 x fixing width
Installation gaps L0 = 600 with 3 arches, type B130 Typ B130
Installation gaps L0 = 800 with 4 arches, type B140
Installation gaps L0 = 1000 with 5 arches, type B150
Other installation gaps on request | | Fixing width: | Depends on pressure, nominal diameter and clamp design, at least 40 mm | | Pressure: | Depending on the nominal diameter and installation length up to 6 bar. Vacuum not allowed without vacuum support rings, with vacuum support rings up to 0.05 bar absolute | | Movement: | For axial, lateral and angular movements
For axial extension or vacuums, the expansion joint can be drawn from the pipeline (groove as needed at the pipeline end) | | | | | | | | | | Rubber bellows | Rubber grades | | Carrier |
|---|
| | | | | |
|---|
| up to 100°C: | EPDM | Cooling water, hot water, seawater, acids, dilute chlorine compounds | Nylon fabric
Polyester fabric
Kevlar fabric
Glass fibre fabric
Steel mesh | | EPDM, Drinking water approved | Drinking water | | EPDM, beige, food grade | Foodstuffs | | EPDM, abrasion-resistant | Abrasive materials, Water-sand extraction | | EPDM, insulating | Electrical systems construction | | IIR | Hot water, acids, bases, gases | | CSM | Strong acids, bases, chemicals | | NBR | Oils, petrol, solvents, compressed air | | NBR, bright, food grade | Oil, fatty foods | | up to 80°C: | CR | Cooling water, slightly oily water, seawater | | up to 70°C: | NR | Abrasive materials | | up to 150°C: | HNBR | Oils, petrol, solvents, compressed air | | up to 180°C: | FPM | Corrosive chemicals, petroleum distillates | | up to 200°C: | Silicon (Q) | Air, saltwater atmosphere | | Silicon (Q), white, food grade | Foodstuffs, medical technology | | | | | PTFE lining: Permanently embedded against chemical attacks on the interior at the rubber bellows, available starting at NB 300.
Take the restriction of the listed movement into account! | | | | | | | Fastening clamps | Design: | Depending on pressure and the nominal diameter, endless clamp belt, screw thread belt, small clamps or hinge bolt clamps. At higher pressures, 2 adjacent clamps per fastening side | | Width: | | Endless clamp belt: | ¾“ | | Screw thread belt: | ½“ | | Small clamp: | depending on Ø: 9–12 mm | | Hinge bolt clamp: | depending on Ø: 18–30 mm | | | Materials: | | Endless clamp belt with screw lugs (tongs): | 1.7300 | | Screw thread belt with threaded screw lugs: | 1.4310 | | Small clamp, belt and housing: | 1.4016 (Screw steel galvanised) | | Hinge bolt clamp, belt and housing: | 1.4016 (Screw steel galvanised) | | Support rings | TYPE | | Vacuum support ring | Pressure support ring | Pressure |
|---|
| | | | | B130
B140
B150 |  | Without | Without | Slight pressure,
slight vacuum | B131
B141
B151 |  | Medium contact, inside the arch apex | Without | Slight pressure,
for vacuum up to 0.05 bar absolute | B132
B142
B152 |  | No medium contact, embedded into
the arch apex of the rubber bellows | Without | Slight pressure,
for vacuum up to 0.05 bar absolute | B133
B143
B153 |  | Without | External in the
arch trough | Depending on the nominal diameter
up to 6 bar, slight vacuum | B134
B144
B154 |  | Medium contact, inside the arch apex | External in the
arch trough | Depending on the nominal diameter
up to 6 bar, for vacuum
up to 0.05 bar absolute | B135
B145
B155 |  | No medium contact, embedded into
the arch apex of the rubber bellows | External in the
arch trough | Depending on the nominal diameter
up to 6 bar, for vacuum
up to 0.05 bar absolute | | Materials |
|---|
| Stainless steel: | 1.4301 (X5CrNi18-10)
1.4539 (X1NiCrMoCu25-20-5)
1.4571 (X6CrNiMoTi17-12-2) | Other materials on request | | Carbon steel: | 1.0570 (S355J2G3) rubber coated
1.0570 (S355J2G3) galvanised |
| Download Product description
Movement-tables (if available)
Planning help image | |
