ERV Red DN25-100

The ERV Red rubber expansion joint is used for flexible connections in pipeline systems for hot water, drinking water (DVGW W270 and ACS certified), hot cooling water and hot wastewater. This expansion joint is also suitable for use with additives such as weak acids, alkalies, salt solutions, technical alcohols, esters and ketone, and a wide range of other chemicals. The ERV Red is not suitable for oil products. The flanges of the ERV Red are rotatable and standard available in DIN PN10 and PN16. The operating temperatures depend on the medium and range from -40 °C to +100 °C. The maximum working pressure is 16 bar or 10 bar for larger diameters.

CONSTRUCTION

  • Seamless Butyl/EPDM inner wall, low diffusion
  • PA-textile reinforced, butyl-coated bellows
  • EPDM outer wall, ozone- and heat-resistant
  • Electrically conductive
  • Rotating flanges, galvanized steel

 

APPROVALS

Approved by DNV-GL, Lloyd’s Register, Bureau Veritas, RINA, ABS, CCS,

BWB, DVGW, ACS, and WRAS.

 

OPTIONS

  • Most sizes available in different neutral lengths
  • Flanges according to DIN PN6, PN25, PN40 or ASA 150 lbs
  • Flanges in stainless steel or bronze
  • Tie rods
  • PTFE lining
  • Vacuum support rings
  • Fire protection cover
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Product data
PART No. INSIDE DIAMETER A (MM) LENGTH B (MM) WORKING PRESSURE (BAR) FLANGE DIMENSIONS CLASS OUTSIDE DIAMETER C (MM) PITCH D (MM) E x F (NUMBER x MM)
300 040 025 25 130 16 DIN PN10/16 115 85 4x14
300 040 032 32 130 16 DIN PN10/16 140 100 4x18
300 040 040 40 130 16 DIN PN10/16 150 110 4x18
300 040 050 50 130 16 DIN PN10/16 165 125 4x18
300 040 065 65 130 16 DIN PN10/16 185 145 4x18
300 040 080 80 130 16 DIN PN10/16 200 160 8x18
300 040 100 100 130 16 DIN PN10/16 220 180 8x18
300 040 125 125 130 16 DIN PN10/16 250 210 8x18
300 040 150 150 130 16 DIN PN10/16 285 240 8x22
300 040 201 200 130 10 DIN PN10 340 295 8x22
300 040 200 200 130 16 DIN PN16 340 295 12x22
300 040 251 250 130 10 DIN PN10 395 350 12x22
300 040 250 250 130 16 DIN PN16 405 355 12x26
300 040 301 300 130 10 DIN PN10 445 400 12x22
300 040 300 300 130 16 DIN PN16 460 410 12x26
300 040 351 350 200 10 DIN PN10 505 460 16x22
300 040 401 400 200 10 DIN PN10 565 515 16x26
300 040 501 500 200 10 DIN PN10 670 620 20x26
300 040 601 600 200 10 DIN PN10 780 725 20x30
300 040 701 700 260 10 DIN PN10 895 840 24x30
300 040 801 800 250 10 DIN PN10 1015 950 24x33
300 040 901 900 300 10 DIN PN10 1115 1050 28x33
300 040 902 1000 300 10 DIN PN10 1230 1160 28x26

Movements
The maximum movements for the ERV Green expansion joint stated below apply to the neutral length for operating temperatures up to +50 ºC and are not in combination (no lateral/axial movements simultaneously). The permissible movements are reduced by 25% for temperatures between +50 ºC and +70 ºC and by 40% for temperatures between +70 ºC and +90 ºC. Use of the optional vacuum ring leads to a reduction of 50%.
NOMINAL DIAMETER (MM) COMPRESSION (MM) ELONGATION (MM) LATERAL (MM) ANGULAR (DEGREES)
25-80 30 20 ± 30 ± 30
100-150 30 20 ± 30 ± 20
200 25 30 ± 30 ± 10
250-300 10 30 ± 15 ± 5
350-600 40 35 ± 30 ± 8
700 40 30 ± 30 ± 5
800 40 35 ± 35 ± 5
900-1000 40 40 ± 40 ± 5

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