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NORMA FLEX/FLEX E universal pipe couplings

NORMA FLEX/FLEX E protective pipe couplings are suitable for connecting any metal and plastic pipes with high internal pressure but without axial load. They are suitable for connecting pipes with smooth ends without rigid axial fixation, and the difference of external diameter can be up to 27 mm.

The FLEX/FLEX E pipe couplings are suitable for compensating axial and temperature deformations, vibration and noise.

Advantages of FLEX / FLEX E coupling:

  • no need deburring;
  • coupling ready for installation;
  • lock can be rotated and positioned in the most convenient way;
  • no need to ensure the coaxiality of the pipes (saving time and money).

The couplings are equipped with two protective rings which are designed to protect the sealing ring against ultraviolet radiation and flame.

It is mounted with two bolts.

Couplings combine in themselves properties: connecting and sealing and compensatory.

It can be used at installation in buildings, under the earth and in water, including salt is possible.

FLEX E coupling is an economical version of the FLEX coupling with hollow locking bolts.

Made of high quality steels.

Photo Наименование Article Цена
NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 159 (157.3-160.7) [Code number: NR-0573-9100-159]
Details
NR-0573-9100-159

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
159.0 157.3 - 160.7 16 32 35 113 185 215 M 10 SW 8 30 2.69

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 200 [Code number: NR-0575-8140-200]
Details
NR-0575-8140-200

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) PN WP C max a d H Screw Torque Weight
mm bar bar mm mm mm mm mm Nm kg/pc.
200 20.0 43.0 35 141 240 270 M 12 SW 10 35 5.8

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 254 (250.0-256.0) [Code number: NR-0575-8140-254]
Details
NR-0575-8140-254

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
254.0 250.0 - 256.0 18.0 35.5 35 141 285 315 M 12 SW 10 35 6.5

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 306.0 (302.0-308.0) [Code number: NR-0575-8140-306]
Details
NR-0575-8140-306

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
306.0 302.0 - 308.0 15.0 29.0 35 141 340 370 M 12 SW 10 35 7.4

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 315 [Code number: NR-0575-8140-315]
Details
NR-0575-8140-315

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) PN WP C max a d H Screw Torque Weight
mm bar bar mm mm mm mm mm Nm kg/pc.
315 15.0 29.0 35 141 340 370 M 12 SW 10 35 7.4

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 400 [Code number: NR-0575-8140-400]
Details
NR-0575-8140-400

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) PN WP C max a d H Screw Torque Weight
mm bar bar mm mm mm mm mm Nm kg/pc.
400 10.0 22.0 35 141 440 470 M 12 SW 10 35 8.9

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W2, with EPDM seal, DN 406.4 (402.0-410.0) [Code number: NR-0575-8140-406]
Details
NR-0575-8140-406

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0737
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
406.4 402.0 - 410.0 10.0 22.0 35 141 440 470 M 12 SW 10 35 8.9

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 200 [Code number: NR-0575-8340-200]
Details
NR-0575-8340-200

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) PN WP C max a d H Screw Torque Weight
mm bar bar mm mm mm mm mm Nm kg/pc.
200 20.0 43.0 35 141 240 270 M 12 SW 10 35 5.8

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 254 (250.0-256.0) [Code number: NR-0575-8340-254]
Details
NR-0575-8340-254

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
254.0 250.0 - 256.0 18.0 35.5 35 141 285 315 M 12 SW 10 35 6.5

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 306.0 (302.0-308.0) [Code number: NR-0575-8340-306]
Details
NR-0575-8340-306

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
306.0 302.0 - 308.0 15.0 29.0 35 141 340 370 M 12 SW 10 35 7.4

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 315 [Code number: NR-0575-8340-315]
Details
NR-0575-8340-315

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) PN WP C max a d H Screw Torque Weight
mm bar bar mm mm mm mm mm Nm kg/pc.
315 15.0 29.0 35 141 340 370 M 12 SW 10 35 7.4

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 400 [Code number: NR-0575-8340-400]
Details
NR-0575-8340-400

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) PN WP C max a d H Screw Torque Weight
mm bar bar mm mm mm mm mm Nm kg/pc.
400 10.0 22.0 35 141 440 470 M 12 SW 10 35 8.9

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 406.4 (402.0-410.0) [Code number: NR-0575-8340-406]
Details
NR-0575-8340-406

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
406.4 402.0 - 410.0 10.0 22.0 35 141 440 470 M 12 SW 10 35 8.9

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX protective pipe coupling, W5, with EPDM seal, DN 531.0 (528.0-534.0) [Code number: NR-0575-8340-531]
Details
NR-0575-8340-531

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4401
  • Lock bars: 1.4404
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
531.0 528,0 - 534,0 7.5 16.0 35 141 565 595 M 12 SW 10 50 10.9

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX E protective pipe coupling, W2, with EPDM seal, DN 48.3 (47.6-50.5) [Code number: NR-0582-9100-048]
Details
NR-0582-9100-048

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0580
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
48.3 47.6-50.5 16 50 8 63 70 90 M 8 SW 6 5 0.46

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX E protective pipe coupling, W2, with EPDM seal, DN 57.0 [Code number: NR-0582-9100-057]
Details
NR-0582-9100-057

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0580
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
57.0 56.3-57.7 16 50 17 78 80 100 M 8 SW 6 10 0.61

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX E protective pipe coupling, W2, with EPDM seal, DN 60.3 (59.5-61.0) [Code number: NR-0582-9100-060]
Details
NR-0582-9100-060

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0580
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
60.3 59.5-61.0 16 40 17 78 85 105 M 8 SW 6 10 0.62

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX E protective pipe coupling, W2, with EPDM seal, DN 159 [Code number: NR-0582-9100-159]
Details
NR-0582-9100-159

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0580
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
159.0 157.3-160.7 16 32 35 113 185 215 M 10 SW 8 30 2.38

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX E protective pipe coupling, W2, with EPDM seal, DN 355.6 (352.0-359.0) [Code number: NR-0582-9100-355]
Details
NR-0582-9100-355

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.0580
  • Lock bars: 1.7220
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
355.6 352.0 - 359.0 9.0 15.0 35 139 390 420 M 12 SW 10 25 6.0

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

NORMA FLEX E protective pipe coupling, INOX-W5, with EPDM seal, DN 48.3 (47.6-50.5) [Code number: NR-0582-9300-048]
Details
NR-0582-9300-048

Application purpose:

  • For connecting metal and plastic pipes with high internal pressure

Special features:

  • Temperature range: -30 °C to +125 °C
  • Compensation of pipe gaps allows thermal elongation of the pipes
  • Joining all kind of pipe materials is possible, e.g. steel, plastic, cast iron, etc.

Material:

  • Sealing: EPDM
  • Strip insert: 1.4571/PA-GF
  • Protection ring: 1.4571
  • Lock bolt: 1.4571
  • Lock bars: 1.4404
DN (OD) OD min - OD max, mm PN WP C max a d H Screw Torque Weight
mm mm bar bar mm mm mm mm mm Nm kg/pc.
48.3 47.6-50.5 16 50 8 63 70 90 M 8 SW 6 5 0.46

PN (Nominal Pressure) is the max. admissible working pressure in shipbuilding, based on a safety factor of ≥ 4

WP is the max. working pressure in industrial applications, with a safety factor as per NORMA specification

See also