NORMA FLEX couplings | Inrusstrade

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 Name Article Price

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: -20 °C to +80 °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

NORMA FLEX/FLEX E universal pipe couplings

See also