Flared Tube Fitting
Requirements
Flared Tube Connectors with Flared Tube Adaptor (DIN 3949)
Preparation of tube:
- Cut in 90 ° angle. Angle tolerance of 0.5 ° is tolerable!
- Slide pressure ring and swivel nut on tube as illustrated.
Assembly with flaring machine
Caution: Read documentation of the flaring machine before usage!
- Flare tube with flaring machine.
- Check tube for suitable flare: the diameter of the flare must comply with the values specified in the table below.
Bördelverschraubung - Rohrlängenbestimmung Flared Tube Fitting - Determining Tube Length | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d [mm] | 6 | 8 | 10 | 12 | 15 | 16 | 18 | 20 | |||||||||||||||||
| s [mm] | 1 | 1,5 | 1 | 1,5 | 2 | 1 | 1,5 | 2 | 1 | 1,5 | 2 | 1,5 | 2 | 2,5 | 1,5 | 2 | 2,5 | 3 | 1,5 | 2 | 2,5 | 2 | 2,5 | 3 | 3,5 |
| x1 [mm] | 1 | 2 | 1 | 2 | 2,5 | 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 | 0 | 1 | 1,5 | 2,5 | 0 | 1 | 1,5 | 1 | 2 | 3 | 4 |
| L1 [mm] | 8 | 9 | 8 | 9 | 9,5 | 8 | 9 | 10 | 8 | 9 | 10 | 8 | 9 | 10 | 8,5 | 9,5 | 10 | 11 | 7,5 | 8,5 | 9 | 11,5 | 12,5 | 13,5 | 14,5 |
| Da min [mm] | 9,1 | 11,3 | 13,1 | 15,3 | 19,1 | 20,6 | 23,2 | 25,6 | |||||||||||||||||
| Da max [mm] | 10 | 12 | 14 | 16 | 20 | 22 | 24 | 26,8 | |||||||||||||||||
Installation in final location
- Apply threads of the fitting with lubrication
- Insert flare adapter into tube fitting.
- Fasten swivel nut with spanner until the intermediate ring is firmly attached in the shaft.
- Tighten nut approx. 1/4 rotation after sharp increase of required force.
Repeated Installation
- The swivel nut is tightened without increased force when the installation is repeated.
Bördelverschraubung - Rohrlängenbestimmung Flared Tube Fitting - Determining Tube Length | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d [mm] | 22 | 25 | 28 | 30 | 35 | 38 | 42 | ||||||||||||||||||||
| s [mm] | 1,5 | 2 | 2,5 | 3 | 2 | 2,5 | 3 | 4 | 2 | 2,5 | 3 | 2 | 2,5 | 3 | 4 | 5 | 2 | 2,5 | 3 | 4 | 2,5 | 3 | 4 | 5 | 2 | 3 | 4 |
| x1 [mm] | 1 | 2 | 3 | 3,5 | 1 | 1,5 | 2,5 | 4 | 1,5 | 2,5 | 3 | -0,5 | 0,5 | 1 | 3 | 4,5 | 1,5 | 2 | 3 | 4,5 | 0 | 0,5 | 2 | 4 | 1,5 | 3 | 4,5 |
| L1 [mm] | 8,5 | 9,5 | 10,5 | 11 | 13 | 13,5 | 14,5 | 16 | 9 | 10 | 10,5 | 13 | 14 | 14,5 | 16,5 | 18 | 12 | 12,5 | 13,5 | 15 | 16 | 16,5 | 18 | 20 | 12,5 | 14 | 15,5 |
| Da min [mm] | 26,5 | 31,1 | 32,7 | 37 | 41,8 | 46 | 48,8 | ||||||||||||||||||||
| Da max [mm] | 27,5 | 33 | 33,3 | 38,7 | 42,7 | 47,2 | 49,8 | ||||||||||||||||||||