Protection Tubes Form 3F

Protection tubes form 3F as defined by standard DIN 43 722 are a straight design, are open at one end and equipped with a bottom at the other end. Alternatively this end can also be welded or dished. Contrary to form 3G a flange is mounted onto the protection tube to flange the protection tube to the process.

Protection tubes form 3F are available with diameters of 9 mm and 11 mm.

The flange welded to the protection tube is made acc. to customer specifications.

The total length of the protection tube is composed of the extension pipe length (above the flange on the protection tube) and the insertion length (measured from the sealing face of the flange).

The standard insertion lengths are 225 mm, 315 mm and 465 mm. Other lengths are available on request.

The ordering code of this product is composed of the component name, design type, total length, extension pipe length, insertion length, material number, flange description acc. to EN 1092-1, nominal diameter and nominal pressure.

Example: Protection tube

For further informations please download our Product Information Protection and neck tubes 

Form 3F
Form
DIN 43 763
Form
DIN 43 772
Total
length L
Installation
length U1
Ext. pipe
total length
Process
connection
Outer diameter
F1
Red.outer
diameter
F3
Red.inner
diameter
d
Measuring insert
length for connection
head form B

F

3 F
307 225
82

Flange acc. to customer
specification
12
( d = 7)

9
6
+0,1/+0,05
315 / Ø 6
367 285 375 / Ø 6
427 345 435 / Ø 6

F

3 F
307 225
82
14
( d = 9)

11
8
+0,1/+0,05
315 / Ø 8
367 285 375 / Ø 8
427 345 435 / Ø 8