Space Flight Hardware

PTFE Bellows - Glass To Glass

These bellows are used in installation of glass equipment for following purposes:
- to provide safe branching of pipelines from the main glass equipment.
- to accommodate odd degrees and variation in length.

Bellows are supplied along with required bellow flanges and nut-bolts.  Distance locking bolts are provided to avoid excessive compression or contraction of the bellow.  Gaskets are not required where bellows are used.  For drilling details, refer "Bellow flanges".
 

Vacuum bellows
For pipelines of 80DN and above operating under vacuum, the bellows are provided with an internal sleeve which supports the convolutions without affecting the flexibility of the bellow.  These can withstand a temperature of 200°C under full vacuum.
For size up to 50DN, line bellows can be used for these applications.
 

Cat. Ref. DN D D1 D2 L L1 t
VB3*
VB4*
VB6*
VB9*
VB12
80
100
150
225
300
155
200
275
350
420
98
132
184
253
338
82
111
162
230
308
70
70
70
70
70
5
5
5
5
5
3.0
3.5
4.0
5.0
5.0


* marked items are available fast.


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  Analytical Research Systems, Inc.
PO Box 140218
Gainesville, FL 32614-0218 USA
    Phone: (352) 466 0051
Fax: (352) 466 0055
Email: Info@ARS-Fla.com
 

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