Vacuum Bell Jar Chambers Degassing Systems

Borosilicate Glass Bell Jar Systems.

Glass Bell Jars are ideal for degassing or vacuum testing when an all round vision is required. They are also excellent for educational teaching aids where experiments such as "Bell in a Vacuum" can be demonstrated.

The standard Bell Jar Systems fall within two different groups. The SF group, and the VF group.

The SF group will comprise :

A Borosilicate bell jar, fire polished and ground on the open end and fully annealed after manufacture, suitable for vacuum applications. The seal will be Nitrile rubber ‘L' gasket.

The base plate will be machined from aluminum alloy mounted on three legs with feet suitable for standing/securing to the bench. The pumping port will be offset from the centre.

A vacuum manifold will be fitted comprising a pump isolation ball valve, a system vent valve and a 63mm diameter glycerin filled vacuum gauge scaled 0-1000 Mbar together with all necessary Stainless Steel screwed fittings. The manifold will terminate in a riffled nozzle to accept a flexible 12mm (1/2") ID vacuum hose (not included).

The system is leak tested after manufacture including a pressure test rise and is suitable for use at pressures down to 10־²Mbar.

Bell Jar System SF range

The VF will comprise:

A Borosilicate bell jar, fire polished and ground on the open end and fully annealed after manufacture, suitable for vacuum applications. The seal will be Nitrile rubber ‘L' gasket.

The base plate will be machined from aluminum alloy mounted on three legs with feet suitable for standing/securing to the bench. The pumping port will be offset from the centre.

A vacuum manifold will be fitted comprising an Edwards SP16K pump isolation valve, an Edwards AV10K system vent valve and a 63mm diameter glycerin filled vacuum gauge scaled 0-1000 Mbar together with all necessary NW 16 vacuum fittings to form a complete system. The manifold will terminate in a riffled nozzle to accept a flexible 12mm (1/2") ID vacuum hose (not included).

The system is leak tested after manufacture including a pressure test rise and is suitable for use at pressures down to 10־³Mbar.

Bell Jar System VF range

Options available for the SF and VF models

Viton ‘L' gasket
Electrical feedthrough'.
Fluid feedthrough
Flexible Stainless Steel NW16 x 1metre long hose
Safety Acrylic implosion guard.

Borosilicate Glass Cylinder Systems.

Glass cylinder systems offer the user access through the top of the cylinder. This provides a very versatile system for all round visibility and access to the chamber without the removal of a bell jar.

The Glass cylinder systems have the same specification as the standard Bell Jar Systems SF and VF range, but with the addition of an extra ‘L' gasket and an acrylic lid.

Glass Cylinder System SF range

Glass Cylinder System VF range

Options  available for the SF and VF models

Viton ‘L' gasket
Electrical feedthrough'.
Fluid feedthrough
Flexible Stainless Steel NW16 x 1metre long hose

VC-12-VF With Aluminium lid.		BJ-8-SF With Safety Acrylic implosion guard.
150mm Acrylic Chamber, Base and lid with Gauge and Valve Manifold.		VC-12-SF With Aluminum lid, lifting handle and  Safety Acrylic implosion guard.

Safety Warning:

We strongly recommend that all our Vacuum Bell Jar Degassing Systems are fitted with an implosion guard during use. 

We can supply Acrylic transparent implosion guards to fit all of our Vacuum Bell Jar Systems.

See our Vacuum Bell Jar and Cylinders Page.