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Valves:
forged and cast high pressure valves: control, stop, check, blow down, globe, gate, ball,
piston, bellows sealed, instrument
Level gauges: magnetic level gauges, glass level gauges: transparent, reflex, bicolor
Cesare Bonetti - BONT - CMI Pasquini |
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Visitor number
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Last Update
06-02-2008 |
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LEVEL GAUGE GLASSES
HIGH TRANSPARENCY
COLOURLESSNESS
NO INCLUSIONS
NO INTERNAL STRIAE
REGULAR POLARIZATION
THERMAL SHOCK RESISTANCE
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BONT Sight
Glasses for Level Gauges grant the best chemical and physical properties, holding a very
precise place as for chemical composition within the very large group of "Borosilicate
Glass" which is suitable for many application. Each individual BONT sight glass is manufactured by moulding, using only the
inside of the melted part and removing the whole external part in order to obtain best
quality glasses, pratically with no striae.
Chemical and mechanical resistance of BONT sight glasses is
due also to their heat treatment, and all events they show the following properties:
- Hydrolytic resistance: Class 1-DIN 12111 and ISO 719
- Alcali resistance: Class 2-DIN 52322 and ISO 675
- Acid resistance: Class 1 - DIN 12116
Hydrolytic resistance is particularly important for glasses fitted on steam boiler level
gauges at low and medium pressure. |
In BONT sight
glasses special attention is paied to lenght, width, thickness and especially flatness
tolerences. From the latter point of view BONT sight glasses have very strict tolerance
values, definitely lower than must of the ones on the market.
What above ensure less stress and longer life of glass and joints.
Sight glasses under polarized light
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Go to Level Gauge Glasses catalogue
(.pdf file 1956 Kb)
[ Magnetic Level Gauges ] [ Reflex Level Gauges ] [ Transparent Level Gauges ] [ Bicolor Level Gauges ] [ Level Gauge Glasses ] [ Level Gauge Valves ]
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