Type 318 BIO
CIRCULAR SIGHT GLASS FITTINGS TYPE 318 BIO
SHORT DESCRIPTION - ROUND TANK SIGHT GLASSES TYPE 318 BIO (similar to DIN 28120)
Our tank sight glass fittings Type 318 BIO are intended for welding installation into or onto a pressure vessel wall and provide a way to observe and illuminate the interior of the vessel. ACI tank sight glass fittings of Type 318V have been designed based on DIN 28120 for an operating pressure from -0.2 bar up to +0.5 bar. Two flanges of high quality stainless steel 1.4401 surround a glass disc made up chemically highly resistant borosilicate glass 3.3 according to DIN 7081, creating a nearly maintenance-free inspection port.
Contrary to the sight glass fittings described in DIN 28120, our Type 318 BIO is significantly thinner and the hexagon head screws barely protrude out of the cover flange, thus reducing the space required for installation. Type 318 BIO (based on Type 318) is dedicated to low pressure BioGas application.
The sight glass fitting is sealed using flat gaskets specifically selected for your application from our vast range of gasket materials. Apart from commonly used aramid fibre gaskets, we can offer Type 318 BIO with sophisticated materials like PTFE, NBR, graphite composites and many other gasket types.
Like the rest of our tank sight glass fittings, Type 318 BIO is available equipped with wipers type SW1, spray nozzles or light fixtures. Read on to learn more technical details of our Type 318 BIO!
Base and Cover flanges:
borosilicate glass to DIN 7081
PTFE (200 ºC), FKM (200 ºC), NBR (100 ºC), C4400 (150 ºC), Silicone (200 ºC), EPDM (140 ºC), Graphite (280 ºC)
similar to DIN28120 but from -0.2 up to +0.5 bar
DN50 - DN400
from -0.2 up to +0.5 bar
With borosilicate glass from 100° C up to max. 280 ° C
depending on gasket type
Optional versions are possible.
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