BS 3463:1975 Observation and gauge glasses for pressure vessels
Standard dimensions, material and quality of glass for tubular, protector, through-vision and reflex glasses for level gauges, for circular sight and light glasses and for port gauge glasses for high pressure steam boilers. Also thermal shock test methods and requirements.
British Standards Institution
With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.
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