For outdoor explosion-proof areas, is an explosion-proof flexible tube or an explosion-proof union better?
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When selecting instruments for a sewage tank, I am considering whether explosion-proof flexible hoses or explosion-proof flanges would be a better choice for connecting the instruments to the piping. Compared to rigid pipes, the advantage of flexible pipes is their better resistance to impacts and corrosion; previous examples have used these types of pipes. The downside is that after a few years, they generally start to leak water. It is also possible to use both, but the degree of necessity is unclear. I wonder what other sailors think?
Does your factory use Glen head fittings? How are the reactions on site?
Flexible hoses are prone to water ingress at their various connections due to the lack of waterproofing, but they can protect cables. The GRAN connector has good sealing properties, which prevent rainwater from entering the instrument junction box; it is recommended to use high-quality cables.
Well, I’m now interested in knowing about the on-site use of explosion-proof gland fittings
In terms of cost, explosion-proof flexible hoses are more expensive than flange connections; in terms of installation, they are more complicated to use; and in terms of waterproofing performance, they are inferior to flange connections. Therefore, it is recommended to choose flange connections first.
Most of the projects nowadays involve explosion-proof gaskets; few customers request the use of explosion-proof flexible hoses
It is recommended to use flange connections; unless the operating conditions are particularly harsh, such as in environments with high temperatures that cause corrosion, flexible hoses are not advisable for normal conditions. As for water inlet, whether flexible hoses or flange connections are used, the process of introducing water can be problematic – let’s find out what causes these issues Then make some modifications; even if water gets into the cable tray, it’s not good for the cables either.
Use explosion-proof gland fittings; as long as the flexible tube doesn’t rust, that’s fine
It is best to use lightweight armored cable with gland connectors, which yields very good results.
In an explosion-proof area. How should cables and explosion-proof gland fittings be matched? Meets the specifications. Can ordinary cables be equipped with explosion-proof gland fittings?