Issues with loose-flange level gauges – an old problem again! Please, experts!
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The problem remains; everything has been installed now. I called the manufacturer earlier to ask for help, and all the manufacturer said was three words from start to finish； No problem! This tank is a atmospheric pressure tank, equipped with a loose-flange level gauge of type HG-T20592-2009; its specification is PN40 DN50. The actual measurement value for d is 83 mm. Experts, please help identify what the problem is! ! !
No problem, what type of level gauge is it?
It’s normal; flanges are available everywhere. What on earth is a flange level gauge? With a magnetic flip-type gauge, only the middle part can be used, while the ends cannot.
Sleeve flange with welded neck, view the sealing surface
Find the manufacturer; it’s their problem.
As long as the bolt holes align, it can be used.
The sealing surfaces do not match; is the loose-flange too narrow?
I don’t understand what the original poster is trying to convey?
Are you trying to say that there is a slight misalignment between the flange of the level gauge and the flange of the equipment? I think the issue is that there’s a discrepancy in the length when you select the level gauge; for atmospheric pressure storage tanks, knocking on it should solve the problem
This is a level gauge with DN50 PN40 specifications, and a pressure tapping valve with DN50 PN50 specifications. The American standard corresponds to 20615; it is different from 20592.