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We have purchased one heater, one junction box, one conduit, all Exd certified, for conduit with suffix "U". Do we need to recertify the three things as a new product. there is confusion from description in IEC 60079-0:2011, Section 16.3 and Section 28.2 Section 16.3, looks like it is OK...

Hello, is there any acceptance criteria for air blow to clean the pipe line, clearly specified in API standard? Thanks a lot.

Dear all, We have a pump for hot oil with Dynamic viscosity 0.55mPa.s in 220C, for cold test run, we will have cold oil with Dynamic viscosity 8.12mPa.s. Vendor information shows that when Dynamic viscosity is less than 20mPa.s, it will be ok. I wonder where it comes the conclusion of 20mPa.s...

Sorry, any one can explain, the meaning of Trim Line, and function. Thanks a lot~

Hi, I am working on a HP seperator for LNG feed gas, I wonder what is the input and how to decide the volume and width/longth of HP seperator(vapor and liquid). Anyone have good answer? Thanks a lot.