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Dear all, Greetings . Hope someone could help me on the query below Currently, we have seen a paint specification revision from a user requesting contrasting color coating on Multi-Layered coat. This requirement is for valves. We have never seen this requirement before.CAN YOU PLEASE ADVISE...

Dear all, Greetings!! Need some expert comments on the below query. Quite recently on different gas pipeline projects, we are seeing metal seated ball valve requirement even though the line carries CLEAN GAS WITH TEMPERATURE LESS THAN 100 DEG C. We have also checked with the designer on...

Dear Dejan, Great !!! Thank you very much for your quick and kind response. Now I have a better understanding on this. We will get the process details and valve type from contractor to attend their requirement Thanks and Regards, Anand

Dear Dejan, Thanks for your response. Incidentally I also happened to download the same specification. Though I could understand the application aspect of spec break yet not able to visualize the kind of arrangement between such break points. In other words between a HP line and LP line what...

Dear all, Can anybody enlighten me on "what is a spec break valve" Can this be an alternative to ESDV ball valve. We are working on a greenfield project for Upstream Gas Well project with an EPC contractor. In phase 1 of the gas well project we supplied ESDV BALL VALVES to a different EPC...

Thanks for your reply. Client also clarified now that extended body is no long required for that valve

Dear all, Can some one enlighten me in this. Recently I encountered a case where the customer requested extended body design in compliance with API 600. I referred the specification but there was no reference to extended body. However we have extended body reference to API602. Valve size is 2...

No one can manufacture a solid TC valve. TC is available in a powdered form which can be only coated over ball profile using high velocity fuel process.

Dear Roberto and Mick, Thanks for your response. I also got this clarified here. A manual ON OFF valve performs a ON and OFF function which blocks/opens the line It does not give any feedback to the DCS. However ESDV,automated ON OFF valve and control valve lines valve position are constantly...

Hi Pennpiper, The sensors that read a specific condition are completely a different subject and not in general fall under the ESDV vendor scope OR ESDV user instrumentation team Thanks AP

Hi Little Inch, Yes I agree as per my knowledge I could not see any other reasons other than what you mentioned on why it fell into instrumentation. But having it classified under instruments questions the fundamentals of the definition.

Hi diegoverly, Assume your requirement is for a gate valve according to API600 spec. API 600 spec trim chart classifies the AISI410 steel as TRIM 1.If the seat surface is hardfaced with stelliting and the gate surface is 410 then it is acceptable according to API600. But end users like Saudi...

Hello, Can some one enlighten me on this question. An Instrument is a device to record,measure or identify any entity. A ON OFF or ESDV valve is not desired to perform any of the mentioned functions. A relief valve can be categorized as instrument.Whereas a linear and rotary ESDV and ON OFF...

Thank you for the response

Dear all, ASME B 16.34 6.1.3 point d states that when a hole is drilled on the valve body necks certain considerations has to be ensured .The specification formulates some ligament dimensions. Can some one please explain me more on this .I could not figure out exactly under what special...

Thank you for your response.

Hi gerhardl - Thanks for your response. Is there are any international standards or global customer specifications which limits the usage of soft seat relating it to the pressure rating.

Hi, Can we use elastomers seats for valves which are high pressure rated ( for 1500 rated and above). I am under the impression that these elastomer's mechanical properties will not allow it to withstand these high pressure(240 bar for 1500 rating considering a case) . Shouldn't we use only...