Search results for query: *

theoretically, there can be something wrong with the backflow preventer also, that would allow the backpressure to help to lift the valve piston

If u are worried about liquid chattering that may be result of oversizing, please choose modulating pilot valve.

thanks !!

Hello Obturator, thanks for ur answer do we have standard/hands on guidance to make selection or it is done by the vendors?

Hello, are PSV seats ( metal seats) for conventional valves made from forging or casting or simply machining from cylinder? Are different MNF following different rules to produce it? If it is made from castings, can we have some dirt stuck on poroous parts of disc that may later cause leakage...

Hello, In the manufacturer that i am working, we have different trim styles for the water and gas. Point is that our liquid trim is certified for the gas also, but spring becomes different at different CDTPs. In other words, the valve on gas service is not the same valve on liquid service and...

Thanks Obturator

Hello All, which standard defines what is the pressure boundary part for a safety relief valve? Does the nozzle of the valve belong to the pressure boundary? regards

Obturator, thank u very much for ur clarification highly appreciate ur help and support thx regards,

please check image in below link https://materials-welding.blogspot.com/2015/09/mw23564-query-regarding-table-2-of.html

well it is in NACE document for the SS it tells max 60 degrees celsius in the relevant table regards,

Dear Obturator, For SS, the specification tells maximum temperature of 60 degrees Celsius, does it mean that we can not use 316 SS for the NACE application where the environmental temperature is above 60 degrees celsius? regards,

Hi All, is there any reasons why 316 SS spring is not possible to select for PSV in nace application while 316 SS nozzle or disc are possible to select? regards,

Hello All, I am reading butterfly training and it tells me that EOL PED Limitations applied to all resilient seated valves what kind of limitations of PED do we have for EOL service on butterfly valves? regards,

so in this case, the customer should be responsible for the proper electrical grounding of pipes. am I right? regards,

Hi All, my question is not exactly about PSV, but valves in general I have a ball valve that is anti-static by design and anti-static means that we have electrical continuity between stem ball and body. So it is clear that the explosion can not happen from the internals of the valve, for that to...

Sir, if u are talking about ASME Section i that's completely another story AG 80 series is not used for this purpose. as Obturator said, we need to know the several details regards,

Hello IdanPV so the normally CROSBY says that soft seated valves are tight till 95-98 percent of SP no matter material is. i havent seen the material problem. HOWEVER, if u are still in doubt, please proceed AG 81 83 series for gas and thermal relief applications and 81P for the liquid...

Hello, normally spring operated valves with metal seats are recommended till 90 % of the SP regards,

Dear All, i have the following question. i am completely new to regulators. so i am reading the datasheet for 67C regulator and found the following. it has the check valve assembly as being smart bleed option and is activated when the upstream pressure is lost and all air in the output enters to...