Recent content by gguliye

thanks!, 400 is out of option

Hello, i checked the spike snubber but it is being mainly used for gas air vapor applications.... remote sensing could be another choice but pulsation at the inlet may cause the valve to leak anyway if the issue is with pulsating at valve inlet only not on the boiler side or whatever...

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,