Recent content by Lucycn

hi anegri, many thanks for still remembering my question, I am very glad that you have found an older name for the standard was ASME B16.104, I will try to looking for the standard if possible, it is as you mentioned in your question it is not only for water test but also incl. air test for...

Hi gervanderpers, Many thanks for your suggestion, it is the best choice for us, because it is very easy to available for ductile iron, but the problem is as you mentioned how can I achieved 4 till 5 layer coating, what's material of coating I can use? regarding of dis what's the hardrubber...

Hi DeanA, Many thanks for your information, we will check it and compare the price to decided which one is our best choice.

Hi macvalsa, Thanks a lot for your help information, your suggestion will be very useful for me, but I want to confirm except incolloy 825, whether monel 400 also very expensive, as you know it is DN3400 i cannot imagine how big and how weight it is. if the body and disc all use the same...

Hi dave2109, Many thanks for your comment, Yes, it is rubber line Butterfly valve, would you tell me the typically provide material of Valve BODY, DISC and Stuffing as well as valve shaft?

What material is suitable for valve body disc seat shaft and stuffing of DN3400 rubber seated butterfly valve use for seawater, design is AWWA C-504/short style. Your reply will be high appreciated.

hi unsy, thanks for your answer, yes there more conditions we should to consider for design, every material has its advantage and disadvantage when we use it. regarding my question, some people agree me to use cast iron, others suggest me to use carbon steel, as you mentioned, if the valve is...

hi anegri, I have check the Forum which you mentioned, it is general principle of material selection but I cannot find the defined for PN25 butterfly valve body material using the Cast iron.

Hi cranekiran, Thanks for your reply, I check the standard BS EN 593, it is defined the body material acc. to EN 1503 but I cannot find EN 1503 on hand. BS 4504 is defined the flange material but acc. to ASTM/ANSI B16.5a for the material of flange is Steel instead of Cast iron for 150psi(PN20)...

hi mqas, thanks for your explanation, as usual SMYS is defined by manufacturer or by user?

Hi gervanderpers, thanks for your answer, I got the same idea from our engineer, but our customer request use cast iron, so I want to know who has the experience of using cast iron for PN 25 as valve body, how about the result.

Hi mqas, thanks for your reply, would you tell me what's meaning of "SMYS"? if you are designer can you use cast iron as the body material to design PN25 DN500-1600 for drinking water medium? Thanks in advance.

Who can tell me whether I can use Cast Iron for Butterfly Valve Body for PN25 DN500-1600? do you have better material to recommend to me? what's the advantage of the material which you recommend? Your answer will be high appreciated.

Hi hmmmmm, Thanks for your reply, Sorry for response later, my computer contract Virus Worm.Blaster from Aug.11, I cannot log on www.Eng-tips.com smoothly until now. Refer to my question I think I am clearly, but I wish to keep continue discussing this topic when the problem I meet in my work...

Hi hmmmmm, Thanks a lot. I will choose rubber seated attached on the body in the future, I think. Refer to seat is on the body, would you tell me what's a separate sealing element attached to the disc edge? what's the advantage and disadvantage in character between double offset and triple...