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Dear Gerhrdl, Why the fourth offset?Is it for torque reduction? Regards, cranekiran

Dear Naresh, Bolt tightening torque = D*K*P where D= dia of bolt = say 56mm with pitch 3mm, Core dia=52.15mm P = Bolt tensile load = 0.75 * yield stress ( in N/mm2)* area ( which is 3.14*52.14sq/4) consider yield stress as 900 N/mm2 ( for class 10.9) Therefore P= 1442235 N K = Plain...

Hi all, I am now in Maastricht attending the valve world Expo,Anybody in valve forum can contact me.Today is the last day of the expo.It is really good to be here. I am at stall no. 1803 bye, cranekiran

Dear all, Are there any good Bonding adhesives that will bond epdm or Nitrile rubber with s.g iron/stainless steel?.This bonding has to be almost as good as a vulcanised one since the rubber acts as a sealing for hydro-pressure upto 30 bars. thanking in advance. cranekiran

Hi, We did a FM and UL(Underwriters Lab.)testing on Ductile iron valves meant for the fire fighting systems for U.S.A The testing was more stringent than the normal testing standard meant for the valves.(As I found out in comparision with MSS-SP67) I am told that the insurance companies in...

Thanks canuckminer, I saw the valve in the web-site you mentioned.At least now I know that there are similar types existing in the industry.Like you mentioned No standard given but only the Material of Construction. I guess these are manufacured purely from the manufacturer's standard and the...

Thanks generalblr, But the Problem is we ourselves are manufacturers!!The point is I am on a project to develop a Grooved type knife gate valve and at present at a loss to start with what?Eventually I will arrive at a solution myself but it will take a longer time to start with this one without...

Dear all, I put this question in the valve forum but unfortunatly no answer as of now.So I am trying my luck here. Is there any design standard for Grooved Body type knife gate valve(face to face,O.D,I.D)? There are Standards for Grooved type Butterfly valve like MSS-SP67 & ASMEB16.10.But...

Hi, The Shell strength as per Pr-En-12516 is as follows:- 1)First determine the Body shell thickness as per:- Ec=di x p / (2xf-p)xkc (x means multiply) where,Ec=shell thickness in mm di=Body Bore in mm p =Pressure in Mpa =(0.1 x bars) f=Allowable stress in Mpa...

Dear all, It's been a long time since I came back to see what's going on here.I found out that I have really missed lot of good advices given by some experts.This forum is really going stronger day by day. I am in search of a standard ( BS-EN,MSS,AWWA,ASME,JIS,ISO or any new valve standard)...

Dear Anegri, Sorry for the belated reply.Actually I was busy on some site work and could not check mail. Many thanks for your in-depth reply for the Equivalent valve standard. Great Reply!!! Thanks,It was usefull.We are procuring all the standards you have mentioned. Bye!

Yes!! I am referring to P.E.D for the hazard analysis. Many thanks for the equivalent standard.One small doubt,if the standard is already designated as BS-EN then it must have crossed the Pr stage or else it would be Pr-En.... Thanks once again.I am Waiting for your next reply!! Bye!!

Hi, Yes,You can use Cast iron as the Body material for the Butterfly valve in Question. Refer BS:5155 & BS:4504 SEC.1&2. Just for advice,The above standards I have mentioned have been or are in the process of withdrawal stage.But there is no harm if you can still get a copy of that. For...

Hi, I would like to know from this forum the equivalent British En standard for ASME-B 16.34,specifically the temperature/ pressure rating for different classes of valve body materials.Also it will be very helpful if you can give me the ASME standard for the hazard analysis of valves...

Dear All, I would like to know the ASME standard for the hazard analysis of valves. Thanks in anticipation.I would appreciate any reply.

Hi, I would like to know from this forum the equivalent British En standard for ASME-B 16.34.Also it will be very helpful if you can give me the ASME standard for the hazard analysis of valves. Thanx&Regards Cranekiran

Hi, Refer ANSI-B-16.34 in the Material vs Temp.ratings for a certain pressure class. You have to also see the relevant standard in API. Cheers!

Hi, I am working on pro/e since 3 years and still I have not been able to master the rounds. It's always resolve mode for me when it comes to rounds!!!! So,Don't worry ,you are not alone in your misery!!!! Cheers!

Hi, I am also under the impression that the globular shape of the body is responsible for the name. I don't know if that is the only reason.

Now, This is getting real funny!! Seriously,Mishall, what makes you think that limit switches are expensive? If your valves are operated by a gear box,You can install a limit switch so that every time the valve is opened or closed a signal can be sent to a timer.It is really simple...