Butterfly valve
Butterfly valve
(OP)
Dear Friends,
We have some stock butterfly valves purchased from a company in Korea. The company is completely closed now. The name plates of the valves has no value on pressure value @ 100 Deg F. Our client informed us to punch the pressure value as per the standard & deliver the vale to them. I referred the standard & have taken the below pressure values. Please help me if I am correct:
A216 WCB body with PTFE seat - Pressure rating @ 100F is 285 PSI based on ASME B16.34. Is this correct
A351 CF8 body with PTFE seat - Pressure rating @ 100F is 275 PSI based on ASME B16.34. Is this correct
B148 C95800 body with PTFE seat - Pressure rating @ 100F is 195 PSI based on ASME B16.24. Is this correct
A126 CLB body with NBR seat - I do not know the Pressure rating @ 100F. Can any one help me
We have some stock butterfly valves purchased from a company in Korea. The company is completely closed now. The name plates of the valves has no value on pressure value @ 100 Deg F. Our client informed us to punch the pressure value as per the standard & deliver the vale to them. I referred the standard & have taken the below pressure values. Please help me if I am correct:
A216 WCB body with PTFE seat - Pressure rating @ 100F is 285 PSI based on ASME B16.34. Is this correct
A351 CF8 body with PTFE seat - Pressure rating @ 100F is 275 PSI based on ASME B16.34. Is this correct
B148 C95800 body with PTFE seat - Pressure rating @ 100F is 195 PSI based on ASME B16.24. Is this correct
A126 CLB body with NBR seat - I do not know the Pressure rating @ 100F. Can any one help me





RE: Butterfly valve
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RE: Butterfly valve
If you mark the valves without a proper test or any other proof that the valves actually ar constructed, fabricated and tested for theese pressure values you will have a large juridical responsibility.
RE: Butterfly valve
These valves are flanged ends, 3,4,6,8,10 inches & class 150. We do have MTR but the pressure rating is not mentioned.
Dear gerhardl,
Our client requires these valves urgently & they have officially informed us to punch the pressure values.
RE: Butterfly valve
If they fail in service, it's your name and stamp, not some worthless e-mail from the client that counts....
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Butterfly valve
Client (End user) consist of:
1. End user (Operation)
2. Procurement,
3. Valve Engineer (and Inspection department)
4. Incoming goods inspection,
In a very odd case, all of them (at least 1 & 3) will sign the deviation / derogation and accept your valve (assuming you are distributor with certified quality standards). However further assessment for the existing valve (PMI testing, Pressure testing, etc.) should be commenced. Other mitigation should be applied as well
Incoming goods department is a very SOP minded personnel, they will surely assess all the certificates related prior acceptance.
Operation especially the veteran ones are ingenuity people who often thinks that if it is not critical (from their Point of View), they seldom accept anything as long it comfy their Project / delivery window.
Procurement is likely to be only the SAP input personnel. Their KPI is delivery time and price (should this valve to be Lloyd tested of course will add additional time and price). I never see procurement direct KPI related to quality of the valve in detail
Valve engineer (along with Material and Inspection dept) are the ones who has a rope tied in their neck for the next 5 years (at least) shall the valve goes totally wrong (during operation).
Never seen this before. However yes, times are changing. IMHO, Distributor often use (refer to contract) standard valve delivery times is 24-40 weeks, thus End user always offered with alternatives. And to be honest the case is getting more complex each time. Especially for a growth scope found on the latest project (shortage of money and limited lead time).
If this valve going into my Plant, I will reject it straight away. I may change my mind if only it is re-PMI tested by Lloyd or else, Re-CE marked, Re-tested.
Regards,
MR
Greenfield and Brownfield have one thing in common; Valve(s) is deemed to "run to fail" earlier shall compared to other equipments
RE: Butterfly valve
RE: Butterfly valve
Stamping these without tests would be quite unethical.