VKS88
Mechanical
- Jan 12, 2020
- 1
Hello all,
i have one doubt regarding gate valve ( 1" 800# threaded end, body: astm b61 c92200, stem:ASTM B150 C63000) pressure test requirements which is made according to API 598 and MSS-SP-80.
AS PER API 598 , TABLE 1 LOW PRESSURE CLOSURE TEST HAS TO BE CONDUCTED
MSS-SP-80,7.3.2.1: These valve needs Shell test and seat test
MTC have details about shell test and Back seat test but Low pressure closure test is not done.
I told the supplier for justification and they replied that as per MSS-SP-80, low pressure closure test is not required.
In my understanding, MSS-SP-80 , 7.3.2.1 interpretation = seat test means back seat test and low pressure closure test.
Please correct me if i am wrong
i have one doubt regarding gate valve ( 1" 800# threaded end, body: astm b61 c92200, stem:ASTM B150 C63000) pressure test requirements which is made according to API 598 and MSS-SP-80.
AS PER API 598 , TABLE 1 LOW PRESSURE CLOSURE TEST HAS TO BE CONDUCTED
MSS-SP-80,7.3.2.1: These valve needs Shell test and seat test
MTC have details about shell test and Back seat test but Low pressure closure test is not done.
I told the supplier for justification and they replied that as per MSS-SP-80, low pressure closure test is not required.
In my understanding, MSS-SP-80 , 7.3.2.1 interpretation = seat test means back seat test and low pressure closure test.
Please correct me if i am wrong