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Re-hydrotest for socket weld valve

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15 years 1 month ago - 15 years 1 month ago #7520 by darmao
Re-hydrotest for socket weld valve was created by darmao
Dear All,

I have with socket weld ball valves (below 1"). These valves supplied with the nipple and already tested. Finally we want add the nipple with slip on flange. I aware that after joint the flange onto the nipple, PT have to apply on the weld for final inspection. Now my question is shall we re-testing the valve because joint the flange by weld?
Many thank for share your view.

Darmao.

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15 years 1 month ago - 15 years 1 month ago #5037 by Jop
Replied by Jop on topic Re: Re-hydrotest for socket weld valve
Normally I would say no. However you did not tell us the details needed to be sure.
- What is the Commodity?
- What is the Operating Pressure?
- What is the Operating Temperature?
- What is the Design Code?
- What kind of plant is this?
Do it once and Do it Right

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15 years 1 month ago - 15 years 1 month ago #5042 by darmao
Replied by darmao on topic Re: Re-hydrotest for socket weld valve
All these 1/2"~3/4" are used for drain valve in fuel gas package. The rating is 1500#. Service temperature is -20 to 300 deg.F. The design code is based on API 6D.

Darmao

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