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Hi, I am supposed to order a check valve to be used on a subsea pig reciver. the check valve is to be used when dewatering the pipeline when receiving the pigs. the valve is 4" on a 16" line. what would the cracking pressure be? Thanks, Leni

Thanks BigInch, Not being very good with fluid mechanics, I just cannot get my head around the flowrate calculation. Ok, basically, Q=AV (V being the flow velocity=pig velocity =2m/s and A the inner area)and since Q is the same therefore the water velocity in the branches of receiver will be in...

Thanks BigInch. Even though your reply still aplies, I thing I better describe more. It is a subsea receiver for pre-commissioning purpose. Each time a pig arrives to the receiver, it will push some water in front of it. This water will go to a 2" branch which is welded to the receiver and...

I am supposed to design a subsea pig receiver. There is a requirement to take the water and the MEG in front of the pig to the surface. My question: How should I size the header? By header I mean the pipe that the water from small branches on the big barrel flow into and will be connected to...