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Interpretting Old Pipe Stencils
The 4" pipe this stencil came from is ERW. We could see the weld when we exposed it.- francitj
- Post #16
- Forum: Pipelines, Piping and Fluid Mechanics engineering
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Interpretting Old Pipe Stencils
Unclesyd- It's a steel lateral off a transmission gas line. We are pretty sure about late 60s early 70s timeframe. BigInch- For years that's what our records have indicated... unknown grade. The DOT allowable assumed grade of 24,000 has always been acceptable, but with the PHMSA bulletins...- francitj
- Post #6
- Forum: Pipelines, Piping and Fluid Mechanics engineering
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Interpretting Old Pipe Stencils
I need help interpretting old pipe stencils. We recently uncovered a lateral laid in the 60s and found the stencil detailing the pipe specs. The stencil read as follows: 4 1/2OD 188WALL EB5 ON J1745 LOT 1033 (possbily 1088) The stencil repeated over and over along the joint. Clearly its 4.5"...- francitj
- Thread
- Replies: 18
- Forum: Pipelines, Piping and Fluid Mechanics engineering
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Unknown C1 and CV of Valve
We have several different applications for piston and swing style check valves. The valves we purchased came with a cracking pressure provided by the manufacturer but no C1 and CV values, or any values for when the valve is cracked to full open and we need to calculate the flow through these...- francitj
- Thread
- Replies: 3
- Forum: Valve engineering
