On the PID diagram, the pump inlet appears to be a type of throttling device – what does that mean?
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Pump inlet, like a flow control orifice plate? Is it a orifice plate?
It looks similar to a flow control orifice plate, but it’s still better to refer to the legend on the first page of the drawings for accuracy
It looks like a orifice plate, but you’d better take a look at the legend
Right, there’s a legend on the drawing to explain it; take a look to see what this actually is
It should be a filter screen; the orifice plate usually consists of two line segments
A temporary filter or strainer cannot be a perforated plate
Flow meter, differential pressure orifice plate flow meter
I was wrong; it should be a pipe filter
Let’s start by looking at the PID diagram from the front... Many symbols or codes are explained earlier on, including those related to instruments and cascade control. Each company or design firm uses different symbol codes...