Pump PID diagram consultation

2017-09-27View Original

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Chemical Process Design Manual (Volume 2) Chapter 23 Typical Design of Basic Units of Piping and Instrument Flow Diagrams Page 24 What do the two parallel arrows (see the red circles on the diagram) above the PID diagram of the pump represent? Please give me some advice from the masters, thank you

Reply #22017-09-27

Pump body sewage pipe, used for pump maintenance and emptying the pump body when the equipment is out of service.

Reply #32017-09-28

The reducer is trapezoidal, what do the two parallel arrows point to?

Reply #42017-09-28

I didn't notice the two arrows. Just saw it now. I agree with the 2nd floor.

Reply #52017-09-28

Come and learn* Come on, I really didn’t pay attention to these two lines before.

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Pump PID diagram consultation

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