The polytubing side argues the following point and I kind of agree with that:
If the stainless steel tubing is run straight continuously nonstop to the air source. SS tubing might have a better reliability.
However, the reality is that the air source is about 30-50 ft away. It would take several...
Hello,
We are a chemical process plant in oil gas industry. There are lots of pneumatic on and off actuated valves in the system. (outdoor) The air comes from control cabinet directly. (PLC drives remote solenoid island IO)
Historically, we use SS316 tubings to connect valve actuators to the air...
It's a self priming centrifugal pump and is about 1 ft elevation below the truck. However, it just can't completely strip the hose and the unloading line.
Hi all, see attached picture, hopefully I make it reasonable.
The liquid needs constant temperature control, so the unloading pump is also used as circulation pump. We connect the hose to the truck liquid port and vapor hose to the vapor return port.
At the end of the unloading, the pump will...
Hi folks,
We have a very hazardous chemical for bulk handling. At the end of the unloading (from the truck to the storage tank), the hose still has some chemical in it. We have difficulties to purge the hose to a safe place. (not able to purge to the tank for certain reasons). We then turn the...
@robertjo24
@controlnovice
Does the last mile run to the instrument have to be in rigid metal conduit? I am thinking using EMT or even strut to reduce the cost. Will that be acceptable?
We have been using shielded ITC blue cable for intrinsically safe circuit.
It is running in cable tray for major long run.
However, when jumping off the cable tray, do those IS cables need to be run in conduit to get to the IS instruments? Is free-run cable allowed per code?
Thanks...
