I am just learning more details on control valves and its components. Since now I'm starting to see the real objects instead of on paper (P&ID), I've noticed things that I never thought of before such as:
1. Positioner on control valve. My understanding is so it's there to release/add air to...
I'm about to purchase several solenoid valves (will be used as an ON/OFF valve). My questions are:
1. can someone inform me more on the solenoid valve. i.e. why we use it, when to use it and when should we not use it
2. The flow I sent the vendor is in slpm, and the fluid is gas (don't ask me...