RE: Motor Operated Valve. The head of the operator is often shown as M inside a square. The limit switches ZSC/ZSO is acceptable under ISA. I have never seen ZSH/ZSL (high and low for a linear valve I suspect) in my industry. If the valve is used for on/off, it usually takes a XV or UV tag name. If the valve is used for regulatory control application, then they would take the normal PV, FV, TV type of designation. I have also seen HV for operator control only valves.
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Air Force. The United States Air Force accepts high school graduates. The minimum ASVAB score is 36. In actual practice, though, more than 70% of those accepted for enlistment score a 50 or higher.Army. The United States Army accepts both high school graduates and GED holders. The minimum ASVAB score is 31.Certain enlistment bonuses require a score of 50 or higher.he United States Air Force accepts high school graduates. The minimum ASVAB score is 36. In actual practice, though, more than 70% of those accepted for enlistment score a 50 or higher. Army. The United States Army accepts both high school graduates and GED holders. The minimum ASVAB score is 31.