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.
As an Army infantryman, you'll need a combat score of 90, this score being determined by the sum of your ASVAB scores in arithmetic reasoning, coding speed, auto and shop information and mechanical comprehension.
Army Requirements to Join When joining the Army there are specific age, citizenship, academic, physical and legal qualifications that you must meet first! To qualify for enlistment into the Army, you need these minimum requirements. Age Requirements You must be between the the ages of 17 and 35 (unless you have prior U.S. military service, or a specialized professional skill, such as a chaplain, lawyer or certain medical specialties).