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.
To join the United States Marine Corps as an infantryman or, as that military occupational specialty is known in this branch of service, rifleman, you need a general technical score of 80 on the Armed Services Vocational Aptitude Battery.
1. Re: How do I become an infantry man ciananH33 May 12, 2011 3:13 PM (in response to McastilloJr) The minimal requirements to become a 11B Infantryman is: 18 years of age (17 with parents permission), 31 or higher scored on the ASVAB, and a highschool diploma or a GED with 15 or more 100% college level credits.