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.
Before you apply, you should think about whether you want to join as an infantry soldier or as a territorial soldier. You can join the Territorial Army from the age of 17 and you will be paid to participate in training in your spare time.The benefit of this is that you can combine being in the TA with a civilian life, although it is possible that you could be called to serve overseas as a TA.efore you apply, you should think about whether you want to join as an infantry soldier or as a territorial soldier. You can join the Territorial Army from the age of 17 and you will be paid to participate in training in your spare time.