I guess I'm not that fussy, but I've never had any trouble with ball valves. I just close the valve until I see a few bubbles coming from the emergency outlet. I ran a ball valve on my first tank and I couldn't see the point in spending the extra money on gate valves when I set up my second tank. Once they're set I never touch them. 
		
	
		
		
		
		
		
	
		
		
	
	
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