On 2/5/2026 12:33 AM, Boris wrote:   
      
   >>   
   >> The standard angle-stop will last much longer if it is used   
   >> regularly (to clear any hard-water buildups), open it only   
   >> to 90% rather than 100% to reduce the chances that hard-water   
   >> scale will cement the valve.   
   >>   
   >   
   > So you're saying with an angle-stop valve, open and close once or twice a   
   > year? to flush out any minerals?  Why leave open only 90%?  How does that   
   > reduce hard-water scale buildup?   
   >   
   > Thanks.   
      
   If you get buildup in a fully open valve, you have to use force in one   
   direction to close it.  If you leave it at 90%, you have some room to   
   wiggle to loosen.   
      
   --- SoupGate-Win32 v1.05   
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