From: nospam@invalid.com   
      
   Ed P  wrote in   
   news:6984abb2$1$23$882e4bbb@reader.netnews.com:   
      
   > 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.   
   >   
      
   I see.  In other word, you have a running start.   
      
   Thanks.   
      
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