From: nospam@invalid.com   
      
   scott@slp53.sl.home (Scott Lurndal) wrote in   
   news:CNSgR.191303$nAq6.138927@fx09.iad:   
      
   > Ed P  writes:   
   >>On 2/4/2026 2:56 PM, retired1 wrote:   
   >>> On 2/4/26 12:10 PM, Maria Sophia wrote:   
   >>>> Plumbing. Shutoffs. Inside the house. Even outside actually. Under   
   >>>> sink. Toilet. Why on earth are they rotate kind. When have you ever   
   >>>> in your 100 years life ever regulated the flow from the shutoff? It's   
   >>>> either on or off.   
   >>>> It's binary. Right? So why do they all NOT have quarter-turn ball   
   >>>> valves?   
   >>>>   
   >>>> Nobody in the history of indoor plumbing has ever said, 'Let me   
   >>>> precisely throttle my toilet fill valve using this crusty little   
   >>>> multi-turn shutoff'.   
   >>>>   
   >>>> So why are they ubiquitous?   
   >>>   
   >>>   
   >>> FWIW, before retiring, I owned 5 homes built before 1971 in 2 states.   
   >>> All had "rotary" shutoff valves. If they leaked then they were   
   >>> repaired not replaced. I only saw 1/4 turns at other newer homes, or   
   >>> repairs at older.   
   >>>   
   >>> My plumbing pet peeve is why do tubs and showers NOT have their own   
   >>> shutoffs of any kind ?   
   >>   
   >>My last two houses did.  This one does not.  Only reason I can think of   
   >>is cost for the valves and access panel.   
   >   
   > The multi-turn angle-stop used with most lav and toilets is   
   > significantly less expensive than the quarter-turn (ball) valves, which   
   > require machining at higher tolerances.   In standard housing   
   > developments, the developers are too cheap to use quality valves.   
   >   
   > As for showers, there's no easy (read inexpensive) way to provide   
   > access to the lines feeding the shower (unless they're in an   
   > unfinished basement).   An access panel would often need to be in   
   > the adjacent room, or exterior wall.   
   >   
   > 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.   
      
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