To reduce water pressure or flow specifically in a shower, you can take several targeted steps. Step 1: Check if the showerhead is equipped with a built-in water-saving flow restrictor or washer disc, and ensure it is installed correctly. Step 2: Partially close the individual hot and cold water mixing valves or service stops if your shower setup includes them behind an access panel. Step 3: If the entire house pressure is too high, adjust your main pressure reducing valve (PRV) downward. Verification: Turn on the shower and observe the spray force to confirm a comfortable, controlled stream of water.
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