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Old 02-12-2025, 01:19 PM
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Quote:
Originally Posted by Bill14564 View Post
Mine can fill a one quart measuring cup in 10 seconds which means a 1.5gpm flow rate. (could actually be 1.2gpm but hard to measure that close)

If I read things correctly, there is a US limit of 2.2gpm max @ 60psi but many companies produce the 1.2gpm @ 60psi fixtures to conserve water. (my house was >60psi last I checked so maybe that's why my measurement was closer to 1.5gpm)

So it's possible your last fixture was 2.2gpm and now you are getting a little more than half the flow. However, it would still be worth it to see how much time it takes to run one quart of water. If it is more than ten seconds then your flow is less than 1.5gpm and you should look for another restriction.

Quick check - is the new valve you installed fully open?
Ok, I’ll time it, I sure the 20 plus year old delta had over 2.0 flow rate. I still got two in back so I’ll compare flow rate from them?

I will also check the shut off valves make sure they are fully open.