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I'm trying to pick out a new valve for my shower, and I'm pretty set on a Moentrol. Moen produces four differnet models:

  • Two 1/2" IPS Models: 3510 and 3550
  • Two 1/2" CC Models: 3520 and 3570

Their spec sheets are available at:

The only differences that I see in the specs are "integral checks" compared to "integral check stops"

Can someone please enlighten me on the differences between the 3510/3520 line and the 3550/3570 line?

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3570 has shut off valves on the valve itself. Allows you to swap out 1225 cartridge without shutting off water to house

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The difference is the connection to the valve. The 3520 is a copper connection that needs to be sweat together. The 3510 is a threaded connection

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