T&S BRASS B-3406-VB SHOWER VALVE, 1/2" SWEAT ENDS, DIVERTER, SLIDE BAR, VB, 1.5 GPM

Hello, there! Thank you for posting a query about the Moen U140CIS valve. The threads of this tub/shower rough-in valve are a standard 1/2" IPS size. You can use this brass cap in order to stop the flow of any of the ports of your choosing. Don't forget the Teflon tape, you'll need it, or something like it to ensure a leak-free seal. We hope this helps! To purchase the brass cap, kindly follow the link provided, then hit "Add To Cart", fill in the required information, and we'll do the rest. Thank you so much for trusting PlumbersStock! Have a safe week!

Hi! Thank you for asking about the Moen U140CIS rough-in valve. Yes, you can cap off the bottom port of the valve to use it solely as a shower system. To order this rough-in valve, simply click the "Add to Cart'' button and supply the information needed. Thank you for contacting PlumbersStock and for the opportunity to be of service to you! Have a great day!