*PLUMBERSSTOCK EXPERT* responded:
Hello, there! Thank you for posting an inquiry on PlumbersStock.com. The measurements 1/2" x 1/4" are the nominal dimensions of this Watts LF PBQT-090 stop valve. If you are interested in purchasing this stop valve, simply click on Add to Cart and enter your information in the required fields and you are all set. Thank you for choosing PlumbersStock.com. Have a great day!