*PLUMBERSSTOCK EXPERT* responded:
Thank you for your interest in our product! The answer to your questions is yes. According to the manufacturer, this manifold and valve set-up has manual flow control. It is the center knob on the top of the valve. The “ F “ in DVF indicates a flow control. The manifold assembly is offered as both slip and FNPT. We hope this helps! Please refer to the specification sheet if you have more questions about the Rainbird 100DVF valve. Once you’ve made your selection, always remember to click Add to Cart to confirm your order, enter your zipcode and you’ll be all set! For availability inquiries, or to better understand lead and ship times, please contact one of our knowledgeable customer service representatives @ 435-868-4020 between 8:00 AM to 7:00 PM MT or through e-mail @ firstname.lastname@example.org. You can also sign up for our Newsletter!