In sprinkler irrigation systems in hilly areas. pressure-regulating devices can improve the uneven pressure distribution on branch pipes and consequently improve the irrigation uniformity. A pressure-regulating device for sprinkler irrigation systems was developed; the variation characteristics of the internal pressure field and velocity field distribution over time. variation law of ... https://www.roneverhart.com/Easton-Black-Magic-2-0-Catcher-s-Box-Set-Youth/