div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=valve-techniquehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Valve Technique loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentinreader036viewer2022082602577c7efd1a28abe054a2bdcdhtml5thumbnails1jpg width=140 height=200 divp8172019 Valve Techniquep phttp:slidepdfcomreaderfullvalve-technique 11pdiv