| There's no trick to using anti-syphon hose bib. Sounds like you dislodged some crud from the pipe walls when you installed the hose bib and it's now clogging up the valve. Try this. Shut the water off to the house and unscrew the hose bib bonnet packibg nut and back out the stem and washer assembly. Now turn the water back on to the house and flush out the supply line. Do you have a strong stream now? If so reassemble and try the hose bib again. regards, Tom |