How to remove plastic back flow preventer on outdoor faucet?




we have plastic backflow preventer on outdoor faucet. It does not have any screws. How to remove it ?

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I would say it just unscrews off the faucet. Use a pair of pliers to unscrew it.
Here you go! Good luck with your project!
https://www.bing.com/videos/search?q=How+to+remove+plastic+backflow+preventer+on+outdoor+faucet.&qpvt=How+to+remove+plastic+backflow+preventer+on+outdoor+faucet.&FORM=VDRE
Use a good heavy duty wrench to take off..these r a pain and restrict your water flow
If your referring to the removing the inside portion, I get needle nosed pliers and just twist it out.