How to Install an Anti-Siphon Vacuum Breaker Cover (Step-by-Step)

If your outdoor faucet sprays or drips every time you use it, installing a cover over the anti-siphon vacuum breaker is a quick fix — no tools, no plumbing experience, and no risk to the safety function of the device itself. Here's exactly how to do it.

What you'll need

• A Splash Guppie hose bibb cover (no tools required)

• That's it

Cloud White Splash Guppie

Step 1: Locate your anti-siphon vacuum breaker

This is the small cylindrical or boxy attachment between the wall (or pipe) and the faucet handle. If your outdoor faucet sprays when you turn it on, this is almost always the source.

Step 2: Remove any existing set screws

Some vacuum breakers come with small set screws meant to discourage removal (since removing the device entirely is against code in many areas). Before installing your cover, check for and remove any set screws sticking out, as these can prevent a snug fit.

Anti-Siphon Valve Set Screw

Step 3: Clip Splash Guppie onto the hose bib

Position the cover so it fits between the backflow device and the handle, then snap it into place. It's designed to clip on securely without tools or adhesive.

Splash Guppie Placement

Step 4: Rotate to your preferred orientation

Once clipped on, rotate the cover so the opening faces downward, or toward whatever direction keeps spray away from walkways, plants, or anywhere you stand while using the hose. This is the step most people skip — taking 10 extra seconds to get the orientation right makes a big difference in how well it keeps you dry.

Rotate for proper orientation

Step 5: Test it

Turn the water on briefly and watch where the water goes. Adjust the rotation if needed — it should sit snugly enough to stay in place, but you can still rotate it by hand.

Splash Guppie Guarding Spray

Tips for best results

• Near walkways: Orient the opening straight down so spray drips onto the ground, not onto foot traffic.

• Near garden beds: Aim it slightly toward the bed so excess water doubles as a small amount of extra watering.

• Multiple colors available: If the cover will be visible against your home's siding or trim, color options (like Cloud White or Crystal Clear) can help it blend in.

Troubleshooting

• It doesn't fit snugly: Double check that all set screws have been removed from the vacuum breaker first — these are the most common culprit.

• It still sprays a little: Some spray during the initial pressure change when first turning on the water is normal even with a cover; the goal is reducing where that water lands, not eliminating it completely.

• Still having trouble: Reach out through our [Contact page] and we're happy to help troubleshoot your specific setup.

That's it — a five-minute fix for a problem that, until now, you may have just been living with every time you watered the garden.