An ASSE 1019-A repair kit refreshes the vacuum breaker on a frost-free outdoor faucet so you can stop leaks and protect your water supply.
When the small cap on your anti-siphon hose bib starts leaking, dribbling, or even blows off, the vacuum breaker in an ASSE 1019 wall hydrant is failing. Fixing that small assembly keeps the faucet from freezing, keeps dirty water out of your drinking lines, and often costs less than swapping the entire hydrant.
Many homeowners start by typing asse 1019-a repair kit home depot into a search bar and run into a wall of similar looking parts. Home Depot does stock several vacuum breaker kits that meet ASSE 1019, but each one is built for a specific sillcock style, so the real task is matching the kit in your cart to the faucet on your wall.
What ASSE 1019-A Means For Your Outdoor Faucet
Quick context ASSE 1019 is a plumbing performance standard for wall hydrants with built-in backflow protection and freeze resistance. These devices feed hose connections outside your house while keeping contaminated water from pulling back into your potable supply when pressure changes in the piping.
Under the standard, a wall hydrant must include at least two layers of backflow protection: an air inlet that opens to break siphon when pressure drops and an internal check valve that blocks water if pressure pushes back toward the building. Wall hydrants built to ASSE 1019 are also designed to drain internally when you shut the handle off, which protects the body from freezing as long as the hose is removed so water can escape.
The vacuum breaker assembly at the top of the faucet supports both the backflow protection and the draining function. A cracked cap, stiff plunger, or flattened O-ring can leave the air inlet stuck in the wrong position, which shows up as leaks at the top, noisy sputtering when you shut the water off, or poor draining before a hard freeze. Many plumbing codes call for devices that meet this standard.
Can You Buy An ASSE 1019-A Repair Kit At Home Depot?
Main idea ASSE 1019-A is a performance rating, not a brand or model number. Home Depot does not sell a single universal kit with that exact label. Instead, the store carries vacuum breaker repair kits from makers such as Everbilt, ProLine, SharkBite, Prier, and Aqua-Dynamic that are built for specific frost-free sillcocks and many of those assemblies are tested to ASSE 1019.
Several different vacuum breaker shapes appear on ASSE 1019 wall hydrants. Caps can be tall or low, with coarse or fine threads, and the plungers and seals inside vary in length and seat design, so two kits that both mention ASSE 1019 can still be slightly different in size.
The most reliable approach is to remove the old vacuum breaker assembly, take it to your local Home Depot, and compare it directly to the repair kits on the wall. Staff can help you check thread pitch, overall height, and the shape of the sealing surfaces so you leave with a part that matches your faucet.
Parts Inside An ASSE 1019-A Vacuum Breaker Repair Kit
Quick overview Packaging and brand names still vary, and most ASSE 1019-A repair kits include the same basic pieces. Knowing what each one does makes diagnosis easier and helps you confirm that the kit in your hand will fix the leak on your faucet.
- Cap body The visible shell that threads onto the top of the sillcock, holds the internal parts, and provides the small side vents.
- Plunger or poppet A moving part that drops to open the air inlet when pressure falls and lifts to seal during normal use.
- Spring A small coil that pushes the plunger into position so air can move freely during draining and the valve reacts quickly.
- O-ring and washers Rubber seals that keep water from leaking around the cap threads and at the plunger seat.
- Handle and screw Some complete kits add a replacement handle and fastener so you can refresh worn or corroded hardware.
| Part | Function On Faucet | Common Symptoms When Worn |
|---|---|---|
| Cap body | Holds vacuum breaker pieces and vents to atmosphere | Water spraying from vents, cap cracking or blowing off |
| Plunger | Opens to air when pressure drops, seals during use | Intermittent dripping from top after shutoff, noisy chatter |
| O-ring | Seals around threads and internal seat | Slow weeping around cap threads during use |
How To Choose The Right ASSE 1019-A Repair Kit Home Depot Option
First step Identify the brand and model of your existing wall hydrant before you focus on the words printed on the casting. Look for a name on the handle, a stamp on the flange, or a model tag in the mechanical room where the pipe passes through the wall.
Once you know the brand family, match that name to the repair kits on the Home Depot shelf or product listing. Makers publish part numbers for specific models, and when a kit and your hydrant share a brand and series, the chances of a correct fit rise compared with shopping only by the ASSE marking.
Then compare the physical details of the old vacuum breaker to the new one. Check whether the threads are coarse like a garden hose or finer and closer together, and compare the height and base diameter so the air inlet seats in the same place.
For a stubborn case, take the old parts with you in a small bag and line them up against the candidates on the rack. Staff at the plumbing aisle can help you test a few sample kits on your cap to see which threads start cleanly and which seat flush on the body, which is more reliable than guessing online based on the phrase asse 1019-a repair kit home depot alone.
Step-By-Step Guide To Replacing The Vacuum Breaker
Safety check Work on the faucet only when the water is shut off and the line has been depressurized. Close the indoor shutoff, then open the outside faucet to drain the line.
- Shut off the water Close the valve feeding the wall hydrant or the main shutoff, then run the outside faucet until flow stops.
- Remove the handle Back out the handle screw, slide the handle off the stem, and set it aside.
- Unscrew the old cap Grip the vacuum breaker cap by hand or with a padded adjustable wrench and turn it counterclockwise until it comes free.
- Clean the threads Wipe the exposed threads with a rag, remove mineral build-up, and look for cracks around the opening.
- Prepare the new kit Lay out the cap, plunger, spring, and O-rings, assemble them as shown in the instructions, and make sure the plunger moves freely.
- Install the new cap Wrap a light turn of Teflon tape on the body threads if the instructions call for it, start the new cap by hand, and snug it until the gasket seats.
- Reinstall the handle Place the handle back on the stem in the same position and tighten the screw until the handle feels solid.
- Turn water on and test Slowly reopen the indoor shutoff, close the outdoor faucet, then run the hydrant while watching the vacuum breaker for drips.
During the test you may see a brief splash from the air inlet ports when you first shut the faucet off. Ongoing leaks, a steady stream from the cap vents, or a cap that lifts under pressure point to a mis-match in parts or a damaged hydrant body.
After the repair, remove hoses before freezing nights and avoid keeping timers, splitters, or closed nozzles under full pressure for long periods, since that condition wears out seals and stresses the backflow parts inside the faucet.
When A Full Wall Hydrant Replacement Makes More Sense
Big picture A repair kit is the right tool when only the vacuum breaker or handle is damaged and the hydrant body and stem are still sound. In some cases, though, putting fresh parts on an older or low-cost unit only delays the next failure, so it helps to look over the rest of the faucet and the way it was installed.
Long cracks along the body, heavy corrosion where the faucet passes through the wall, or leaks inside the house where the pipe connects to the hydrant point toward replacement instead of repair. If the valve no longer shuts off cleanly or the stem wobbles loosely, the wear has moved beyond the vacuum breaker and into the main working parts of the hydrant.
Cost comparison also matters. Some branded ASSE 1019 repair kits plus shipping fees add up to nearly the price of a new frost-free hydrant from the same store. When the price gap is narrow, many homeowners choose to install a fresh assembly from a trusted brand and start the clock again on service life.
Access also matters. If the piping behind the wall hydrant is easy to reach from an unfinished basement or crawlspace, swapping in a new faucet with modern backflow protection is a realistic weekend project. Tight, hidden, or crowded spaces are better handled by an experienced plumber.
Practical Buying Tips And Alternatives If Stock Is Limited
Store strategy When you walk into Home Depot with an ASSE 1019 wall hydrant part in your hand, head straight to the plumbing aisle where frost-free outdoor faucets and repair kits hang together. Lay your old vacuum breaker next to each candidate and check thread style, cap height, and vent layout before you pick a kit. That small check at the shelf saves repeat trips.
If local stores are out of the kit you need, online listings open up more options. Many sellers offer two-pack and four-pack ASSE 1019-A repair kits that bundle vacuum breaker caps, plungers, and seals for common frost-free sillcocks. These kits often mention compatibility with outdoor faucet models sold through big-box chains, and they can be a handy backup when local stock is thin.
When comparing online options, read the fine print for notes about coarse threads versus fine threads, cap diameter, and whether the kit includes only the vacuum breaker or also a replacement handle and stem hardware. Look closely at product photos, count the holes in the cap, and check whether the vent pattern on the new part lines up with the one on your faucet.
For houses with several similar wall hydrants, keeping a spare kit on the shelf in your utility room is a simple way to avoid mid-season surprises. A basic vacuum breaker repair kit takes up little space, costs much less than repairing water damage, and lets you fix a minor leak quickly instead of shutting off an entire outdoor water line during garden season, which keeps outside tasks running on schedule for you.