--- product_id: 1303660 title: "Vacum Breaker Kit A/S Ff" brand: "mueller b & k" price: "€ 21.03" currency: EUR in_stock: true reviews_count: 6 category: "Mueller B & K" url: https://www.desertcart.sk/products/1303660-vacum-breaker-kit-a-s-ff store_origin: SK region: Slovakia --- # Compact 1x2x1 inch size Precision NPT thread fit Durable brass construction Vacum Breaker Kit A/S Ff **Brand:** mueller b & k **Price:** € 21.03 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your faucet’s defense—don’t let leaks steal your peace of mind! ## Quick Answers - **What is this?** Vacum Breaker Kit A/S Ff by mueller b & k - **How much does it cost?** € 21.03 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/1303660-vacum-breaker-kit-a-s-ff) ## Best For - mueller b & k enthusiasts ## Why This Product - Trusted mueller b & k brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Brass Build:** Corrosion-resistant brass ensures long-lasting durability and leak-free performance - • **Easy DIY Replacement:** Compact design and included components make installation hassle-free—no plumber needed - • **Trusted by Pros & Homeowners:** Top-rated with 4.3 stars and a proven fix to avoid costly faucet replacements - • **Precision Thread Compatibility:** Fits Mueller silcock models #104-823HC to #104-849HC with exact reducer male NPT threads - • **Seamless Anti-Siphon Protection:** Prevents backflow with ASSE 1019A certified vacuum breaker ## Overview The Mueller B & K Vacuum Breaker Kit A/S Ff is a precision-engineered brass repair kit designed to restore anti-siphon and frost-free sillcocks. Compatible with a wide range of Mueller silcock models, it features exact reducer male NPT threading for a secure fit. This compact, durable kit prevents water backflow and leaks, extending faucet life and saving costly replacements. Highly rated and trusted by professionals, it’s the essential upgrade for any savvy homeowner or manager aiming to maintain flawless plumbing performance. ## Description Vacum Breaker Kit A/S Ff Review: Wow - Life is not easy and this part if not correct can waste some life. - First wanted to thank Elaine K for the 14-Jul-2015 Review. This reasonably assured me I had the correct part (Vacum Breaker Kit A/S Ff byMueller B & K). Hopefully more details and pictures will help others to not have the same trouble. This also saved me from replacing the entire faucet. I bought my Mueller silcock from home depot probably about 15 years ago. Mine is a Mueller you can see the big sideways "M" with an upside down triangle above it in the picture. The front view (red dial) may be the model number? I found that for my faucet the ProLine 888-576HC part was correct and functioned perfectly. When you remove the old part you will see that the threads on the plastic piece do not go all the way to the bottom. There is a flat, narrower, piece of the tube that has no threads. The threads may be a good way to identify the correct part. This part, fit in my faucet and came in the bag labeled 888-576HC. The part bag labeled 888-183 did not fit. This part has threads all the way down to the bottom of the tube that screws into the faucet. The threads were slightly larger and absolutely would not screw in to my faucet. I tried for about 45 minutes before giving up after realizing I was not cross threading the piece. The person from home depot handed me this 888-183 part very quickly when I stated what I needed. This made me feel that it was the correct part. I also figured the part that home depot was selling would be the correct part because I bought it there. Wrong! Afterwards, I saw online, that they do not stock the Mueller part. My symptoms - I noticed over the last five or so years that I was getting water weeping out of the top cap on the faucet (silcock). I ignored it because it was not too bad and it only leaked when I was using the faucet. This year however it was a slow but steady stream of water escaping. I attached a picture of the old plastic piece that mounts in the faucet. The black washer faces up. You can see in my picture that the rubber is hard and cracked. This is what was most likely causing the leak and tightening the pieces will not fix this. This piece is the same in both parts I tried. You may be able to just replace the rubber washer or this part and fix your leak. There were others that posted they bought the wrong part but used only this plastic and black washer piece to correct the issue. Other advice do not use tools to tighten this piece or try to fix the leak by tightening. Try just hand tightening when installing or lightly tighten if you do not have a strong grip. The plastic will snap easily. I used some teflon tape around the threads that mate to the faucet, like others have suggested. I did not notice any from the factory and it may not be needed. Review: Perfect fit for ASSE 1019A - Look at the pictures I posted. If your dimensions match then, Do your research, not just read reviews, also read answers, post a question, if you need to, Then get this. I learned the hard way that breaking this thing, is like having pain behind your ear lobe :D It's real bad and you must fix it correctly or it will keep coming back.. I had to go through 3 different ones before finding the right one. Because at this time of writing, there are no vendors or products that tell you the exact height, thread size etc. HD and Lowes, both stated if it's a generic, "may be I can find a definite match" at Builder supply store. But unless you have a pro account, I don't think you can get anything from those stores. Anyway after getting two different Anti Siphon Sillcock replacements (one costed more, another less) and Several answers later I purchased it. Unless there is a clear picture of the product and it doesn't look like yours - avoid it. Even if it says ASSE 1019A it may not match. Check for the inner diameter. One thing though.. if only your vaccum breaker broke (the small piece, which looks like a crown - if kept upside down |U|U|U|U|U| and has a plastic dot. That is what breaks away, that piece is same across several of these) you can use that to replace your breaker and just throw away the rest. However, I would not recommend, because if your breaker broke and the thing started leaking, chances are the outer part that holds the breaker into your sillcock body, would also break soon as plastic ages out. So it's better to get the right size, and replace the whole thing. In my case as you see in pictures it was ASSE 1019A. The sillcock with thread dia was very close to 20 mm and has a small neck after threads end, that's where its about 18mm. Hope that helps! ## Features - Vacuum Breaker Repair kit for anti-siphon and frost free sillcock - Fits Models # 104-823HC thru 104-829HC and 104-843HC thru 104-849HC Replacement parts for Catalog id: 42928654, 40696294, 42704174, 42928654, 40696316, 42928652, 42901663, 42928651 42979706 - Carded - Material: Brass ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00GRAAV4W | | Best Sellers Rank | #40,250 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,220 in Pipe Fittings | | Brand Name | Mueller B & K | | Color | Brass | | Connector Type | Cap | | Customer Reviews | 4.3 4.3 out of 5 stars (383) | | Exterior Finish | Brass | | Global Trade Identification Number | 00032888149915 | | Included Components | B&K - 888-576HC | | Item Dimensions | 1 x 2 x 1 inches | | Item Type Name | B&K - 888-576HC | | Item Weight | 0.01 Ounces | | Manufacturer | Mueller B & K | | Manufacturer Warranty Description | Warranty | | Material Type | Brass | | Model Number | B&K - 888-576HC | | Number of Pieces | 1 | | Size | Pack of 1 | | Thread Size | Reducer Male | | Thread Type | NPT | | UPC | 032888149915 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Mueller B & K - **Color:** Brass - **Connector Type:** Cap - **Exterior Finish:** Brass - **Item Weight:** 0.01 Ounces - **Item dimensions L x W x H:** 1 x 2 x 1 inches - **Material:** Brass - **Size:** Pack of 1 - **Thread Size:** Reducer Male - **Thread Type:** NPT ## Images ![Vacum Breaker Kit A/S Ff - Image 1](https://m.media-amazon.com/images/I/21ohXRzQ7dL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Wow - Life is not easy and this part if not correct can waste some life. *by M***Y on July 27, 2025* First wanted to thank Elaine K for the 14-Jul-2015 Review. This reasonably assured me I had the correct part (Vacum Breaker Kit A/S Ff byMueller B & K). Hopefully more details and pictures will help others to not have the same trouble. This also saved me from replacing the entire faucet. I bought my Mueller silcock from home depot probably about 15 years ago. Mine is a Mueller you can see the big sideways "M" with an upside down triangle above it in the picture. The front view (red dial) may be the model number? I found that for my faucet the ProLine 888-576HC part was correct and functioned perfectly. When you remove the old part you will see that the threads on the plastic piece do not go all the way to the bottom. There is a flat, narrower, piece of the tube that has no threads. The threads may be a good way to identify the correct part. This part, fit in my faucet and came in the bag labeled 888-576HC. The part bag labeled 888-183 did not fit. This part has threads all the way down to the bottom of the tube that screws into the faucet. The threads were slightly larger and absolutely would not screw in to my faucet. I tried for about 45 minutes before giving up after realizing I was not cross threading the piece. The person from home depot handed me this 888-183 part very quickly when I stated what I needed. This made me feel that it was the correct part. I also figured the part that home depot was selling would be the correct part because I bought it there. Wrong! Afterwards, I saw online, that they do not stock the Mueller part. My symptoms - I noticed over the last five or so years that I was getting water weeping out of the top cap on the faucet (silcock). I ignored it because it was not too bad and it only leaked when I was using the faucet. This year however it was a slow but steady stream of water escaping. I attached a picture of the old plastic piece that mounts in the faucet. The black washer faces up. You can see in my picture that the rubber is hard and cracked. This is what was most likely causing the leak and tightening the pieces will not fix this. This piece is the same in both parts I tried. You may be able to just replace the rubber washer or this part and fix your leak. There were others that posted they bought the wrong part but used only this plastic and black washer piece to correct the issue. Other advice do not use tools to tighten this piece or try to fix the leak by tightening. Try just hand tightening when installing or lightly tighten if you do not have a strong grip. The plastic will snap easily. I used some teflon tape around the threads that mate to the faucet, like others have suggested. I did not notice any from the factory and it may not be needed. ### ⭐⭐⭐⭐⭐ Perfect fit for ASSE 1019A *by R***Y on August 14, 2020* Look at the pictures I posted. If your dimensions match then, Do your research, not just read reviews, also read answers, post a question, if you need to, Then get this. I learned the hard way that breaking this thing, is like having pain behind your ear lobe :D It's real bad and you must fix it correctly or it will keep coming back.. I had to go through 3 different ones before finding the right one. Because at this time of writing, there are no vendors or products that tell you the exact height, thread size etc. HD and Lowes, both stated if it's a generic, "may be I can find a definite match" at Builder supply store. But unless you have a pro account, I don't think you can get anything from those stores. Anyway after getting two different Anti Siphon Sillcock replacements (one costed more, another less) and Several answers later I purchased it. Unless there is a clear picture of the product and it doesn't look like yours - avoid it. Even if it says ASSE 1019A it may not match. Check for the inner diameter. One thing though.. if only your vaccum breaker broke (the small piece, which looks like a crown - if kept upside down |U|U|U|U|U| and has a plastic dot. That is what breaks away, that piece is same across several of these) you can use that to replace your breaker and just throw away the rest. However, I would not recommend, because if your breaker broke and the thing started leaking, chances are the outer part that holds the breaker into your sillcock body, would also break soon as plastic ages out. So it's better to get the right size, and replace the whole thing. In my case as you see in pictures it was ASSE 1019A. The sillcock with thread dia was very close to 20 mm and has a small neck after threads end, that's where its about 18mm. Hope that helps! ### ⭐⭐⭐⭐ Wrong size but worked anyway *by R***L on May 28, 2023* Ordering these parts is hit or miss regarding the size. The outer body didn't fit (threaded part too small) but the inner part with the rubber gasket looked like an identical match so I swapped it in and... Works perfectly. At least for now. ## Frequently Bought Together - Vacum Breaker Kit A/S Ff - Eastman Vacuum Breaker Repair Kit, 45417 - Homewerks VACVBKX1B Vacuum Breaker Replacement Kit for Traditional Anti-Siphon Frost-Free Sillcock Valves --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/1303660-vacum-breaker-kit-a-s-ff](https://www.desertcart.sk/products/1303660-vacum-breaker-kit-a-s-ff) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-19*