--- product_id: 310867961 title: "Cherne 270040 Rubber Test Ball Pipe Plug, 4\", Black" brand: "cherne" price: "370 zł" currency: PLN in_stock: true reviews_count: 5 category: "Cherne" url: https://www.desertcart.pl/products/310867961-cherne-270040-rubber-test-ball-pipe-plug-4-black store_origin: PL region: Poland --- # 13 PSI pressure rating Zinc-plated steel chain anchor 4" inflatable rubber plug Cherne 270040 Rubber Test Ball Pipe Plug, 4", Black **Brand:** cherne **Price:** 370 zł **Availability:** ✅ In Stock ## Summary > 🔧 Seal the deal with confidence — the ultimate pipe plug for pros who demand precision! ## Quick Answers - **What is this?** Cherne 270040 Rubber Test Ball Pipe Plug, 4", Black by cherne - **How much does it cost?** 370 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/310867961-cherne-270040-rubber-test-ball-pipe-plug-4-black) ## Best For - cherne enthusiasts ## Why This Product - Trusted cherne brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Secure & Safe Operation:** Zinc-plated steel chain and ring prevent accidental plug loss or slippage. - • **Versatile Access Master:** Fits through test tees, sanitary tees, floor drains, and other hard-to-reach pipe openings. - • **Universal Fit, Zero Hassle:** Inflatable design adapts to round & out-of-round pipes effortlessly, perfect for tight spots. - • **Pressure-Tested Reliability:** Handles up to 13 PSI or 30 ft. head pressure to ensure leak-proof plumbing systems. - • **Built to Last, Built to Perform:** Natural rubber body with excellent memory for repeated, durable use. ## Overview The Cherne 270040 Rubber Test Ball Pipe Plug is a 4-inch inflatable rubber plug designed for testing drain, vent, and waste systems. Rated for pressures up to 13 PSI, it features a durable natural rubber body with excellent expansion memory and a zinc-plated steel chain for secure handling. Its versatile design fits both round and out-of-round pipes and navigates tight plumbing spaces with ease, making it an essential tool for professional-grade plumbing diagnostics. ## Description Cherne 270040 Rubber Test Ball Pipe Plug, 4", Black : desertcart.ae: Tools & Home Improvement Review: Perfect for performing leak tests. My plumber recommended this to test a drain seal and it worked perfectly. Review: Used these to plug vent and sink while forcing pressurized water through cleanout to unclog the drain line and worked like a charm. Really handy tool to have. ## Features - 4" RUBBER TEST-BALL PLUG: Tests drain, vent, and waste systems in every type of pipe, and it is ideal for testing DWV plumbing systems at pressures up to 13 PSI or with 30 ft. of head pressure - BROAD EXPANSION RANGE: Inflatable design fits easily in tight situations, offering broader expansion range than mechanical plugs - VERSATILE USES: Can seal both round and out-of-round pipe, and it fits easily through test tees, sanitary tees, floor drains, and other hard-to-access pipe openings - ZINC-PLATED STEEL CHAIN AND RING HANDLE: Act as an anchor to prevent the plug from sliding down or being drawn into a line for convenient use - LONG-LASTING AND DURABLE : Natural rubber body offers excellent expansion and memory as well as long-lasting durability so you can test plumbing systems with confidence.Made of natural rubber for excellent expansion and memory..Seals both round and out-of-round pipe..Zinc-plated steel chain and ring handle acts as an anchor to prevent plug from sliding down a line..Fits easily through test tees, sanitary tees, floor drains, and other "tight" situations..Size 4 in ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000VYL5AE | | ASIN | B000VYL5AE | | Batteries Included? | No | | Batteries Required? | No | | Color | Black | | Country of origin | China | | Customer Reviews | 4.5 4.5 out of 5 stars (767) | | Customer reviews | 4.5 4.5 out of 5 stars (767) | | Date First Available | 1 January 2024 | | Date First Available | 1 January 2024 | | Department | 9207 | | Included components | (1) 4 in. Rubber Test Ball Pipe Plug | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 318 g | | Item model number | 270040 | | Item model number | 270040 | | Manufacturer | Cherne | | Manufacturer | Cherne | | Material | Rubber | | Measurement System | inch | | Number Of Pieces | 1 | | Part number | 270040 | | Product Dimensions | 10.16 x 8.89 x 15.88 cm; 317.51 g | | Product Dimensions | 10.16 x 8.89 x 15.88 cm; 317.51 g | | Size | 4 Inch | | Style | Chain | ## Product Details - **Brand:** Cherne - **Colour:** Black - **Item weight:** 0.7 Pounds - **Material:** Rubber - **Product dimensions:** 19.1W x 17.3H centimeters ## Images ![Cherne 270040 Rubber Test Ball Pipe Plug, 4", Black - Image 1](https://m.media-amazon.com/images/I/61z9yZh87RL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: I just ordered the 4” ball and hoping it will expand large enough to fill a 5 1/2” pipe. Will this work or do you have a bigger one?** A: I bought some pills that claimed they could expand my 4" tool to 5.5". We're both out of luck, buddy. **Q: how is this product filled with air? can you use a bicycle tire air pump or must it be an aircompresor?** A: We used a portable air tank, that we filled at the local gas station. The fitting is for a car tube type valve, not sure if a bicycle pump has the same fitting, but if so it should inflate the product. We have such confidence in this that we have purchased another one just as a stand by. **Q: How big does this inflate to. I have an old size that is 5 terocada pipe. Would this be able to plug that pipe?** A: 4.25" is max for a 4" plug **Q: Would this product create an air tight seal?** A: I filled a 4" sewer line up with water and plugged it with the test ball plug and had no leakage. So it works well for water. There was no pressure in the line, so if you are talking about air pressure and how much, not sure if it was designed for that. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***Y on 14 October 2025* Perfect for performing leak tests. My plumber recommended this to test a drain seal and it worked perfectly. ### ⭐⭐⭐⭐⭐ Review *by J***A on 27 April 2023* Used these to plug vent and sink while forcing pressurized water through cleanout to unclog the drain line and worked like a charm. Really handy tool to have. ### ⭐⭐⭐⭐⭐ Review *by O***N on 30 January 2021* For cleaning the upper rim when using a brush and cleaner won't do. A bit pricey for what it does, but I imagine it will last for decades. It has a standard valve (like a car tire). Flush the toilet, turn off the intake water. Stick this in the hole. Inflate it a bit, not a lot, maybe one or two pumps for a firm fit. Obviously the valve stem is facing out, towards you. Now fill the toilet with CLR up to the rim of the toilet, one or two containers, maybe topping it off with some water to get the water/CLR level up above the overhang. (The more you dilute the CLR with water the longer it will take to clean: I used two gallons) Let it sit for five or six hours. The CLR will eat away all the junk and hard water lime deposit that has accumulated over time. When you are done, stick a pencil or other thin object in to deflate the plug, the way you would let air out of a tire. As the plug loosens, which takes only a few seconds, you can pull it out. And the water level in the bowl will fall to its normal level. Turn the supply valve on again. When the tank is full flush the toilet and say goodbye to all the CLR. The toilet bowl should be clean. This is how you get the rim. If you have lime deposit at the bottom of the toilet you don't need this thing. Just turn off the supply valve, flush, and fill with CLR. That will take care of the bottom of the toilet bowl. But to get the whole bowl right up to the rim (past the rim jets that fill the bowl from the sides), you need something like this stopper technique. I have seen people recommending using a balloon filled with water to stop up the toilet hole but I did not want to chance having the thing pop and getting rubber stopped up in the drain pipe. This plug device is solid and is to big to flush. (The plug has other applications in high pressure plumbing, the instructions are all about those applications, which have absolutely nothing to do with cleaning your toilet) It's not a cheap cleaning technique, you need two big bottles of CLR and this plug (which is re-usable), but then again, you don't need to do it often. And it certainly is easier than some of the alternatives I've seen on line, one of which included taking the toilet apart, hauling it outside, turning it over, and scrubbing to get inside the lip/overhang at the top of the rim. The technique I have described will run about $50 and is well worth it. A cheaper alternative to CLR might be coca cola, which you can read about on the net. I've never tried it. CLR has three different acids in it, one specifically designed for mineral deposits. Coca cola has one acid in it, designed to destroy your teeth, which come to think of it are minerals. So the choice is yours. If the coke doesn't work try the CLR. Or not. There's a limit to how much aggro I want to devote to this operation. The key in both cases is to give the cleaning agent time to attack the debris. I can tell you CLR works impeccably. ## Frequently Bought Together - Cherne 270040 Rubber Test Ball Pipe Plug, 4" , Black - VIAIR 6 ft. Air Extension Hose for Portable Compressors, Black, P/N 00016 - Cherne 270032 Test-Ball 3-Inch Plug , Black --- ## 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.pl/products/310867961-cherne-270040-rubber-test-ball-pipe-plug-4-black](https://www.desertcart.pl/products/310867961-cherne-270040-rubber-test-ball-pipe-plug-4-black) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-07*