--- product_id: 330372996 title: "U4551H 3/4 HD SOC FLG PVC 80" brand: "nibco" price: "€ 74.73" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.it/products/330372996-u4551h-3-4-hd-soc-flg-pvc-80 store_origin: IT region: Italy --- # U4551H 3/4 HD SOC FLG PVC 80 **Brand:** nibco **Price:** € 74.73 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** U4551H 3/4 HD SOC FLG PVC 80 by nibco - **How much does it cost?** € 74.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/330372996-u4551h-3-4-hd-soc-flg-pvc-80) ## Best For - nibco enthusiasts ## Why This Product - Trusted nibco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description The NIBCO 4551-H schedule 80 flange pipe fitting is made of PVC and has socket connections. This flange fitting joins two pipes or valves in a piping system or attaches a pipe to a flat surface or flange. It has female socket openings for sliding over the ends of male pipes. The socket end connects to pipes with a smooth bore for enhanced flow. This schedule 80 (thick wall) fitting is made of (Chemtrol) PVC for corrosion resistance, high strength, and less weight than fittings made from metal. It is compatible with schedule 80 PVC pipes and fittings, and is suitable for chemical processing, industrial plating, chilled water distribution, deionized water lines, and chemical drainage and wastewater treatment systems. PVC can be connected to other materials such as steel, copper, or cast iron using transition fittings. This fitting provides superior flow to metal because of its smooth interior finish, which reduces friction and inhibits buildup of materials. This fitting meets American Society for Testing and Materials (ASTM) D1784 Class 12454-B specifications for quality assurance.Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size, and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).NIBCO manufactures flow-control products for construction, industrial, fire protection, and irrigation applications. The company, founded in 1904, is headquartered in Elkhart, IN, and meets International Organization for Standardization (ISO) 9001 standards for quality assurance. ## Features - Flange for joining two pipes or connecting valves in a piping system - Socket ends for connecting to male pipes or fittings - PVC for corrosion resistance, high strength, and less weight than fittings made from metal - Smooth interior finish for reduced friction and material buildup - Meets specifications ASTM D1784 Class 12454-B for quality assurance ## Images ![U4551H 3/4 HD SOC FLG PVC 80 - Image 1](https://m.media-amazon.com/images/I/61ob3rdd5sL.jpg) ## Available Options This product comes in different **Size, Number of Items** options. ## Questions & Answers **Q: Would this mount to soffit with wood screws?** A: It would if you drill new holes between the existing holes. The existing holes are too large and the heads of the wood screws will not grab them unless you use washers. **Q: is the stated 1 ½” size for the od or id of the pvc pipe?** A: A standard pvc pipe fits inside so it would be id of 1 1/2. **Q: Schedule 40 1.5" pvc pipe is 1.92" od. how is that going to fit inside this flange?** A: Thank you for your inquiry on the NIBCO 4551-H Series PVC Pipe Fitting, Flange, Schedule 80, 1-1/2" Socket. If the 4551-H is 1 ½” size, Schedule 40 1 ½” pipe will fit inside the hub connection of the flange. The schedule number changes the dimension of sidewall thickness, while the OD remains the same. If you have additional questions, you can reach a NIBCO Technical Services Advisor, M-F 8am - 6pm EST, by phone at (888) 446-4226. **Q: Nibco 4551-h series pvc pipe fitting, flange, schedule 80, 3/4" socket . 3/4 " pvc pipe will fit in the hole, right?** A: Thank you for your inquiry on the NIBCO 4551-H Series PVC Pipe Fitting, Flange, Schedule 80, 3/4" Socket. Yes, 3/4" PVC pipe will fit this material. If you have additional questions, you can reach a NIBCO Technical Services Advisor, M-F 8am - 6pm EST, by phone at (888) 446-4226. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A lot of home projects for this flange *by S***N on Reviewed in the United States on 16 February 2019* I bought this for a home made Fender amplifier riser. The other one went to an led arm I added to a 3 row shelf. The last one is for a stand alone humiditstat in the bedroom. Built for life. Heavy duty. Into plumbing? This is it. All you need is RTV and bolts and 24 hours. * ### ⭐⭐⭐ Solid piece *by W***K on Reviewed in the United States on 10 October 2013* I use a lot of galvanized flanges, but couldn't find a plastic/pvc locally. Product not what I expected, but does what I needed them to do. The mounting holes on the galvanized are tapered and designed to take screws These have smooth bolt holes. ### ⭐⭐⭐⭐ but that didn't effect the final results that were good. At least for what I did *by F***T on Reviewed in the United States on 17 January 2016* so the base as another review has stated, is not flat. but that didn't effect the final results that were good. At least for what I did. Im happy! --- ## 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.it/products/330372996-u4551h-3-4-hd-soc-flg-pvc-80](https://www.desertcart.it/products/330372996-u4551h-3-4-hd-soc-flg-pvc-80) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-12*