--- product_id: 253973183 title: "519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347" brand: "grundfos" price: "416.90 DT" currency: TND in_stock: true reviews_count: 5 category: "Grundfos" url: https://www.desertcart.tn/products/253973183-519601-cast-iron-flange-set-for-up-series-circulator-pumps store_origin: TN region: Tunisia --- # 3/4-inch NPT threaded pipe connection Includes 2 flanges, 2 gaskets, 4 bolts & nuts Durable cast iron build 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347 **Brand:** grundfos **Price:** 416.90 DT **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your pump game with the ultimate flange set—durability meets precision! ## Quick Answers - **What is this?** 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347 by grundfos - **How much does it cost?** 416.90 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/253973183-519601-cast-iron-flange-set-for-up-series-circulator-pumps) ## Best For - grundfos enthusiasts ## Why This Product - Trusted grundfos brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Threaded NPT Connection:** Secure 3/4-inch pipe fitting ensures reliable, vibration-resistant sealing - • **Trusted by Professionals:** Highly rated with 4.6 stars from 373 reviews, a go-to choice for expert pump maintenance - • **Complete Installation Kit:** Includes all essential components—flanges, gaskets, bolts, and nuts—for hassle-free setup - • **Engineered for Precision Fit:** Seamlessly pairs with Grundfos UP & UPS pumps for leak-proof performance - • **Robust Cast Iron Construction:** Built to last with industrial-grade durability that withstands demanding environments ## Overview The Grundfos 519601 Cast Iron Flange Set is a premium accessory designed for UP Series Circulator Pumps, featuring a durable cast iron construction, secure 3/4-inch NPT threaded connections, and a complete kit including flanges, gaskets, bolts, and nuts. Trusted by professionals for its perfect fit and leak-proof reliability, it ensures seamless pump integration and long-lasting performance. ## Description Grundfos 519601 Cast Iron Flange Set is compatible with Grundfos UP Series Circulator Pumps. This kit includes (2) flanges, (2) gaskets and (4) bolts and nuts. Features NPT end connections and a 3/4" fitting size. Constructed of durable cast iron material. Check manufacturer recommendations to ensure a proper fit. Review: Todo perfecto. - Todo bien con el producto, queremos compras mas artículos como este, en total de 102 artículos. Me pueden dar un mejor precio? Gracias Review: Perfect for their use case! - They do their job perfectly! The quality of the product is top of the line. I'm using it to pair it with my Grundfos water pump and it fit perfectly and hasn't leaked at all. You can tell this product is going to last. ## Features - Use with Versa Flo UP and UPS pumps - Pump connection GF 15/26 - 3/4-inch NPT pipe connection - Fitting is threaded for security - Includes 2 flanges, 2 gaskets, 2 bolts with nuts ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0012QGVRC | | Brand | Grundfos | | Color | Black | | Colour | Black | | Customer Reviews | 4.6 out of 5 stars 373 Reviews | | Fastener Type | bolts | | Fastener type | bolts | | Finish Types | Black | | Global Trade Identification Number | 00632514009769 | | Included Components | Grundfos 519601 Cast Iron Flange Set for UP Series Circulator Pumps - 3/4" NPT | | Item Diameter | 0.75 Inches | | Item Dimensions | 5.1 x 5.1 x 5.1 centimeters | | Item Shape | Round | | Item Type Name | Grundfos 519601 Cast Iron Flange Set for UP Series Circulator Pumps - 3/4" NPT | | Item Weight | 0.01 Ounces | | Item dimensions L x W x H | 5.1 x 5.1 x 5.1 centimeters | | Manufacturer | Grundfos | | Material | Cast Iron | | Material Type | Cast Iron | | Model | 519601 | | Number Of Items | 1 | | Number of Pieces | 6 | | Part Number | 519601 | | Screw Head Style | Hex | | Set Name | Flanges Set | | Size | 347 | | Size Name | 347 | | UPC | 783961374501 632514009769 | | Unit Count | 1 Count | ## Product Details - **Brand:** Grundfos - **Colour:** Black - **Item dimensions L x W x H:** 5.1 x 5.1 x 5.1 centimeters - **Material:** Cast Iron - **Size:** 347 ## Images ![519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347 - Image 1](https://m.media-amazon.com/images/I/612MCDF08AL.jpg) ## Questions & Answers **Q: What isthe size of the bolts in this set?** A: I believe they were 1/2" x 2" **Q: What are the dimensions of these flanges? Specifically how far apart are the bolt holes?, And how big is diameter on short side?** A: The bolt holes are 3 1/8” Center to Center. The diameter of the two bolt holes are approximately 1/2”. They are about 5/16” from the edge of the flange. I hope this helps you. Mike **Q: My boiler has 1" input/output. Is there a 1" flange set?** A: Yes, please see the following. Grundfos 519602 1-Inch GF 15/26 Cast Iron Flange Set … ASIN: B0012QIZNU **Q: grundfos ups 26-99fc will this set work on this pump?** A: 3/4" GF 15/16 FLANGE SET, BRONZE, THREADED, PAIR, GRUNDFOS, Use with UP15-18SF, UP15-42SF, UP25-64SF, UP26-96BF, UP26-99BF YES ## Customer Reviews ### ⭐⭐⭐⭐⭐ Todo perfecto. *by L***O on 21 August 2023* Todo bien con el producto, queremos compras mas artículos como este, en total de 102 artículos. Me pueden dar un mejor precio? Gracias ### ⭐⭐⭐⭐⭐ Perfect for their use case! *by L***E on 21 June 2017* They do their job perfectly! The quality of the product is top of the line. I'm using it to pair it with my Grundfos water pump and it fit perfectly and hasn't leaked at all. You can tell this product is going to last. ### ⭐⭐⭐⭐⭐ is what it says-quality is fine *by S***I on 1 June 2024* wrong size 4 me ## Frequently Bought Together - Grundfos 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, 347, Black - Grundfos 59896341 UPS15-58FC Super Brute Circulator, Red, Small - 3-Speed Grundfos Pump Hot Water Circulator Pump Model UPS15-58FC; 115V --- ## 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.tn/products/253973183-519601-cast-iron-flange-set-for-up-series-circulator-pumps](https://www.desertcart.tn/products/253973183-519601-cast-iron-flange-set-for-up-series-circulator-pumps) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-22*