--- product_id: 253973183 title: "Grundfos 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347" brand: "grundfos" price: "11463 kr" currency: ISK in_stock: true reviews_count: 5 url: https://www.desertcart.is/products/253973183-grundfos-519601-cast-iron-flange-set-for-up-series-circulator store_origin: IS region: Iceland --- # 3/4-inch NPT threaded pipe connection Includes 2 flanges, 2 gaskets, 4 bolts & nuts Durable cast iron build Grundfos 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347 **Brand:** grundfos **Price:** 11463 kr **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your pump game with the ultimate flange set—durability meets precision! ## Quick Answers - **What is this?** Grundfos 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347 by grundfos - **How much does it cost?** 11463 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/253973183-grundfos-519601-cast-iron-flange-set-for-up-series-circulator) ## 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. ## 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 | | Date First Available | 24 January 2013 | | Is Discontinued By Manufacturer | No | | Item Model Number | 519601 | | Manufacturer | Grundfos | | Product Dimensions | 5.08 x 5.08 x 5.08 cm; 0.28 g | ## 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 ![Grundfos 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 on Reviewed in Mexico 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 on Reviewed in Canada 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. ### ⭐⭐⭐⭐⭐ Worked great. *by on Reviewed in the United States 22 October 2026* Exactly what I needed. ## 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.is/products/253973183-grundfos-519601-cast-iron-flange-set-for-up-series-circulator](https://www.desertcart.is/products/253973183-grundfos-519601-cast-iron-flange-set-for-up-series-circulator) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-11-09*