---
product_id: 5784606
title: "519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347"
brand: "grundfos"
price: "€ 37.59"
currency: EUR
in_stock: true
reviews_count: 13
category: "Grundfos"
url: https://www.desertcart.sk/products/5784606-519601-cast-iron-flange-set-for-up-series-circulator-pumps
store_origin: SK
region: Slovakia
---

# Complete Set: 2 Flanges, Gaskets & Bolts 3/4" NPT Threaded Connection Durable Cast Iron Construction 519601 Cast Iron Flange Set for UP Series Circulator Pumps-3/4 NPT, Black, 347

**Brand:** grundfos
**Price:** € 37.59
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your pump game with cast iron confidence!

## 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?** € 37.59 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/5784606-519601-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

- • **Compact & Efficient:** Streamlined 2x2 inch dimensions optimize space without compromising strength.
- • **Precision Threaded Fit:** Secure 3/4" NPT pipe connection ensures leak-proof pump integration.
- • **Robust Cast Iron Build:** Engineered for longevity and heavy-duty performance in demanding pump systems.
- • **Versatile Compatibility:** Specifically designed for Grundfos UP and UPS Series circulator pumps.
- • **All-in-One Installation Kit:** Includes 2 flanges, 2 gaskets, and 4 bolts with nuts for hassle-free setup.

## Overview

The Grundfos 519601 Cast Iron Flange Set is a premium, durable accessory designed for seamless integration with UP Series circulator pumps. Featuring a secure 3/4" NPT threaded connection and a complete kit of flanges, gaskets, and bolts, it guarantees reliable, long-lasting pump performance for professional-grade plumbing setups.

## Description

Product 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. From the Manufacturer Grundfos cast iron flange sets include: 2 each - flanges, gaskets, bolts with nuts. Use with Versa Flo UP and UPS pumps.

Review: is what it says-quality is fine - wrong size 4 me
Review: correct part and fit perfect - great quality. would purchase again

## 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 |
| Best Sellers Rank | #404,075 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #680 in Water Pump Accessories |
| Brand | Grundfos |
| Color | Black |
| Compatible Groove Diameter | 15 Millimeters |
| Customer Reviews | 4.7 out of 5 stars 380 Reviews |
| Fastener Type | bolts |
| Finish Types | No Finish |
| 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 | 2 x 2 x 2 inches |
| 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 | 2 x 2 x 2 inches |
| Manufacturer | Grundfos |
| Material | Cast Iron |
| Material Type | Cast Iron |
| Model | 519601 |
| Number Of Items | 1 |
| Number of Pieces | 6 |
| Outside Diameter | 0.75 Inches |
| Part Number | 519601 |
| Screw Head Style | Hex |
| Set Name | Grundfos UP Series Circulator Pumps Flange Set |
| Size | 347 |
| Size Name | 347 |
| Thread Size | 3/4-18 |
| UPC | 783961374501 632514009769 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Grundfos
- **Color:** Black
- **Item dimensions L x W x H:** 2 x 2 x 2 inches
- **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

### ⭐⭐⭐⭐⭐ is what it says-quality is fine
*by S***I on June 1, 2024*

wrong size 4 me

### ⭐⭐⭐⭐⭐ correct part and fit perfect
*by S***M on December 27, 2023*

great quality. would purchase again

### ⭐⭐⭐⭐⭐ it just works
*by S***H on February 1, 2021*

This is a plain jane item that just works and will last a lifetime.

## 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

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-06-23*