---
product_id: 250012105
title: "GRUNDFOS 519603"
brand: "grundfos"
price: "$162"
currency: NZD
in_stock: true
reviews_count: 5
category: "Grundfos"
url: https://www.desertcart.nz/products/250012105-grundfos-519603
store_origin: NZ
region: New Zealand
---

# 1-1/4" NPT end connections Compatible with Grundfos UP Series Complete kit: 2 flanges, 2 gaskets, 4 bolts & nuts GRUNDFOS 519603

**Brand:** grundfos
**Price:** $162
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your pump game with precision and ease!

## Quick Answers

- **What is this?** GRUNDFOS 519603 by grundfos
- **How much does it cost?** $162 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/250012105-grundfos-519603)

## 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

- • **Lightweight Yet Robust:** At just 553g, this flange kit balances strength with easy handling for efficient plumbing projects.
- • **Trusted Grundfos Quality:** Manufactured by Grundfos Pumps Corp., guaranteeing durability and reliability in every component.
- • **All-in-One Installation Kit:** Includes flanges, gaskets, bolts, and nuts—everything you need to upgrade without the hassle.
- • **Optimized for Professional Use:** Designed to meet manufacturer recommendations, ensuring a perfect fit and long-lasting operation.
- • **Precision Fit for Peak Performance:** Engineered 1-1/4" NPT connections ensure seamless integration with your Grundfos UP Series circulator pumps.

## Overview

The GRUNDFOS 519603 flange kit features 1-1/4" NPT end connections compatible with Grundfos UP Series circulator pumps. This comprehensive kit includes 2 flanges, 2 gaskets, and 4 bolts and nuts, designed for a perfect fit and reliable performance. Lightweight at 553g, it’s engineered for professional-grade plumbing installations, backed by Grundfos’ trusted manufacturing standards.

## Description

519603, Grundfos Pumps Corp., Flange 1-1/4"

Review: Make sure it's all you need!
Review: Good value

## Features

- Fitting Size: 1-1/4" NPT
- NPT end connections
- Compatible with Grundfos UP Series Circulator Pumps
- Kit includes (2) flanges, (2) gaskets and (4) bolts and nuts
- Check manufacturer recommendations to ensure a proper fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0039PO22K |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 4.8 4.8 out of 5 stars (23) |
| Date First Available | 21 Mar. 2013 |
| Item Package Quantity | 1 |
| Item Weight | 553 g |
| Item model number | 519603 |
| Manufacturer | Grundfos Pumps Corp. |
| Material | Other |
| Part Number | 519603 |
| Product Dimensions | 20.32 x 10.16 x 15.24 cm; 553.38 g |
| Size | 379 |

## Images

![GRUNDFOS 519603 - Image 1](https://m.media-amazon.com/images/I/61luHiue4dL.jpg)

## Questions & Answers

**Q: What is the distance between the bolt holes ? Thanks**
A: Center to center is 3-1/4" for the Grundfos flanges.

**Q: What is the total lenght of the flange ? Thanks**
A: Total length of the Grundfos flange is 4-1/4". The holes center to center is 3-1/4".

## Customer Reviews

### ⭐⭐⭐⭐⭐ Make sure it's all you need!
*by K***C on 26 February 2026*



### ⭐⭐⭐⭐⭐ Good value
*by J***A on 20 October 2024*



### ⭐⭐⭐⭐⭐ Worked fine
*by H***Y on 29 May 2024*



## Frequently Bought Together

- Grundfos 519603 Cast Iron Flange Set for UP Series Circulator Pumps-1-1/4 NPT, Black
- Grundfos 59896341 UPS15-58FC Super Brute Circulator, Red, Small
- HYDRO MASTER Universal Pump Flange Gasket (Set of 2)

---

## 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.nz/products/250012105-grundfos-519603](https://www.desertcart.nz/products/250012105-grundfos-519603)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-14*