---
product_id: 24038496
title: "4300-51 Rx11 Flush Gun"
brand: "nu-calgon"
price: "€ 74.10"
currency: EUR
in_stock: true
reviews_count: 4
category: "Nu Calgon"
url: https://www.desertcart.hr/products/24038496-4300-51-rx11-flush-gun
store_origin: HR
region: Croatia
---

# Easy trigger mechanism for efficient flushing Precision injection control Versatile rubber flush tip (1/4" to 1-1/8") 4300-51 Rx11 Flush Gun

**Brand:** nu-calgon
**Price:** € 74.10
**Availability:** ✅ In Stock

## Summary

> 🚀 Flush smarter, not harder with Rx11 precision!

## Quick Answers

- **What is this?** 4300-51 Rx11 Flush Gun by nu-calgon
- **How much does it cost?** € 74.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/24038496-4300-51-rx11-flush-gun)

## Best For

- nu-calgon enthusiasts

## Why This Product

- Trusted nu-calgon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Operation:** Trigger mechanism designed for smooth, practical flushing without hassle.
- • **Universal Fit Flush Tip:** Rubber tip adapts seamlessly to line sizes from 1/4" up to 1-1/8"—no job too small or large.
- • **Precision at Your Fingertips:** Control the flush exactly where you need it for maximum efficiency.
- • **Technician-Approved Practicality:** Streamline your workflow with a tool built for real-world HVAC challenges.
- • **Single Unit, Infinite Possibilities:** Sold individually to fit your specific project needs—no excess, no waste.

## Overview

The Nu-Calgon 4300-51 Rx11 Flush Gun is a trigger-activated tool that attaches to standard charging hoses, offering precise control at the injection point. Its versatile rubber flush tip accommodates line sizes from 1/4 inch to 1-1/8 inches, making it an essential, practical tool for HVAC technicians seeking efficient and reliable flushing performance.

## Description

The Rx11-flush gun is a trigger mechanism that attaches to a standard charging hose when applying Rx11-flush.

Review: Good for clearing refrigerant lines with nitrogen - Works well for blowing out refrigeration lines
Review: Five Stars - Worked very well.

## Features

- Control at the injection point makes flushing easy and more practical for the technician
- Rubber flush tip makes it versatile in flushing lines as small as1/4 inch and up to 1-1/8 inches
- Sold in each

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005955G7S |
| Best Sellers Rank | #254,820 in Automotive ( See Top 100 in Automotive ) #456 in MIG Welding Equipment |
| Brand Name | Nu-Calgon |
| Customer Reviews | 4.6 4.6 out of 5 stars (41) |
| Included Components | Flush Gun |
| Inlet Connection Type | Barb |
| Item Type Name | Flush Gun |
| Manufacturer | Nu-Calgon Wholesaler, Inc. |
| Material Type | Rubber |
| Model Number | 4300-51 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Size | 3-1/2 in x 9-3/5 in |
| Thread Size | 3-1/2 in |
| Thread Type | Barb |
| UPC | 681001430081 |
| Unit Count | 1.0 Count |
| Valve Type | Flush Gun |

## Product Details

- **Brand:** Nu-Calgon
- **Inlet Connection Type:** Barb
- **Manufacturer:** Nu-Calgon Wholesaler, Inc.
- **Material:** Rubber
- **Number of Ports:** 1
- **UPC:** 681001430081

## Images

![4300-51 Rx11 Flush Gun - Image 1](https://m.media-amazon.com/images/I/51GhiHS+pgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good for clearing refrigerant lines with nitrogen
*by D***S on August 4, 2025*

Works well for blowing out refrigeration lines

### ⭐⭐⭐⭐⭐ Five Stars
*by D***1 on July 14, 2016*

Worked very well.

### ⭐ Trigger dosnt open enough to let pressure thru
*by M***R on June 3, 2025*

Garbage

---

## 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.hr/products/24038496-4300-51-rx11-flush-gun](https://www.desertcart.hr/products/24038496-4300-51-rx11-flush-gun)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-04-25*