---
product_id: 9164023
title: "Danco HFX120 Anti-Siphon Toilet Tank Repair Kit"
brand: "danco"
price: "€ 55.59"
currency: EUR
in_stock: true
reviews_count: 3
url: https://www.desertcart.hr/products/9164023-danco-hfx120-anti-siphon-toilet-tank-repair-kit
store_origin: HR
region: Croatia
---

# WaterSense certified for eco-efficiency Tool-free installation in minutes Powerful jets clean tank & flapper Danco HFX120 Anti-Siphon Toilet Tank Repair Kit

**Brand:** danco
**Price:** € 55.59
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your throne with smart, sustainable flush power!

## Quick Answers

- **What is this?** Danco HFX120 Anti-Siphon Toilet Tank Repair Kit by danco
- **How much does it cost?** € 55.59 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/9164023-danco-hfx120-anti-siphon-toilet-tank-repair-kit)

## Best For

- danco enthusiasts

## Why This Product

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

## Key Features

- • **DIY Friendly:** Durable plastic build installs easily—no plumber needed
- • **Harsh Water Ready:** Flapper engineered to withstand tough water conditions without fail
- • **Leak Alert System:** Automatic leak detection keeps your toilet sustainable and efficient
- • **Precision Water Saving:** Pinpoint calibration reduces water waste and cuts your bills
- • **Universal Compatibility:** Fits Kohler, American Standard & Briggs for seamless upgrades

## Overview

The Danco HFX120 Anti-Siphon Toilet Tank Repair Kit is a WaterSense certified, tool-free install solution designed to eliminate leaks and miscalibration in toilets. Featuring powerful cleaning jets and a flapper built for harsh water, it fits major brands like Kohler and American Standard, ensuring long-lasting performance and water savings.

## Description

Product Description               The Danco toilet repair kit solves the two biggest sources of water loss in toilets-miscalibration and leaks. The mini-valve allows pinpoint calibration which saves water. The automatic leak detection feature continuously monitors toilet sustainability and signals when a leak occurs. It also cleans the tank and flapper with powerful jets that prolong the life of all internal components and eliminate the need for harsh, toxic chemicals that are a source of contamination in and around your home.                  From the Manufacturer               Next by Danco exemplifies a line of state-of-the-art plumbing repair parts that empowers the DIYer and Professional to do more than just solve the problem. Don’t just repair it. Improve it.

## Features

- Cleans the tank and flapper with powerful jets
- Flapper designed for harsh water conditions
- Designed to be compatible with Kohler, American Standard and Briggs
- Durable plastic construction
- Installs easily without tools

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Plastic |
| Brand | Danco |
| Item dimensions L x W x H | 10 x 10 x 10 inches |
| Exterior Finish | Plastic (No Specific Finish) |
| Inlet Connection Size | 2.5 Inches |
| Inlet Connection Type | Female Iron Pipe |
| Outlet Connection Type | Air Admittance Valve/Vacuum Breaker |
| Outlet Connection Size | 2.5 Inches |
| Specification Met | WaterSense certified |
| Global Trade Identification Number | 00188670000039 |
| Manufacturer | Next by Danco |
| UPC | 188670000039 |
| Part Number | HFX120 |
| Item Weight | 15.8 ounces |
| Product Dimensions | 10 x 10 x 10 inches |
| Item model number | HFX120 |
| Is Discontinued By Manufacturer | No |
| Size | No Size |
| Color | No Color |
| Item Package Quantity | 1 |
| Included Components | Next by Danco HFX120 HydroFix Water Saving Toilet Fill Valve and Flapper Kit |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Warranty |

## Product Details

- **Material:** Plastic
- **Brand:** Danco
- **Item dimensions L x W x H:** 10 x 10 x 10 inches
- **Exterior Finish:** Plastic (No Specific Finish)
- **Inlet Connection Size:** 2.5 Inches
- **Inlet Connection Type:** Female Iron Pipe
- **Outlet Connection Type:** Air Admittance Valve/Vacuum Breaker
- **Outlet Connection Size:** 2.5 Inches
- **Specification Met:** WaterSense certified
- **Global Trade Identification Number:** 00188670000039

## Images

![Danco HFX120 Anti-Siphon Toilet Tank Repair Kit - Image 1](https://m.media-amazon.com/images/I/61hfAvlLXML.jpg)
![Danco HFX120 Anti-Siphon Toilet Tank Repair Kit - Image 2](https://m.media-amazon.com/images/I/71KWp8dcC+L.jpg)
![Danco HFX120 Anti-Siphon Toilet Tank Repair Kit - Image 3](https://m.media-amazon.com/images/I/71AwgGPGHrL.jpg)
![Danco HFX120 Anti-Siphon Toilet Tank Repair Kit - Image 4](https://m.media-amazon.com/images/I/81n6uDXcGSL.jpg)
![Danco HFX120 Anti-Siphon Toilet Tank Repair Kit - Image 5](https://m.media-amazon.com/images/I/61hj3M0QyeL.jpg)

## Questions & Answers

**Q: Any one ever try one of these on a Toto?**
A: No

**Q: How do I get warranty coverage for this? Mine is having problems with stopping the water flow when the float valve is up.**
A: contact the company ---- don't expect a lot of help from them but they did send a replacement  - I had same problem (water wouldn't shut off) and another problem I had to call plumber on - he put in a decent product - I have an extra one of these in the garage now (oh the company didn't replace the flapper that was faulty) getting old but I am not going to go through the hassle I did for this one again - oh mine never worked and the flapper never held water - good idea for a product - bad product

**Q: does it fit one piece toto 1.6G toilet? If not, any recommendation?**
A: Hello, and thank you for contacting Danco! The Next by Danco model # HFX120 is designed for compatibility with Kohler, American Standard, and Briggs standard two piece toilets, and will not be compatible with your current toilet configuration. We suggest reaching out to Toto for their suggestion on replacement flappers and fill valves.

**Q: What size flapper is included with this kit? Is it a 2" or 3" flapper?**
A: Mine did not include one

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement
*by J***G on December 14, 2011*

I needed a new float valve for my toilet since my old wouldn't shut off completely, so it would just trickle water down the overflow. I chose this one because it was cheap and offered so much.It fills the tank with great flow, which helps the flushing pressure, and the added jets keep stuff from settling at the bottom. The float is very simple to adjust with a couple quick turns. And, the best part, the rate of flow from the fill tube can be adjusted, from full blast to completely off; I set mine to a light flow and it fills the bowl perfectly without wasting water like other valves (and thus saving me cash).I got the whole thing installed in about 5 minutes with only a crescent wrench to remove the old valve; everything on this thing can be hand adjusted. Now, my toilet flushes with gusto, the leak is fixed and everything looks great. If you need a replacement float valve for your toilet, look no further! I'm considering getting one for my other toilet now since it should pay for itself over time with the water savings.

### ⭐⭐⭐⭐⭐ Easy to Use and Highly Adjustable for Maximum Water Savings
*by D***S on October 29, 2009*

For a few dollllars more than your standard tank repair kit, I purchased this one. It promised a few key benefits, and delivered on them.Some of the features advertised on this kit are standard with a normal kit:1. Setting the amount of water that fills the tank - this is done the same way as a normal kit, by adjusting the height of the float with a screw - easy as cake.2. Water savings on a flush - this is a bit debateable since any new fill valve will save water over what's wasted by a broken one.3. Flapper - the flapper in this kit is nothing special. Feels kind of flimsy actually, but it gets the job done.Some of the unique features offered by this kit:1. Calibrating the amount of water that goes into the bowl through the fill tube - This is the best reason to buy this kit. With a simple lever you can adjust the fill amount to a reasonable level. My toilet was from 1984, and wasted a lot of water by overfilling the bowl every time. The amount of water I save with just this adjustment will pay for the kit in no time.2. Tank Cleaner - A neat little feature, it basically sprays water around the tank to clear out any debris and help prevent anything from growing there. I had a lot of small pebbles in the tank that had accumulated over the years, and within 3-4 flushes it had pushed all of them into a nice little cluster next to the flapper, and they all were flushed away quickly.3. Fill lock - This isn't fancy but it gets the job done. it's a small piece of plastic that allows you to lock the pump in the "off/raised" setting and prevent the tank from refilling while you are adjusting the flapper, changing the pump height, or whatever else you need to do.4. Easy installation - No tools required and took me about 10 minutes to install, and I was pretty careful. Totally painless.I haven't had a chance to use the leak detection feature yet (and hopefully won't ever have to).Overall I think this kit is great, offering a lot of extras you won't find on a normal repair kit. The high level of adjustability will likely offset the higher cost of this kit in the long run. Highly recommended.

### ⭐⭐⭐ Not compatible with all toilets
*by D***E on January 30, 2010*

This is a thoughtfully designed product, but it is not compatible with every toilet, as the advertising suggests.The model HFX120 features a cleaning tube intended to rest on the bottom of the tank. It attaches to a plastic nipple at the base of the fill valve assembly. My TOTO toilet is designed to provide a relatively low tank profile. To accommodate the height of a standard fill valve, there is a ~2.5-inch diameter recess at the bottom of the tank in which the fill valve assembly seats. This recess is not large enought to accommodate the HFX120 cleaning tube. Thus, to use the product, I had to cut the plastic nipple off of the assembly and forego the use of the tube. It appears that the MJSI model 550 fill valve, which is essentially the same product as the fill valve in the HFX120 kit without the cleaning tube, would be appropriate for the TOTO toilet.Apart from this issue, the installation instructions are good; the installation was straightforward; and the product performs its function.

## Frequently Bought Together

- Danco HFX120 Anti-Siphon Toilet Tank Repair Kit
- Fluidmaster 502P21 PerforMAX Universal Water-Saving Long Life Toilet Flapper for 2-Inch Flush Valves, Adjustable Solid Frame Design, Easy Install, Red, 1 pack

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-06*