---
product_id: 20957509
title: "Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack"
brand: "flow security systems"
price: "฿3"
currency: THB
in_stock: false
reviews_count: 10
url: https://www.desertcart.co.th/products/20957509-flow-security-systems-guard-n-lock-faucet-protector-magnetic-key
store_origin: TH
region: Thailand
---

# Promotes Conservation Keyed Alike Weather Resistant Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack

**Brand:** flow security systems
**Price:** ฿3
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Lock It Down: Your Water, Your Control!

## Quick Answers

- **What is this?** Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack by flow security systems
- **How much does it cost?** ฿3 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/20957509-flow-security-systems-guard-n-lock-faucet-protector-magnetic-key)

## Best For

- flow security systems enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Reliable:** Crafted from hardened zinc alloy for long-lasting protection.
- • **One Key Convenience:** Keyed alike for multiple locks, simplifying access.
- • **Effortless Installation:** Easily replace old bib handles with included tools.
- • **Secure Your Water Supply:** Prevent unauthorized use and theft with innovative design.
- • **Versatile Security Solution:** Ideal for homes, commercial spaces, and outdoor areas.

## Overview

The Flow Security Systems Guard’n’Lock FSS 550 is a cutting-edge faucet protector designed to prevent unauthorized water use and theft. With its patented free-spinning design, easy installation, and weather-resistant features, this lock is perfect for securing outdoor bibbs in residential and commercial settings alike. Keyed alike for convenience, it promotes water conservation while ensuring peace of mind.

## Description

Prevent Water Theft!The FSS 550 Guard'n'Lock has a unique patented free-spinning design in order to secure faucets and hose bibbs from miscellaneous vandalism, unauthorized use, tampering and water theft. The FSS 550 Guard'n'Lock is made of non-corrosive material and includes two keys (additional replacement keys are available). The FSS 550 Guard'n'Lock can be keyed alike so that multiple hose bibbs can be secured with the convenience of having only one key.KEY BENEFITS:Secures WaterlinesPromotes Water ConservationEasy to InstallFits 3/4 inch Hose Thread OutletsA Must Have for All Homeowners!Along with providing complete security and peace of mind at your house, vacation home, or apartment, The FSS 550 Guard'n'Lock installs on the stem of the hose bibb with minimal assembly. This is perfect for homeowners who would like the added convenience of leaving their hose attached, yet still maintaining the highest level of protection from water theft.NOT FOR USE ON FROST FREE HOSE BIBS

## Features

- PREVENT UNAUTHORIZED USE: Tired of wondering who’s using your water after hours? The FSS 550 is a revolutionary new way to secure your hose bibbs, silcocks and outdoor faucets or taps. This lock has a unique patented free-spinning design in order to secure faucets and hose bibbs from miscellaneous vandalism, unauthorized use, tampering and water theft.
- EASY ASSEMBLY: Securing hose bibs from vandalism and theft has never been easier. The Guard’n’Lock is extremely easy to use. Simply remove old bib handle with a screwdriver or wrench and replace with provided adapter, all tools provided(except screwdriver). NOT FOR USE ON FROST FREE HOSE BIBS.
- MULTI-PURPOSE USE: The Guard’n’Lock provides complete security at your house, vacation home, or apartment. The FFS 550 also works perfect for commercial and industrial buildings, ideal for schools, college campuses and shopping centers and can easily secure hospitals and apartments.
- KEYED THE SAME: The Guard’n’Lock is keyed alike so that multiple hose bibbs can be secured with the convenience of having only one key. Perfect for commercial and industrial buildings, farm lands, parks and recreational areas where there are numerous Guard’n’Locks being used over a large area. If you prefer a different key for each lock, that option is also available.
- WATER CONSERVATION: The Guard’n’Lock promotes water conservation by preventing water theft and unauthorized use. This lock will deter unauthorized use of outdoor water lines, great addition for all homeowners. Made from hardened zinc alloy this lock is built to last.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Flow Security Systems, Inc. |
| Special Feature | Weather Resistant |
| Lock Type | Key Lock |
| Item Dimensions LxWxH | 1.5 x 1.5 x 1.5 inches |
| Material | Zinc |
| Style | Keyed the Same |
| Number of Pieces | 1 |
| Controller Type | Hand Control |
| Manufacturer | Flow Security Systems, Inc. |
| Part Number | FSS-550-KTS |
| Item Weight | 8 ounces |
| Product Dimensions | 1.5 x 1.5 x 1.5 inches |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Special Features | Weather Resistant |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack - Image 1](https://m.media-amazon.com/images/I/31+LW3drvhL.jpg)
![Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack - Image 2](https://m.media-amazon.com/images/I/417Z-Yui74L.jpg)
![Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack - Image 3](https://m.media-amazon.com/images/I/71Mge2H7WCL.jpg)
![Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack - Image 4](https://m.media-amazon.com/images/I/710vOPnINkL.jpg)
![Flow Security Systems | Guard’n’Lock | Faucet Protector | Magnetic Key | Keyed The Same | Prevents Water Theft & Secures Outdoor Bibbs | Promotes Water Conservation | FSS 550 | 1 Pack - Image 5](https://m.media-amazon.com/images/I/717KA-gqzPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works as advertised, and the owner was a big help in solving an issue.
  

*by J***N on Reviewed in the United States on April 11, 2016*

Bought three of these to keep my father from over-watering. He has Alzheimer's and it was killing the plants and our water bill. The first two I installed easily (save for corrosion on the nut from decades of weathering) and worked great with no issues. The third however didn't work. I ran into an issue where it seemed like with or without the key it was able to turn the stem. After sending an email to Flow Security Systems I received a call on the next business day to help troubleshoot it. Mark was able to guide me to an issue with the nut on the stem - it had iron in it. To test this all you have to do is touch the back of the key to the nut. If it sticks you know you have an issue. I found a brass nut and replaced it on the stem, reinstalling the Guard'n'Lock. Worked great.

### ⭐ 1.0 out of 5 stars







  
  
    Didn't work
  

*by S***Y on Reviewed in the United States on July 21, 2020*

I purchased this lock about 4 years ago when neighborhood landscapers used our home's spigot to water the community's lawns.  The situation improved and I never installed the lock.  Recently we discovered the new landscapers are doing the same thing so I dug out the lock and put it on.  The process was quick and easy! However, once the lock was installed, it spun on the stem with or without the key.  I couldn't get any water out and I couldn't get the lock off!  Thankfully with the combination of prayer and wedging my wrench onto the slightly exposed outer rim of the adapter, I was able to get the lock off, slicing my fingers on the threads a bit in the process.  I reviewed all the instructions and several online videos and I believe I followed the installation steps correctly.  I'm afraid to try again since I don't believe it will come off a second time.  I'm quite disappointed since this would have been the perfect solution to protect our water usage while still allowing the hose to be connected.  Plus, after 4 years I doubt a refund or return is possible.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Don't pay attention to the instructions
  

*by K***N on Reviewed in the United States on December 27, 2013*

Like others, I got this because someone was stealing my water.  My neighbor caught some guy pulling up to the front of my house, and using my hose and water to fill up a big RV. I searched for different options, and this seemed the most promising.However, ignore the written instructions to install it.  Instead, go to the Company's web site and watch about a 2 minute video showing how to install it. At least for me, it was much easier to install after seeing it demonstrated.  The video made it seem so easy.  I should have known, it would not be that easy for me.The video shows the original water handle being lifted off after the top screw has been removed.  Well, my water handle would not come off. Neither the written instructions, nor the Company's web site tells you what to do in that situation.  It turned out corrosion inside the handle where it attached to the water faucet was keeping me from removing the handle.  After searching around the Internet, I found out what to do:Spray inside the handle where the screw was removed with WD40.  After a couple of minutes, take a hammer and gently tap on first one side of the handle, then the other.  Then, use a screwdriver leveraged under the handle to pry it off.  If it is still not coming off, squirt some more WD40, and tap each side a few times, and repeat. Doing this twice worked for me.After I got the faucet handle off, it installed just as the video showed.  It has worked just fine since then, and you cannot turn the water on without inserting the key.Finally, although the photo shows it in blue, the one I received was green. I like the green one better because it blends in with the green hose  wound up next to the faucet.  However, if you have your heart set on blue, you might not receive that color as the Company apparently substitutes green for blue without notice.

---

## 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.co.th/products/20957509-flow-security-systems-guard-n-lock-faucet-protector-magnetic-key](https://www.desertcart.co.th/products/20957509-flow-security-systems-guard-n-lock-faucet-protector-magnetic-key)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-21*