Best Sillcock Key (Water Key) and Everything You Must Know

Sillcock keys or water keys are revolutionary tools. In this article, I will cover everything about sillcock keys including the best sillcock key.

Sillcock keys are tools that are commonly used by contractors and engineers alike. However, sillcock keys are also commonly used by urban preppers.

The sillcock key will make accessing a clean water supply so much simpler and make roaming the streets much safer.

In this article, you will learn why you need them, what are sillcock keys used for and how to use them, how to make them, and which is the best sillcock key to buy?

Let’s jump right in.

why you need a sillcock key

Why do you need one? This will help you if you need an emergency water supply, and you don’t own a $500 well, which you can actually learn how to make here.

Things like water supply terrorism lurk in this world – where enemies poison the main water supply or cut it off to leave the people to die. There can also be natural disasters and even bombings that could cut off the water supply.

So, where does sillcock water come from – it usually isn’t from the main water supply, and if it is on rare occasions, you should be filling your water through a water filter bottle that will purify the water through the straw as you drink.

Water may also be very inaccessible and hard to find, so all you need is a sillcock key to unlock that water! To add on, even when the pipes are blocked for the entire city, you can still force every drop out of it (thousands of gallons) because of hydrostatic pressure.

On top of that, this is the perfect self-defense weapon, as you can hold on to one end and jam it into your opponent to cause massive lethal damage. The sillcock key is the ideal urban prepper tool for quick access to locked water.

Sillcock Key Use

Sillcock keys can be used for different things by many different people. The sillcock key will help you with hygiene, access to water, decontaminating water, and even refilling a vehicle’s radiator.

There is restricted water everywhere around us, and with this tiny tool, you’ll be able to access all of that. They are on the side of large buildings, malls, and even rest stops!

This cheap tiny piece of metal is revolutionary. I first witnessed this when I saw a man enable an outdoor spigot to clean a sick kid. That made me very curious about the sillcock key.

This can be used as an emergency water supply, a quick water refill solution. This even works when the water pipes are cut, or the water supply is cut for your city. You can still use it because the hydrostatic pressure will force every drop of water out.

When anyone’s talking about sillcock keys, it’s hard to know exactly what they’re talking about because there are so many different kinds. So, how do you use this thing?

How to Use Sillcock Keys?

Sillcock keys can have anything from 1 all the way to 11 separate keys in a sillcock key. Commercial and industrial buildings have different sillcock valves, which can only be unlocked by certain sillcock keys. A sillcock key will make accessing a clean water supply easy.

There are four widespread types of faucets and valves, so you really only need a lightweight 4-way key to unlock that freshwater; however, if you want to be very safe, you can carry a medium-weight 11 key sillcock key.

To use these keys, find a sillcock valve on the side of a building, try the most common keys first, then if that doesn’t work, move on to another nearby building, or if you have the 11 key sillcock key, you can keep trying. 

Once you find the key that works, but that all in the way in and turn to the left to make the water flowing, twist it back to stop the water flow. 

Remember that some buildings hide their sillcock valves, so it probably will be behind a tiny metal door about the regular paper size. That’s actually not a problem because those are either hand-cranked open or can be unlocked by a sillcock key! So why do you need these?

Best Sillcock Key

There is a wide range of sillcock keys; you might want to get the cheapest lightest, best sillcock key that will get the job finished most of the time, or you might want something of more quality that will flawlessly get the job done every time.

No matter your preferences, these two are the best out there at affordable prices.

Cheap and Light Sillcock Key

If you want a usable sillcock key that is lightweight and cheap, this is what you want. However, lightweight means fewer keys, and if you think you will get in a time crunch, this isn’t for you.

So, what is this cheap light key? The Cobra 4-way sillcock key (on Amazon) blows away all the other competitors in weight, pricing, rating, and popularity.




1.5 x 3.88 x 4.81 inch


Solid steel

  • Light for easy carry
  • Amazon's Choice 5-star rating
  • Comparatively cheap
  • Designed to fit the most common sillcock faucets
  • Made from durable steel construction
  • Compact design
  • Reliable design
  • Rust resistant
  • Trusted brand and company

  • Doesn't fit all the common sillcock faucets
  • Only silver color
  • No easy-to-use sillcock handles

Quality and Will Get the Job Done

If you don’t care about weight because you’ll just put it in your bag and probably won’t notice the slight increase in weight, and you want to open every faucet, electrical power, and more, this is the tool you want – I would consider this the best sillcock key.

This will almost guarantee that whatever faucet you want to extract water from will unlock for you. The CAIDU Multifunctional Marine Tools Key (on Amazon) works as a universal key to open a wide range of things, including all the water faucets. 

This is only slightly heavier than the feather-like key discussed above. Along with that, this will provide you the best experience if you have to use this a lot. This is designed with top-notch quality and material that will never fail you.




1.75 x 3 x 4.5 inch


Stainless steel

  • Light-medium weight for easy carry
  • Amazon's Choice
  • Comparatively cheap
  • Designed to fit all sillcock valves and more
  • Made from durable steel
  • Compact design
  • Reliable design
  • Rust resistant
  • Trusted brand and company
  • Relatively small

  • Only silver color
  • No easy-to-use handle

Last Words

In this article, you learned how sillcock keys can help you with survival and an emergency situation, along with which ones are the best.

I hope that you learned what a sillcock key is and chose a sillcock key of your own. This will come in handy to you at least once in your lifetime, and it’s always nice to have an extra self-defense tool with you.

I personally use this as an everyday carry; others use these tools to get a home bag or bugout bag. If you live in the cities, this is a great tool to have, and if you’re one of the people that doesn’t have this, you should get it.

If you liked this article, you’d like the LifeStraw Go water bottle review!

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4 thoughts on “Best Sillcock Key (Water Key) and Everything You Must Know”

  1. No mention of the danger of using a Silcock key in public. These keys are freely available at low cost but when people see you using one they may well try to take it from you for themselves. For more water supplies check out the back of big stores where they wash vehicles.

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