A double-acting lever lock consist of a bolt, and a set of levers with a slot. When you turn the key in the lock, the levers must be raised to a precise height to allow the bolt to slide through; if the levers are too low or too high, the bolt cannot pass. It is a more sophisticated and safer version of the older lever tumbler lock, in which you merely need to lift the lever high enough to get the bolt past, making it easier to pick and break. This type of lock requires the use of a bitted key, or a key that has special, unique cuts of different lengths and depths that correspond uniquely to the tumblers of just one lock, again making it trickier to pick this type of lock. If you would like to buy new locks or change your existing locks, keep reading to learn more about the advantages of the double-acting lever lock.
1 - Picking Resistant
Because they’re more complicated, double-acting lever locks are harder to pick than other locks. In fact, although all double-acting lever locks have at least one stump, the best versions have 3 or more stumps that help to protect not only against lock picking, but against drilling and more violent forms of manipulation as well. This makes it a great lock for high traffic or security-compromised areas.
2 - Size
Various improvements have been made to the double-acting lever lock that allows it to be made thinner and flatter without compromising its security, giving homeowners more flexibility in terms of design and aesthetics. These locks have special gates on the underside of the bolt, whereas the levers are shaped like see saws, necessitating an absolute precision for the bolt to pass. This type of construction also means that the levers themselves within the lock don’t have to bear any weight, so the entire locking mechanism can be thinner and flatter, while still remaining highly weight and pressure resistant.
3 - High Grades
Manufacturers give different grades to different kinds of locks from Grade 1 to Grade 4. Grade 1 is the cheapest, and also least reliable, type of lock, while Grade 4 is the highest. Double-acting lever locks are given the highest, Grade 4 distinction. While there are other, even tougher locks out there for industrial purposes, when it comes to a domestic setting, a double-acting lever lock is therefore one of the toughest locks you can get on the market without compromising on aesthetics; you can still get all the protection without having to get a lock that is huge and bulky.