Despite the fact that the level lock first appeared in the early nineteenth century, it still remains one of the most popular means for locking doors, and its design is now considered to be as protected as possible from both mechanical and “intellectual” breaking.
Device features
The secret part of the level lock is a package of plates (level) with curly cuts. When you open the lock, they are pushed with special protrusions on the key beard.
The beard of the key, if it is used “correct”, catches the tooth located on the shank of the bolt, and the pin on the crossbar passes through the slot and unlocks / locks the doors. Otherwise, the suvald block the system.
Such a lock can have from one to five crossbars, depending on its series (lightweight, light, heavy).
To increase secrecy, a butterfly key with a double beard is often used for a level lock. With the same amount of leopard, the more prominent the “wings” of the key are, the higher the secrecy of the castle itself.
Advantages and disadvantages
Pros:
- Locks are unpretentious and durable - the work of high-quality products involves many years of operation, and seizing mechanisms in them is a rarity.
- Reliability - the probability of failure of the mechanism is close to zero.
- Such locks have increased resistance to mechanical breaking (to drilling and knocking out).
- These devices resist vandals - if foreign objects enter the keyhole, the mechanism does not fail.
Minuses:
- A massive key, from which the impression is simply taken and a duplicate is made.
- On both sides it is locked only with a key.
- By picking master keys, there is the possibility of an “intellectual” hack.
Difficulty choosing
Locks of this type are divided into classes for breaking resistance. There are only four such classes. All of them, except the first, are subject to state certification without fail. The model of the level lock is selected individually, taking into account the design features of the doors: narrow / thin, metal / steel, wide / massive.
The keys for such locks are relatively heavy and large, usually with double-sided barbs. This increases the number of secret combinations. In addition, you can choose key options that exclude unauthorized duplicate production, as well as those that can be folded.
Below we offer a small overview of the models of lever locks for doors from popular manufacturers, which have earned consumers' recognition for the structural complexity of the mechanism, stable quality, high performance of the structure and burglary resistance.
Mauer sumo
This lock for metal doors with three-way, three-way locking is a novelty with a high degree of protection in the world of closing systems. The device with exceptional reliability and the ability to mount on massive steel doors.
The mechanisms and case of this lever lock for a metal door are made of high quality steel, which is highly durable. The use of two different types of locking mechanisms with unique double closing works separately from one another. A high degree of secrecy and protection against hacking of the cylinder mechanism and a level lock, which works with an asymmetric key, provide blocking of the entire structure. This feature significantly increases the life of the mechanism. On the inside, the unlocking is carried out by a manual spring mechanism.
The keys used for this lock are standard sizes. This will not cause you any inconvenience when wearing them. Unlike keys for standard metal door locks, which are usually very large. If the original key is lost, the lock design allows you to replace only the main or only additional mechanism, but not the entire system.
Mottura Castle 52.771
This model is a single-lever level standard of simplicity and quality of a lock for an entrance metal door. There is a reversible latch. It is possible to connect additional locking rods.
The lock is equipped with a secret mechanism with coil springs and a double beard. The secrecy of the device can be changed by installing another module with levers, which is equipped with a new set of keys. The main part of the suvald has false grooves, the part can be set with a key and be without springs. The keys are asymmetrical - they have different secrets at six different beard heights. The described solutions are aimed at preventing intelligent hacking methods by the manufacturer.
In the kit, in addition to the lock, there is a locking bar, a set of five keys, external and internal decorative overlays.
Securemme 2500F
This is the main lever lock for doors under the handle with a three-way locking, a master key and a removable nukle. This device provides "freedom of use" - the design of its system allows you to remove the additional locking mechanism at the request of the consumer.
Specifications:
- reverse latch with simplified rearrangement;
- the closed lock case protects from the entry of debris and dust into the mechanism;
- protection against driving inside the crossbars;
- 5 keys and a mounting key included;
- in case of loss or theft, the ability to change keys using a removable secret part (nucleo);
- end plate color - nickel;
- four crossbars with a diameter of 14 mm.
Level Castle "Guardian 40.11 QUATTRO"
This model has an innovative design of the lock and the principle of operation - window type levers and gear mechanism.
This lock has unique protection against the most common hacking methods:
- protection against self-impression key;
- lock pick protection;
- internal armor plate, which is installed on the bolt shank;
- the presence of external armor plate;
- drilling protection;
- the cut-off gear sleeve and the presence of false grooves when turning the key block the side hole of the lock well and restricts access to master keys through keyhole.
Disconnect function from the latch handle - in the closed position of the lock, even when the handle is pressed, the latch remains in the locked position.
The ease of turning the key is ensured by the presence of window-type levers, which exclude the possibility of a breakthrough and allow the key to be rotated with ease.
Additional options:
- elongated keys;
- additional number of keys;
- making locks with the only secret.
Recoding lock
Cisa 57685 CAMBIO is a “lower” lock, which serves both for fixing the door with a latch and for locking.
- The diameter of the crossbars is 18 mm.
- The latch is removed with a pen or key.
- Full locking by 4 half-turns of 180 degrees.
- 5 keys included and master key.
- Departure - 30 mm.
CISA level locks feature the New Cambio Facile conversion system, which allows multiple transitions to a new set of keys. A very simple recoding process. Such a system is convenient in cases of loss or theft of keys and the risk of them falling into the wrong hands. Initially, the lock is equipped with a conversion kit and one mounting key. Recoding can be carried out an unlimited number of times at any time. The lock is completed with five new keys after transcoding.
Locks from CLASS
The manufacture of particularly complex models of locking mechanisms to prevent unauthorized access is the main focus of CLASS.
Affordable for ordinary consumers, the price of “Class” level locks allows their models to compete successfully with similar products from world famous brands.
The CLASS GS-MLZ lock can be mounted on the right and left doors, which open both inward and outward.
- lock details are made of an anticorrosive alloy and are protected from corrosion by a protective and decorative coating;
- in the closed position, the door is fixed by means of a latch, which is controlled by handles from both the outside and the inside of the door;
- the deadbolt is made in the form of a three-gear mechanism, diameter is 12 mm, the departure of the deadbolt for 2 turns of the cylinder mechanism is 26 mm
- the type of cylinder mechanism determines the number of combinations of secrecy.
Castle bill of waybill
The lock "Elbor Lazurit 1.02.051" is designed for installation on light interior and exterior metal doors. Suitable for right and left doors as an additional lock.
There is a system of protection against sawing rods and drilling. This model is supplied without a handle.
Equipment:
- Castle.
- Set of overlays.
- 5 keys.
- Kit for fasteners.
- Installation and operation manual.
"METTEM 8 842.0.0 Chrome"
This mortise lock is suitable for installation both in the doors of metal cabinets and for entrance doors as a non-main locking device. The lock is equipped with one direction of locking - three steel bolts with a diameter of 14 mm extend from the housing by 22 mm. The door is locked with such a lock for two full half-turns. The lock is equipped with a high-alloy alloy faceplate, as well as two stainless steel overlays for the key well.
The model has three brass keys with a plastic head and does not have a latch. That is why it is recommended as a second locking device.
Dual-system FIAM ISEO 618 DP-1
This model is the main two-system lock of the highest quality. Interchangeable in size with similar locks CISA, Mottura.
The lower bolt of the lock is controlled by EURO DIN - a standard cylinder, which is purchased separately according to your capabilities and door thickness.
Additional traction and 4 upper locking bolts are controlled by a leveling mechanism - 144 thousand combinations, 6 levels. The operation of the lock mechanism, in comparison with analogues, is softer and smoother.
Equipment:
- two decorative overlays;
- 5 main keys;
- AMS system - lock pick protection;
- RBS system - protection against knocking out of the 6th class.
The lock is equipped with a reversible latch. Experts recommend additionally installing an armored plate and an armor plate on the leveling part of the mechanism.