Closed on July 4th

Protecting Your Assets with High-Security Locks

Superior lock and key systems, created with additional safety measures, to protect you assets as best as possible.

High Security Doors

Do all locks provide high security if you are the only one in possession of the matching key? Unfortunately, the answer is no. Only superior lock and key systems are created with additional safety measures in place to reduce the risk of picked locks or duplicated keys. Protecting your assets with high-security locks is your best safeguard.

We provide top security lock services to Pennsylvania, New Jersey, Delaware, and Maryland residents.


The Benefits of Superior Keys

Pin Complexity

Have you ever taken a look at the keys on your key ring? Chances are most of them only have pins on the outside. The unique combination of pins is what makes each key and lock different and secure. To provide superior security, a specially designed system will have pins on both the inside and outside of the key to offer an even higher level of protection.

Patent Protection

Various patents ensure end-user security because it is illegal to duplicate this kind of key without permission. Four utility patents and two design patents make each of your keys many times safer.

Key Bow

A wider and larger bow not only presents users with easier handling, but also extra stamping space if needed.


Thicker high-security keys are also stronger and more durable. The added thickness is another distinguishing quality of the products we produce.

Side-Cut Combos

Factory side-cut combinations are another way that we create an end-user product that is exclusive only to the dealer it is ordered from.


For quality control and to identify the origin of a key, associated end-user or dealer IDs are imprinted onto the product.

Why You Should Work with Great Valley

The steps Great Valley Lockshop technicians take to design and create our locks and keys are indicative of the heightened protection offered to our customers.

Authorized Locksmiths:

Only authorized locksmiths have access to classified information including key codes, equipment to make each key, and key blanks.

Secure Keys:

We make sure no keys can be created before the locks are sold. To meet this objective, locks are sent to authorized locksmiths without any pins. These are added later on when they are sold and the corresponding keys are cut.

Ironclad Duplicate Key Practices:

To have duplicate keys made, an owner must return to the store of purchase. This allows each owner to manage who has access to their keys and who can have them created.
Additionally, for companies seeking full control over keys, we can provide customized options that cannot be duplicated by anyone else.

Visit Our
Neighborhood Showroom

Our friendly staff is always available for questions or concerns when it comes to security needs in your home. Please stop in to visit our showroom located in Malvern, PA, and lock shop to meet with one of our professionals for help in purchasing items to install yourselves. We sell a variety of home locks and home security items right at our shop!

Request a Free Consultation

Get an initial estimate from an expert locksmith right away.

Have a question?

Call us at: (610)644-5334

The Latest Security News & Tips

Frequently Asked Questions
About Commercial Locks

  • Should I change the locks when purchasing or renting a commercial building?

    Whenever a property changes hands, it’s best practice to change the locks or have the locks rekeyed. This is because a new owner or commercial property tenant can’t know for sure that all of the master keys, individual keys, and key duplicates have been collected by the previous owner or tenant. For commercial properties, offices, rentals, apartment and condominium complexes a better option may be rekeying rather than replacing the locks and hardware entirely. Rekeying a lock is usually the less expensive option.

  • Do you provide commercial locksmith services in my area?

    Great Valley Lockshop’s service area for commercial projects spans Pennsylvania, Delaware, Maryland and New Jersey. For commercial clients, we will travel throughout eastern Pennsylvania – as far west as Harrisburg and State College – Delaware, Maryland, and New Jersey. It’s important to include your location when filling out a service request.

  • What types of commercial buildings does GV Lock service?

    Great Valley Lockshop provides commercial locksmith services. These include access control design, door and hardware supply, hardware installation, security services that meet accessibility, emergency and fire exit requirements. Our locksmiths are experienced with working on commercial buildings for educational purposes, namely colleges and universities, as well as healthcare and pharmaceutical buildings with high-security needs.

  • Will GV Lock make copies of keys that say “do not duplicate”?

    There is currently no law in place about “do not duplicate” keys. The engraved words found on many keys for commercial properties is not actually legally binding. Some hardware stores have a policy against cutting copies of these keys without proper authorization. Our locksmiths can duplicate these keys and recommend better security solutions for businesses.

  • Can you unlock a pinball machine?

    If you have lost your keys to your pinball machine or arcade game, have a lock that is not turning correctly or simply cannot get it open, we can help.

Let’s Get You A Free Estimate

Discover what thousands of our customers already know: When you hire Great Valley Lockshop you can expect us to be prompt, passionate and genuinely enthusiastic about your project!

Member of ALOAAllegion Locksmith PartnerYelp Locksmith 5 StarsGoogle Locksmith 5 Stars

We are serious about privacy. We will never share your information with third parties. Please read our Privacy Policy for more information.

Great Valley Lockshop