About Us

How we started

The family business of Derrick Purdue and his sons, Sinclair and Julian, started out in small premises, with 3 staff members, in 1982 in Cape Town’s CBD, importing and assembling CISA padlocks.

Their passion was to supply high quality locking devices in South Africa, whilst creating employment that was fair and uplifting. Our people, been given the opportunity, have grown from general workers to become sales managers, credit controllers, supervisors, master key planners and  product specialists.

Today, D. Purdue & Sons is the proud sole importer and distributor, into South Africa and Sub Saharan Africa, of CISA branded locks from Italy, stocking over 3500 CISA products. We currently employ 80 staff members at our Cape Town Head Office, with offices in Johannesburg and Durban.

D. Purdue & Sons and CISA – The Perfect Partnership

CISA – an Allegion Company – is the leading brand in Europe and South Africa, in the Lock Security and Access Control System sectors. With six manufacturing plants, and a worldwide distribution network in over 70 countries, CISA has a pre-eminent role in the international market. Almost all of the 30 000 products available in the CISA Catalogue are manufactured, tested and certified according to the European Norms – a stringent set of prescribed Standards that are accepted in over 32 countries in Europe.

D. Purdue & Sons and CISA have forged a close, highly successful partnership over the years. CISA has the vast product range, manufacturing capacity, intellectual property and cutting edge R & D, while D. Purdue & Sons has the assembly capabilities, over 30 years industry experience and product expertise, enabling us to assemble over 500 different types of cylinders, padlocks and locks, to customer requirements and specifications.

Expanding our horizons

Ingersoll Rand creates ALLEGION for Security Products and Services – 2013 extract.

Allegion will compete in the $30 billion global security products and solutions industry by investing in attractive developing markets and emerging technology; leveraging its expertise to deliver differentiated products and services in key market segments; building upon its operational excellence program; and pursuing acquisitions selectively to accelerate expansion into attractive markets and products

The portfolio includes strategic brands CISA®, Interflex®, LCN®, Schlage® and Von Duprin®; and other brands including aptiQ®, Briton™, Bricard®, BOCOM Systems™, Dalco™, Dexter®, Falcon®, Fusion Hardware Group™, Glynn-Johnson®, ITO Kilit™, Ives®, Kryptonite®, Legge®, Martin Roberts™, Normbau™, Randi™, Steelcraft® and XceedID®.

How can we help you?

Click on the link below to speak to one of our consultants.