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In 1943, William Ainsworth a resident engineer with Luipaardsvlei Gold Mine entered into an agreement with the Barron Brothers to take over their small engineering business together with his two sons William and Alexander. They were manufacturing low pressure valves as well as making tools and sharpening drills etc. The products and development of the company changed. Ainsworth & Sons (Pty) Ltd manufactured virtually all the high pressure valves in the mining sector in the Welkom area which replaced imported valves.

Water supply, reticulation and irrigation projects were soon to follow. In the 1960’s the first butterfly valves were added to the Ainsworth range and were installed in large water pipelines in South Africa as well as Namibia, Angola and Mozambique. Many of these valves are still in use today.

Sleeve- type control valves were added to the product range and have been installed in most of the dams in South Africa. The largest of its kind, 2300mm Sleeve Valve at Van De Kloof Dam (P.K. Le Roux) in 1974. Other dams we supplied to mention just a few, Pongola Dam (J.G. Strydom Dam), Blyderiver Dam, in 1973 and for Mtata Dam. All these valves are still in operation today in these dams.

Towards the end of the 1970’s they entered the standard waterworks market with a superior Resilient Seal Gate Valve. The manufacture of these valves commenced in 1978.

This RSV was the first valve of its kind to be awarded the SABS mark of approval. It replaced most of the conventional Wedge Gate Valves in the market. In 1984 Ainsworth purchased Apex International Valves. By consolidating the Johannesburg and Vereeniging operations, in Robertsham in 1989, Ainsworth became the largest valve manufacturer under one roof in South Africa at the time. We also manufacture a range of world standard, high pressure regulating valves and systems for the water supply schemes and mining operations.

Ainsworth Engineering changed ownership and is now one hundred percent (100) percent black owned. IDC assisted with finance to acquire the business and property. The new shareholders have invested on new machines and equipment. The company has employed new management personnel to reflect new ownership.

All valves are 100% locally manufactured and the contract value was in excess of 80 Million Rand. Ainsworth adopts a strict approach to quality control; it is ISO9001 listed and where applicable, bears the SABS mark.

Ainsworth Engineering is a member of SAVAMA (South African Valve and Actuator Manufacturers Association) an association within SEIFSA as well as a member of VAMCOSA (Valve and Actuators Manufacturers Cluster of South Africa). As a member of VAMCOSA, Ainsworth subscribe to a pledge to uphold the principles and policies of the Codes of Ethics and the Constitution. We remain as one of few real local manufacturer of valves in South Africa.

Contact Details:

Tel: (011) 433-3968
Fax: (011) 433-9107

Physical Address:

44 Harry Street
Johannesburg South