The pipeline inspection equipment specialist has agreed to work alongside Madrid-based Mejoras Energeticas.
The partnership will help the company expand into Argentina, Mexico, Panama, Costa Rica, Nicaragua, Honduras, Belize and El Salvador.
The arrangement means Mini-Cam now has a presence in 40 countries.
International sales manager Sven Breitenfeld said: “Following our launch of new product ranges earlier this year, we have an excellent opportunity to grow our overseas business.
“Countries in Central and South America are developing their infrastructure at a rapid rate. Their cities are growing fast, and that is leading to increased demand for fresh and clean water and huge investment to improve their sewer networks.
“Alongside that, pollution and water issues are on the wider political agendas in those regions, so it is important for us to have a presence there.”
Speaking on the partnership, he added: “Mejoras has more than 25 years’ experience of selling sewer-related equipment and cameras.
“It has a great set-up, with teams of product and sales managers and engineers working to deliver the best support to our customers in those countries.
“In addition, Mejoras offers full access to markets in Spain and Portugal for our crawlers and camera systems.
“It is the ideal partner for Mini-Cam as we embark on the next phase of our global expansion.”
Mini-Cam, which was established by Nigel Wilson in 1991, has seen exports soar in the past year. Overseas sales now account for 48% of overall revenues, up from 41% in 2015.
The company, which last year received backing from private equity firm LDC, posted revenues of £10.6m for the 12 months to 31 January.