Director of RGR Technologies Ross Hunter tells Engineering News that the Kew-based com-pany has decided to reposition its marketing approach for a number of reasons.
Hunter explains that the first reason is that, when the company markets internationally, there are a number of competitors who are capable of offering the same, or similar, services. “RGR views the market in South Africa as being fairly open with very few competitors offering similar services and we believe that the service we are capable of offering is unique in this country in a number of ways,” says Hunter.
In order to increase market presence in South Africa, RGR Technologies has introduced a new series of trunnion ball valves for a range of industries.
“Mining has always been our prime focus area but now, with this market realignment, we have realised that we will have to offer our product to more than just the mining industry. With this in mind, we have released a series of valves for the petrochemical, oil-and-gas and pulp-and-paper industries,” explains Hunter.
Head of engineering and marketing at RGR Technologies Wally Walters says the valves on offer for these industries are essentially the same but that a few minor adjustments to the trim materials can result in drastically different capabilities and performances. The series of valves released for the petrochemical industry is a fire-safe bidirectional type with metal seating.
“Ensuring a 100% leak-proof ball valve using metal seating is extremely difficult. The ball must be a perfect sphere otherwise the seat may not fit tightly to the ball when required,” explains Walters.
He adds, “Using the latest grinding equipment at RGR technologies, we have developed a system for creating a perfectlyshaped ball.” The use of metal seats is necessary as this is one of the reasons why the valve is considered fireproof. The valves can be constructed from any required material from A105 to super- duplex stainless steels. The material selected determines the temperature range but Walters says that the valves could withstand temperatures of anywhere between 46