The TTV bronze disc carbon steel butterfly valve is particularly suited to the marine industry where process corrosion resistance is paramount. A rilsan coated body and stainless steel stem offers additional resistance to corrosion and seawater with soft seat material to suit a range of fluids and mediums. The TTV range of bronze disc butterfly valves come with approvals from recognised bodies such as DNV, ABS, LR and Bureau Veritas. The bronze disc valves are commonly used in oil and gas processing plants as well as marine. The quarter turn action offers quick opening or closing with ease of operation and the valve has good flow control characteristics. In the wide open position, the only obstruction to flow is that due to the thickness of the disk, so the pressure drop across the valve is small.