ITT’s new Model HD 150/300 knife gate valves have been installed on a test basis as isolation valves to divert the flow of extremely abrasive mining and tailings slurries in hydro-transport pipelines in the Canadian oil sands. To serve in these challenging work conditions, the HD 150/300 knife gate valves are manufactured with abrasion-resistant metal alloys. The valves feature a carbon steel body and 304 stainless steel seat rings with a chrome-carbide overlay. They are hard-faced on the port where the abrasive slurry flows through the valve and on the face of the seat where the knife gate seals against the seat. The model HD 150 and model HD 300 knife gate valves differ in working pressure ratings. The Model HD150 is an ANSI Class 150 rated valve with a 285psi working pressure. The model HD 300 is an ANSI Class 300 rated valve, with a 740psi working pressure. The HD 150/300 valves are offered in 6in through 36in diameters, with optional larger sizes available. These valves are manufactured in bonneted or non-bonneted configurations with various actuation configurations and options to meet customer requirements.
