UNIMAC Gate Valves are provided with properly machined and lapped backseat to ensure re-packing under pressure while fully open. Availability of Solid Wedge, Flexible Wedge, Split Wedge and Parallel Wedge designs offer maximum option to clients for suitable selection.Gaskets and Gland packing material are selected to suit service conditions like temperature, corrosion, erosion, pressure, vacuum and other applications.