Sanco Valves Pvt. Ltd. Manufactures Oval Bonnet Joint Gate Valve. Sanco Valves Pvt. Ltd. Supplies industrial valves. Oval Bonnet Joint Gate Valve is the simplest and most economical configuration for low pressure services and is required to maintain ANSI face-to-face dimensions on Class 150 valves sizes 4"-36". Oval Bonnet Joint Gate Valve has the standard gasket which is corrugated metal, but flat gaskets of other materials are available when specified. These valves are furnished with a circular male and female bonnet joint and spiral wound gasket. It is available in the brand name of Gate Valve - 150 Class.