Sanco Valves Pvt. Ltd. Supplies Butterfly Valve with Forged T-head Stem. Sanco Valves Pvt. Ltd. Manufactures industrial valves. Butterfly Valve with Forged T-head Stem has the standard; circular bonnet joint which is the simplest and most economical configuration for low pressure services. Butterfly Valve with Forged T-head Stem is the most commonly used shutoff valve in the industry today. They are used where minimum pressure drop and bi-directional on-off service is required. This butterfly valve is available in 300 class.