Sigma Scientific Glass Pvt. Ltd offers Angle Valves. Sigma Scientific Glass Pvt. Ltd is an ISO 9001:2000 certified company. Angle Valves are used in chemical, pharmaceutical, dyes and allied industries. They are made of borosilicate glass 3.3 and PTFE or PFA, which ensures maximum resistance to corrosion. The valve glass body provides visual monitoring of valve operation. These Angle Valves have an outlet at perpendicular angle to the inlet nozzle. These valves are available with 90 degree and 80 degree inlet nozzles angle.