Worm Gear Manual Operated Butterfly Valves are designed for Pressure rating of PN 25. C & R [Sales & Services] Pvt. Ltd. Manufactures Worm Gear Manual Operated Butterfly Valves. C & R [Sales & Services] Pvt. Ltd. Also manufactures different types of Valves. Worm Gear Manual Operated Butterfly Valves are manufactured to have optimal mix of structural stability, flow efficiency and effective seating coupled with advantage of light weight, compact design and ease of operation. All butterfly valves are manual gear operated to ensure minimum operating torque and maximum performance. These valves given 100% tight shut-off in both directions of flow against vacuum. This series is designed to meet the stringent requirement for all high-pressure lines.