Manual Butterfly Valve

Ductile Iron Telescopic Flanged Butterfly Valve SD341X-16Q

Ductile Iron Double-Eccentric Flanged Butterfly Valve D342X-16Q

304 Stainless Steel Worm Gear Grooved Butterfly Valve D381X-16P

304 Stainless Steel Worm Gear Wafer-Type Butterfly Valve D371X-16P

Ductile Iron Worm Gear Wafer-Type Butterfly Valve D371X-16Q

Cast Steel Worm Gear Wafer-Type Butterfly Valve D371X-16C

Ductile Iron Worm Gear PTFE Wafer-Type Butterfly Valve D371F-16Q

304 Stainless Steel Worm Gear PTFE Wafer-Type Butterfly Valve D371F-16P

Cast Steel Worm Gear PTFE Wafer-Type Butterfly Valve D371F-16C

Cast Steel Worm Gear Wafer-Type Ventilation Butterfly Valve D371W-1C

Cast Steel Worm Gear Flanged Ventilation Butterfly Valve D341W-1C

304 Stainless Steel Worm Gear PTFE Flanged Butterfly Valve D341F-16P

Ductile Iron Worm Gear PTFE Flanged Butterfly Valve D341F-16Q

Cast Steel Worm Gear PTFE-Lined Flanged Butterfly Valve D341F-16C

Ductile Iron Handle-Operated Flanged Butterfly Valve D41X-16Q

Cast Steel Flanged Ventilation Butterfly Valve D41W-1C

Common Types of Manual Valve

Manual valve are critical control components in pipeline fluid conveyance systems. Widely used in industrial applications, they are designed to ensure smooth fluid flow and safe system operation. This article focuses on four common types: manual butterfly valves (featuring a simple structure and easy operation; available in handle-operated and worm-gear types, suitable for pipes of various diameters), manual gate valves (commonly used in water supply systems; available in exposed-stem and concealed-stem types, with an intuitive indication of open and closed states), manual ball valves (used for shutoff, diversion, and flow regulation, with a spherical operating element), and manual globe valves (offering good wear resistance and easy maintenance, though requiring high torque to open and close, with a nominal diameter ≤200 mm). Selection should be based on pipeline characteristics and operating conditions to ensure efficient and stable system performance.

Ductile Iron Worm Gear Flanged Butterfly Valve D341X-16Q

304 Stainless Steel Wafer-Type PTFE Butterfly Valve D71F-16P