Diaphragm Type Control Valve
IO Valve’s Diaphragm Type Control Valves are hydraulically operated valves used for automatic control of pressure, flow, and water level in water systems. Operated by line pressure through an external pilot control system, the pilot senses system conditions and regulates diaphragm chamber pressure to ensure smooth, accurate, and reliable valve operation without external power—ideal for municipal water and irrigation applications.
Size Range: DN 50 - 300
Pressure Rating: PN 10|16|25
Material of Construction
Body & Bonnet : Ductile Iron GJS 500-7
Seat : SS 304/SS 316
Seat Retainer : SS 304/SS 316
Stem & Plug : SS 304/SS 316
Disc Holder : DI GJS 500-7
Diaphragm : EPDM + Nylon Fiber
Bush : Brass
Spring : SS 304/SS 316
O Ring’s : NBR
Coating : Epoxy Powder Coating with Min.250µ
Flange Drilling : EN1092-2
Medium : Water
Operating Temperature : -10°C to +80°
Key Features
Municipal water supply and distribution networks
Pressure reducing and pressure sustaining stations
Pumping stations and pump discharge control
Reservoir inlet, outlet, and level control
Applications – Diaphragm Control Valves in Water Systems
Hydraulically operated, pilot-controlled design for accurate and automatic regulation
Uses line pressure for operation – no external power required
Reinforced elastomer diaphragm ensures reliable, leak-tight performance
Modular pilot system allows easy configuration for pressure, flow, or level control
Smooth and stable valve operation with minimal pressure fluctuations
Low maintenance design with fewer moving parts
Corrosion-protected body with fusion bonded epoxy coating for potable water service
High control accuracy even under varying flow and pressure conditions
Solenoid-assisted control enables remote ON/OFF operation and automation through PLC/SCADA systems
