PLUNGER / NEEDLE TYPE CONTROL VALVE

Precise Flow Regulation & Cavitation Control

IO Valves Plunger (Needle) Type Control Valves are designed for accurate flow regulation, pressure control, and safe energy dissipation in highpressure water systems. The axial movement of the plunger allows smooth throttling across a wide operating range while maintaining excellent hydraulic stability. These valves are ideally suited for applications involving high heads, variable flow conditions, and cavitation-prone locations such as pumping stations, transmission pipelines, and hydro projects.

Design & Testing Standards

Body : Ductile Iron

Cylinder : Stainless Steel (SS 304 / SS 316)

Plunger / Disc : Stainless Steel (SS 304 / SS 316)

Stem : Stainless Steel (SS 304 / SS 316)

Sealing Surfaces : Stainless Steel

Stem Nut : Bronze

Sealing Gasket : EPDM

O-Rings : EPDM / NBR

Coating : Epoxy Powder Coating, minimum 250 microns

• Precise and stable flow regulation through axial plunger movement

• Low head loss in fully open position

• Effective cavitation, noise, and vibration control

• Bubble-tight shut-off with reliable sealing system

• Pressure-independent operation with low operating torque

• Gearbox-operated mechanism for smooth positioning

• Suitable for manual and electric actuator operation

• SCADA and automation compatible

Key Features

Size Range

DN 65 – DN 1400

Pressure Rating

PN 10 / PN 16/PN 25/ PN 40/ PN 63

Reservoir inlet and outlet control

Typical Applications

Diaphragm Type Hydraulic Control Valve

Material of Construction

Medium: Water

Operating Temperature: –10°C to +80°C

Flange Standard: EN 1092-2

Raw water intake and treatment plants

Water transmission and distribution pipelines

Irrigation and canal systems

Hydro electric power projects

Pump discharge and pump bypass systems