What is a needle valve?

Needle valves, also known as plunger valves, are regulator valves that allow operators to accurately control and regulate water flow and pressure. The valve's precision comes from the movement of the shaft that makes the gearbox move the piston tube through a sliding motion in the open or closed position-depending on the request from the control system.

When do we need needle or plunger valves?

Needle and plunger valves can be used in a variety of applications that require the configuration of water flow or pressure. In the water treatment and distribution segment, dams, reservoirs, power plants and in the industrial world, needle valves can be utilized for:

• Control flow
• Regulate pressure
• Starting pumps
• Turbine bypass
• Discharge
• Inlet reservoir
• Regulates air flow

When to use needle / plunger valves?

Compared to diaphragm control valves, needle and plunger valves can be used with higher differential pressure, and our standard needle valve range covers a pressure range up to PN40, and on request up to PN100. Our standard size range covers DN80 to DN1600, and on request up to DN2000. Needle valves can be manually actuated or can be controlled by electrical, hydraulic or pneumatic actuation.

Read about features and benefits of AVK needle valves and more about our variants and configurations though our product finder below.