OKE Electric Multi-Stage Control ValveOverview

The American OKE electric multi-stage control valve is a type of valve controlled by an electric actuator, commonly used in applications requiring precise regulation of fluid pressure, flow, level, or temperature. This valve is characterized by its ability to provide continuous adjustment, making it suitable for fluid control within high-pressure differential ranges. It is particularly applied in boiler feedwater systems of thermal power plants and in high-pressure differential automatic control systems in industries such as petrochemicals.

OKE Electric Multi-Stage Control ValveFeatures

The design of the electric multi-stage control valve typically includes multi-stage cage sleeve valve cores or axial labyrinth-type valve cores. These designs effectively control the flow velocity of the medium passing through the valve, thereby reducing noise generated by high-pressure gas or steam within the valve and avoiding cavitation in liquids. The electric actuator is usually integrated, with a built-in servo amplifier, and can control the valve opening degree through input control signals (such as 4–20 mA DC or 1–5 V DC) and power supply.

OKEElectric Multi-Stage Control Valve Application Areas

Electric multi-stage control valves are widely used in various fields, including but not limited to:

Drainage systems for high-pressure inner and outer cylinder conduits of steam turbines

Drainage of medium-pressure cylinders, medium-pressure control valves, low-pressure cylinders, and their extraction systems in steam turbines

Spray water desuperheating for boiler superheaters

High-pressure differential spray water for high-pressure bypass and various desuperheating systems

Feedwater recirculation, feedwater bypass valves, periodic blowdown systems, etc.

Medium regulation in other high-pressure differential environments

OKE Electric Multi-Stage Control ValveDetailed Parameters

Diameter DN15–300 mm

Pressure PN10–PN420

Applicable Temperature -30–+425°C

Applicable Medium Water, oil, gas, etc.

Connection Method Flange or welded

Valve Body Material WCB, 304, 316

Valve Disc Material 304, 316, PTFE-lined

Sealing Material PTFE, 304, 316

Flow Direction Unidirectional

Purpose Regulation

Drive Method Electric

Type Straight-through