ALLO® Series N Control Valves – up to PN 160
Powered control valves for steam, gas, and liquid media – rated up to PN 160.
For industrial control applications
The drive, characteristic curve, and design are selected to suit the process.
N Series Control Valves for Industrial Process Control
The ALLO® Series N control valves are powered control valves for steam, gas and liquid media. They are used in industrial and process plants and are available in pressure ratings up to PN 160.
Electric, pneumatic or hydraulic actuators are available for operation. Depending on the control task, the series can be designed with a linear or equal-percentage characteristic. An optional multi-stage pressure relief system enables gradual pressure reduction.
The modular valve system utilises standardised components and allows for project-specific configuration. For steam applications, the series can be supplied on request as an integrated steam conditioning unit with downstream cooling. The specific selection depends on the operating and plant parameters.
For three types of media
Steam, gas, and liquids.
Three actuator types available
Electric, pneumatic, hydraulic.
Up to nominal pressure PN 160
Maximum nominal pressure of the series.
Two characteristic curves available
Linear or equal-percentage.
Modular valve system
With standardized components.
Optional steam conditioning
With downstream cooling upon request
Advantages and Models of the N Series Control Valves
Actuators Suited to the Control Task
Modular Design and Customizable
Options for Demanding Steam Processes
Technical Data for ALLO® Series N Control Valves
An overview of the most important verified performance characteristics—from media and nominal pressure to actuator types, performance curves, and optional system configurations.
Design and Operation of Series N Control Valves
Modular Valve Design with Selectable Actuator
Series N is designed as a modular valve system with standardized components. Depending on the control and system configuration, electric, pneumatic, or hydraulic actuators are available. This allows the actuation to be tailored to the existing automation and utility system. The modular design supports various project-specific configurations while also facilitating maintenance and future modifications. The actuator, characteristic curve, and optional pressure relief stages are combined according to the control task. The result is a design tailored to the medium, pressure conditions, and the requirements of the respective process plant.
How the N Series Works
The series is designed with either a linear or equal-percentage characteristic, depending on the control task. The selected actuator operates the control valve within the specified control concept. For applications with increased pressure relief requirements, a multi-stage pressure relief system is available as an option. For suitable steam processes, the control valve can be combined with downstream cooling to form a steam shaping station upon request. The appropriate configuration is determined based on the process data. This includes, in particular, the medium, inlet and outlet pressures, pressure differential, flow rate, temperature, desired nominal diameter, connection, control task, and installation situation
Technical Design and Inquiries Regarding the N Series
When selecting the appropriate model, the following factors can be taken into account: medium, inlet and outlet pressure, pressure differential, flow rate, temperature, desired nominal diameter, connection type, actuator type, control task, and installation conditions.