NE Series Electro Pneumatic Valve Positioner
The NE Series (NE724) is an electro pneumatic valve positioner designed to operate on a standard milliampere DC signal from...
What This Model Does
The NE Series (NE724) is an electro pneumatic valve positioner designed to operate on a standard milliampere DC signal from a controller or DCS. It delivers proportional pneumatic output to drive cylinder or diaphragm actuators on rotary or linear control valves with high repeatability and accuracy. Built with a low-mass balanced moving force coil and a rugged spool design, it operates reliably in severely vibrating environments such as paper mill lines. It serves as a direct form, fit, and function replacement for Metso Neles NE700 and NE724 units without requiring actuator modifications.
| Model | NE724 / NE Series |
|---|---|
| Type | Electro pneumatic valve positioner |
| Input Signal | Standard milliampere DC |
| Nominal Input Resistance | 190 ohms |
| Actuator Compatibility | Cylinder or diaphragm actuators |
| Valve Compatibility | Rotary or linear control valves |
| Action Modes | Direct or reverse acting, split range standard on cam |
| Pilot Valve | Multiple sizes available to match stroke volume |
| Housing Finish | Painted black, blue, yellow, or custom specified |
| Warranty | 18 months |
Why Buyers Specify This Model
- Low-mass balanced force coil assembly maintains steady valve throttling even in high-vibration piping environments
- Direct and reverse action switches by turning the changeover piece and cam without repiping the pneumatic tubing
- Standard feedback cam includes split-range and reverse-action profiles to simplify multi-valve sequencing setups on site
- Selectable pilot valve sizes match the actuator volume to minimize stroke response time across different valve sizes
- Zero and range adjustments calibrate quickly under the cover with minimal interaction between the calibrated set points
- Rugged compact design with few moving parts withstands seismic vibration, supply pressure shifts, and process valve loads
- Standard 190 ohm nominal input resistance integrates cleanly with standard milliampere DC controller and DCS output channels
Problems It Solves
- Heavy pipeline vibration knocks positioner calibration out of alignment or causes premature mechanical wear on moving assemblies
- Reversing actuator action requires disconnecting, replumbing, and testing rigid pneumatic tubing runs between positioner and actuator
- Long factory lead times on original Metso Neles positioners leave critical process control loops operating on manual bypass
- Mismatched positioner capacity causes slow actuator response times on larger cylinder or diaphragm valve volumes
- Field calibration shifts zero point every time the technician adjusts span, dragging out routine instrument commissioning time
Application Scenarios
- Paper mill stock line control valve operating under continuous pipe vibration from nearby pumps and agitators
- Cylinder or diaphragm actuator throttling a rotary control valve where quick response times are critical
- Split-range throttling installation where two valves must sequence accurately across a single milliampere controller loop
- Replacing obsolete or worn Metso Neles NE700 or NE724 positioners without modifying existing actuator tubing or brackets
- Linear or rotary valve assemblies where reversing actuator action must be configured without changing external pneumatic lines
Who It Is For
- Plant instrument technicians replacing worn Metso Neles NE700 or NE724 positioners during maintenance turnarounds
- Valve and actuator OEMs seeking drop-in positioners finished in custom colours with private-label nameplate branding
- EPC contractors sourcing reliable electro-pneumatic positioners for paper industry and continuous process throttling skids
- Instrumentation distributors stocking form, fit, and function replacement spares for local industrial processing facilities
- Maintenance teams needing fast 2 to 3 day dispatch to restore unthrottled control valves after positioner failure
Technical Features
- Balanced low-mass moving force coil assembly designed specifically to prevent signal distortion in severely vibrating services
- Reversible changeover piece and dual-profile feedback cam allowing rapid field conversion between direct and reverse action
- Interchangeable pilot valve sizes that match positioner air capacity directly to the specific actuator volume
- Standard 190 ohm nominal input resistance compatible with standard industrial milliampere DC control signals
- External-accessible calibration mechanisms allowing fast zero and range adjustment with minimal mutual interaction between settings
- Rugged spool valve construction providing steady throttling output despite fluctuations in air supply pressure or valve load
Materials and Construction
- Rugged metal housing construction designed for vibration resistance and industrial durability
- Balanced low-mass moving force coil assembly and stainless internal components
- Full material specifications and finish details are available on the engineering datasheet
Dimensions and Connection Detail
Reference image published with this model on the original catalogue. Confirm critical dimensions against the datasheet before machining a bracket.
Manufacturing and Quality Control
Every unit is calibrated and stroke tested before it is packed. We can film or photograph your units in the sample room or warehouse before they ship.
Manufacturing Steps
Housing casting, machining, and inspection
Assembly of the balanced low-mass force coil and spool valve mechanism
Pilot valve sizing and installation based on actuator stroke volume requirements
Bench testing across milliampere input range, direct-reverse switching, and split-range action
Zero and span calibration verification with air supply fluctuation checks
Surface finishing in custom paint colours and private-label nameplate marking
Protective packaging in export cartons for courier or sea freight delivery
Quality Control
- Every positioner is calibrated and stroke tested across the milliampere range prior to shipment
- Actual product photos and operational bench videos can be taken in the warehouse upon request
- Faulty units within the 18 month warranty are replaced on photo or video evidence without return shipping
- Replacement units normally ship with the customer next order or immediately via air express for downtime emergencies
Customisation Options
- Custom nameplate engraving and logo marking for private-label valve and actuator manufacturers
- Housing painted in client-specified colours including black, blue, yellow, and custom industrial finishes
- Customised carton labeling and protective packaging configured for distributor resale or project delivery
- Pilot valve sizing matched to customer specific actuator stroke volume and stroke speed requirements
- Assembled supply with matching mounting brackets, limit switch boxes, or feedback accessories on request
How It Compares With the Alternatives
| Standard positioners with heavy coil assemblies | The NE series uses a low-mass balanced force coil that maintains calibrated position without drifting under severe pipeline vibration |
|---|---|
| Positioners requiring tubing changes for reverse action | The NE series reverses action simply by rotating the changeover piece and cam, eliminating external pneumatic replumbing |
| Fixed-capacity electro-pneumatic positioners | Multiple pilot valve sizes allow matching flow capacity to actuator volume, reducing stroke dead time and lag |
| Original Metso Neles NE700 and NE724 units | Provides identical form, fit, and mounting function with 2 to 3 day stock delivery at substantial replacement cost savings |
Fitting and Setting Up This Model
General field procedure. Always follow the datasheet for the exact calibration sequence and any hazardous area requirements.
Rigidly mount the positioner to the cylinder or diaphragm actuator using the corresponding mounting bracket and linkage
Connect clean, oil-regulated instrument air supply and pipe output ports to the actuator chambers
Terminate the DC milliampere control signal to the 190 ohm input coil terminals observing polarity
Select direct or reverse action by positioning the internal changeover piece and cam orientation
Remove the housing cover to access zero and range adjustments with minimal mutual set-point interaction
Select the appropriate pilot valve size to match total actuator air displacement volume for optimal speed
Verify positioner feedback tracking across the full stroke before placing the control loop into service
NE Series Electro Pneumatic Valve Positioner FAQ
Will this directly replace our installed Metso Neles NE700 or NE724 positioner?
Yes. It is engineered as a direct form, fit, and function replacement matching the original footprint, mounting connections, and pneumatic porting.
What is the typical lead time for standard and project orders?
Standard order quantities ship in 2 to 3 days from stock. Large project or OEM production orders normally dispatch in 7 to 10 days.
How do we reverse the action from direct to reverse acting?
You simply invert the changeover piece and the feedback cam inside the positioner. There is no need to repipe pneumatic tubing between the actuator and positioner.
Can you match the pilot valve size to our specific actuator stroke volume?
Yes. Multiple pilot valve sizes are available to tailor output flow capacity to your actuator stroke volume and response time requirements.
What is the warranty coverage if a positioner fails in service?
All units include an 18 month warranty. If a failure occurs, send photo or video evidence and we dispatch a brand-new replacement unit without requiring the return of the faulty item.
Can you provide custom housing colours and private OEM labeling?
Yes. We supply custom nameplates with your brand logo and paint housings in black, blue, yellow, or other specified industrial colours.
Applications Cases and Guides
Where It Is Used
Related Case Photos
Get A Price on This Model
Tell us the quantity, the actuator it goes on and the destination port. We come back with price, lead time and confirmation that the model matches your valve.