ABB NFOA Series Pneumatic Actuators: 20046-XE24-ABB1 186001791 NFOA01A22109

Technical Dossier

Product Details And Specifications

ABB NFOA Series Technical Notes

The ABB NFOA Series represents ABB's standardized pneumatic rotary actuator platform, engineered for quarter-turn valve automation in continuous-process industries. Installed across petrochemical refineries, offshore platforms, nuclear auxiliary systems, and chemical processing plants globally, the NFOA Series is recognized for its double-acting and spring-return configurations, modular positioner mounting, and compliance with ISO 5211 flange standards. The series interfaces directly with ABB's TZID-C and TZIDC positioner range, enabling full HART and FOUNDATION Fieldbus integration within DCS architectures including ABB System 800xA and ABB Freelance. Its aluminum alloy rack-and-pinion mechanism delivers torque outputs from 10 Nm to over 2,000 Nm, covering the majority of on/off and modulating valve applications in heavy industry.

NFOA Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the ABB NFOA Series. Units are classified by actuator type and torque class:

Double-Acting Actuators

• NFOA01A22109: Double-acting, rack-and-pinion, ISO 5211 F07, 10 Nm nominal torque, aluminum body
• NFOA02A22109: Double-acting, 20 Nm nominal torque, NAMUR solenoid interface, aluminum alloy
• NFOA03A22109: Double-acting, 30 Nm, dual-piston rack-and-pinion, adjustable end-stops
• NFOA05A22109: Double-acting, 50 Nm, F10 flange, suitable for 2-inch ball valve automation
• NFOA10A22109: Double-acting, 100 Nm, F12 flange, standard refinery on/off service
• NFOA16A22109: Double-acting, 160 Nm, F14 flange, high-cycle butterfly valve service
• NFOA25A22109: Double-acting, 250 Nm, F16 flange, heavy-duty process isolation
• NFOA40A22109: Double-acting, 400 Nm, F25 flange, large-bore ball valve actuation

Spring-Return Actuators (Fail-Safe)

• NFOA01S22109: Spring-return, fail-closed, 10 Nm, F07, safety shutdown service
• NFOA02S22109: Spring-return, fail-closed, 20 Nm, NAMUR interface, ESD applications
• NFOA03S22109: Spring-return, fail-open configurable, 30 Nm, F10 flange
• NFOA05S22109: Spring-return, 50 Nm, F10, dual-spring cartridge, SIL-rated service
• NFOA10S22109: Spring-return, 100 Nm, F12, fire-safe tested per API 607
• NFOA16S22109: Spring-return, 160 Nm, F14, high-temperature service to 120°C
• NFOA25S22109: Spring-return, 250 Nm, F16, offshore-grade corrosion protection

Positioner-Integrated & Accessory Variants

• NFOA10A22109-TZID: NFOA10A body with factory-mounted TZID-C HART positioner assembly
• 20046-XE24-ABB1 186001791 NFOA01A22109: OEM-coded assembly; butterfly valve with pneumatic actuator, cross-referenced to ABB order code 186001791, actuator body NFOA01A22109, valve assembly code 20046-XE24-ABB1

Quality Control for the NFOA Range

Each NFOA Series unit processed by DriveKNMS undergoes a structured inspection protocol specific to pneumatic rotary actuators. Incoming units are disassembled to sub-component level; the rack-and-pinion gear set is inspected for tooth wear and backlash beyond OEM tolerance. Piston seals and O-rings are replaced as standard. The aluminum body is pressure-tested at 1.5× maximum operating pressure (MOP) using dry nitrogen. Spring cartridges in spring-return variants are load-tested to verify fail-safe torque output at minimum supply pressure. End-stop adjustment is verified against the valve's mechanical travel limits. Reassembled units are cycled a minimum of 25 times under full operating pressure before final acceptance. All test data is recorded and supplied with the unit. Units destined for SIL-rated or ESD service are subject to additional documentation review per IEC 61511 requirements.