Product Overview
JFC JFlow SR75 Rack-and-Pinion Actuator with Series 53 Limit Switch – Unused NOS
The J.F.C. Model SR75 actuator, paired with a Series 53 valve position limit switch, delivers reliable valve automation for industrial control environments.
Designed with an extruded aluminum body and honed cylinder, the SR75 ensures reduced friction and extended service life. Its piston-driven rack-and-pinion system provides symmetric mounting and rapid cycle response. With field-reversible rotation, modular spring cartridges, and independent travel stop adjustments, this actuator is engineered for flexible integration and precise valve alignment.
The Series 53 limit switch adds position feedback and visibility, featuring a Namur mount, dual conduit entries, and NEMA-rated enclosure options. Its multipoint terminal strip and adjustable indicators allow for safe, accurate, and versatile control system connections.
Product Condition
Unused, new old stock. Original conduit entry cover stickers are intact. The casing shows some cosmetic blemishes such as scratches and scuffs, but the unit remains in very good, serviceable condition.
Product Overview
JFlow Controls builds actuators and accessories trusted in process industries worldwide. The SR75 actuator and Series 53 limit switch combination is a standard for valve automation systems, ensuring reliable performance in water treatment, chemical, petrochemical, and manufacturing operations. Built to ISO, DIN, and VDI/VDE standards, this pairing integrates seamlessly with automation hardware and control networks.
Key Features
- Rack-and-pinion actuator design with symmetric mounting
- Extruded aluminum body with corrosion-resistant construction
- Honed cylinder surface for reduced wear and long service life
- Field-reversible rotation by piston inversion
- Two external travel stop adjustments for accurate positioning
- Convertible between double-acting and spring-return models
- Series 53 limit switch with Namur mount and dual ½” conduit entries
- Independent open/close switch adjustment for position feedback
- Multipoint terminal strip with 8 standard contacts
- NEMA 4, 4X, or 7 enclosure options for safe use in harsh environments
- Visual beacon indicators for at-a-glance valve status
- Blowout-proof pinion shaft and modular spring cartridges
Applications
- Automated valve control in chemical and petrochemical plants
- Water treatment and wastewater management systems
- Process automation in manufacturing and fabrication lines
- PLC-based industrial control and monitoring
- Pneumatic and fluid handling systems
- Hazardous-area valve monitoring with NEMA-rated switch housing
- General industrial automation requiring precise valve alignment
Frequently Asked Questions
What is the condition of this actuator and switch?
Both are unused, new old stock. The actuator has minor cosmetic scratches but retains original factory stickers. Both remain serviceable.
Can the SR75 be configured as double-acting or spring-return?
Yes. The SR75 actuator design allows conversion between double-acting and spring-return by adding or removing modular spring cartridges.
What are the enclosure ratings for the Series 53 limit switch?
The Series 53 is available with NEMA 4, 4X, or 7 enclosures, supporting use in both general and hazardous environments.
Does the Series 53 support position feedback to controllers?
Yes. It uses a multipoint terminal strip with independent open/close switch adjustment, enabling reliable feedback to automation controllers and PLCs.
How is valve position displayed for operators?
The Series 53 includes adjustable 3D visual indicators and beacon lights on the housing, making open or closed status easily visible on-site.
Built for endurance and precision, the SR75 actuator and Series 53 switch carry JFlow’s reputation for reliability into your system — their next story belongs to you.
