York 375-49340-103 PRV Actuator Kit
The York 375-49340-103 is a genuine OEM pre-rotation vane (PRV) actuator and wiring kit from YORK – Johnson Controls, driving the inlet guide vanes ahead of the compressor impeller on York YK, YT, and YS centrifugal chillers. PRV here means Pre-Rotation Vanes, not pressure relief valve, and the unit is electrically driven rather than pneumatic. These vanes are the primary capacity control mechanism on a centrifugal chiller, when the actuator fails, the machine loses modulation entirely, holding full capacity regardless of load, failing to load, or hunting. This kit is the direct replacement for superseded part numbers 025-29657-001 and 025-29657-002, cross-referencing to ACV-4007.
Key Features
- Genuine OEM kit from York: Johnson Controls, supplied complete with actuator and wiring harness, not as a bare motor requiring separate harness sourcing.
- Direct supersession of 025-29657-001 and 025-29657-002: no adaptation or rework required when replacing either legacy part.
- Cross-references to ACV-4007: matches against third-party service documentation and older parts lists.
- Complete wiring included: eliminates the most common cause of extended downtime on this repair, which is receiving an actuator without the matching harness and connector.
- Restores full capacity modulation: returns the chiller to proportional load control instead of on/off cycling.
- Approximately 14 kg shipping weight: a substantial assembly, not a small control component; plan lifting and access accordingly.
Benefits of Replacing a Failed PRV Actuator
Restored part-load efficiency: Centrifugal chillers spend the overwhelming majority of their operating hours below full load. A chiller that cannot modulate its vanes runs at poor part-load efficiency across nearly its entire duty cycle, which is where the energy cost accumulates, not at design load.
Surge protection: Pre-rotation vane position is integral to keeping the compressor out of surge. An actuator that fails to track its commanded position can put the machine into repeated surge events, which impose severe mechanical stress on the impeller and thrust bearing.
Reduced compressor start cycles: Without vane modulation, the control panel is forced to manage load by cycling the machine. Each start is a wear event on the motor, starter, and lubrication system.
Stable chilled water supply temperature: Loss of vane control produces supply temperature swing, which propagates downstream as zone temperature and humidity complaints throughout the building.
Preserved chiller warranty and serviceability: Fitting non-genuine control components on a centrifugal machine still under warranty can void coverage on related failures, and complicates future factory service support.
Technical Specifications
| Specification | Value |
| Part Number | 375-49340-103 |
| Official Description | Kit, Actuator / Wiring, PRV |
| Manufacturer | YORK — Johnson Controls |
| Function | Pre-rotation vane (inlet guide vane) actuator |
| Supersedes | 025-29657-001, 025-29657-002 |
| Cross-Reference | ACV-4007 |
| Alternate Formats | 37549340103, 02529657002 |
| Supplied As | Complete kit — actuator plus wiring harness |
| Shipping Weight | Approximately 14 kg |
| Package Dimensions | Approximately 37 × 37 × 28 cm |
| Country of Origin | Mexico |
| Condition | New, genuine, factory packaging |
| Application | York centrifugal chillers (YK / YT / YS families) |
Specifications requiring confirmation before publication: supply voltage, control signal type, torque rating, and stroke time are not published consistently across sources. Request the current technical data sheet from Johnson Controls before adding these rows. Do not estimate them.
Why Buy the York 375-49340-103 from Cool.sa
- Genuine parts with documented sourcing: authorized supply channels for York, Trane, and Carrier, and All Chillar spare parts with compliant VAT invoicing.
- Free fitment verification before purchase: we check chiller serial, existing part number, and control platform against the York catalogue and confirm in writing. On a part at this value, this is the single most important thing we do for you.
- Supersession resolution: bring us any legacy number and we identify the current part.
- Formal quotations for tender and purchase order: VAT-registered, suitable for government and private procurement processes.
- Delivery across the Kingdom: Riyadh, Jeddah, Dammam, Makkah, Madinah, Khobar, Jubail, Yanbu, Abha, Tabuk.
- Critical spares programme: consignment and stocking arrangements for district cooling and healthcare plants where downtime is contractually penalized.
- Manufacturer warranty on genuine parts.
Frequently Asked Questions
Q1. What does PRV mean on this part?
PRV stands for Pre Rotation Vanes. These adjustable inlet guide vanes are positioned ahead of the centrifugal compressor impeller and control chiller capacity. In this application, PRV does not mean pressure relief valve, which is a common misidentification in some parts listings.
Q2. Is this a pneumatic or electric actuator?
It is an electric actuator. York’s catalogue identifies it as an actuator and wiring kit. Some third party listings incorrectly describe this component as pneumatic.
Q3. Does 375 49340 103 replace 025 29657 001 or 025 29657 002?
Yes. 375 49340 103 is the current direct replacement for both superseded part numbers, 025 29657 001 and 025 29657 002.
Q4. What is ACV 4007?
ACV 4007 is a cross reference designation for the same component. It appears in some third party listings and legacy documentation.
Q5. Does the kit include the wiring harness?
Yes. The product is supplied as a complete actuator and wiring kit, including the wiring harness. This is why it is designated as a kit rather than a bare actuator.
English 
العربية