ASCO Hydramotor Parts and Services

One-stop shop for extensive inventory available 24/7 and technical support 


Reliable Hydramotors are critical for valve and damper control in nuclear power plants. Plant operators need a reliable supply of equipment, service and parts. 


Framatome continues its long-standing relationship with Automatic Switch Company (ASCO), including the supply of nuclear-grade NH90 series and commercial grade AH90 series ASCO Hydramotor® actuators and actuator parts kits. These Hydramotors have demonstrated field-proven performance for valve and damper control in nuclear power plants.

Our arrangement with ASCO makes Framatome the exclusive nuclear stocking distributor of parts kits. Plus, we are the only authorized ASCO Service Center for overhauling and repairing the NH90 and AH90 series actuators for the nuclear industry. In addition, we provide comprehensive technical product support in accordance with OEM specifications, including application engineering, parts stocking, rebuilding, and training. 

Application Engineering for Specific Customer Needs

For new projects, Framatome works with ASCO in providing application engineering to your requirements. Our engineering teams can select an actuator configuration that will ensure proper operation and installation for your specific need. 

Round-the-Clock Parts Availability

Framatome’s Nuclear Parts Center (NPC) stocks nuclear grade parts kits for all NH series actuators. In fact, we provide consistent rapid turnaround for emergency parts and repairs, and offer highly responsive 24/7 parts availability via our dedicated NPC Customer Inquiry System. 
ASCO Hydromotor - Service

Our comprehensive technical product support includes custom actuator configuration for your specific application.

Customer benefits

  • An extensive inventory enhances efficiency, enabling rapid turnaround during scheduled repairs and emergencies
  • Comprehensive one-stop technical support ensures consistent safe performance
  • Customized training programs are tailored to meet your specific plant needs
  • The only test facility that can certify refurbished units to the original nuclear qualification, simplifying your acceptance of refurbished units

Refurbishment to Originally-Qualified Condition

Our cost-effective refurbishment services include a full warranty on parts and services. We also restore Hydramotor units to a fully-qualified condition — enabling customers to increase efficiency by freeing valuable resources for other work. Our refurbishment facilities, combined with our spare parts supply, eliminate the hassle and worry associated with last minute emergencies. In addition, NUPIC member utilities audit and approve our 10CFR50 Appendix B QA Program.

Fully Certified Training

Detailed training in actuator overhaul/maintenance practices is available upon request.

Nuclear- Grade Part Kits for all NH series actuators - Services

Our Nuclear Parts Center stocks nuclear-grade part kits for all NH series actuators.



Your performance
is our everyday commitment

The Experience of a Leader

As the world’s premier supplier of nuclear services, Framatome promotes total customer satisfaction to help provide safe, clean and economical nuclear energy. We combine innovative technology with a tireless commitment to responsiveness and reliable performance — all to help customers succeed. For more information on our Framatome / ASCO Hydramotor sales and service, contact us today.

ASCO NH90 and AH90 series actuators - Services

Framatome is the only authorized ASCO Service Center for overhauling and repairing the NH90 and AH90 series actuators for the nuclear industry.