Denison Valve Repair & Sales
Since 1975
Independent service for Denison Hydraulics servo valves, proportional valves, and electronic control cards. Nearly five decades of expertise restoring Parker Denison systems.
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Units in Stock
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Denison Servo Valve Repair & Sales
NC Servo Technology has serviced Denison Hydraulics valves and control cards for nearly 50 years. As an independent repair provider, we offer faster turnaround than manufacturer service while restoring your Denison components to manufacturer specifications.
We diagnose, rebuild, and test Denison servo valves, proportional valves, directional control valves, and electronic control cards across all series. From legacy 4D models to current Parker Denison systems, our technicians service discontinued components that OEMs no longer support.
Denison Hydraulic Services
Repair, sales, and testing for Denison servo valves, proportional valves, and electronic control systems.
Denison Servo Valve Repair & Sales
Rebuild services and refurbished units for Denison servo valves including electrohydraulic control valves across all series. Torque motor replacement, spool restoration, and comprehensive flow testing. Stock available from our 19,000+ unit inventory.
Denison Proportional Valve Repair & Sales
Service for Denison proportional directional control valves and flow control valves. Coil replacement, spool reconditioning, electronic driver repair, and full functional testing. Refurbished valves ready for shipment.
Denison Electronic Control Repair & Sales
Repair and sales for Denison electronic control cards and electro-hydraulic system controllers. Circuit diagnostics, component-level repair, and testing to restore control functionality. One-year warranty on all repairs.
Parker Denison Systems
Service for current Parker Denison products and legacy Denison Hydraulics components manufactured before the 2003 Parker acquisition. Cross-reference capabilities for discontinued part numbers and updated equivalents.
Why Choose NC Servo for Denison Repair?
As an independent service provider, we deliver advantages that manufacturer service centers can't match.
Faster Turnaround
Our repair turnaround is typically faster than sending components to Parker for service. We prioritize your hydraulic systems and offer rush services when downtime matters to your operations.
Large Inventory
With over 19,000 valves and control modules in stock, we maintain one of the industry's largest inventories. Refurbished Denison units available for purchase when you need immediate replacements.
Testing Infrastructure
Thirteen hydraulic test stands verify valve performance, flow rates, pressure response, and control accuracy. Electronic control cards tested with proper load simulation and signal verification.
Legacy System Support
We service Denison Hydraulics components manufactured before the 2003 Parker acquisition—including discontinued models that Parker no longer supports. Parts sourcing and cross-reference expertise for obsolete systems.
Testing Protocol
Every Denison valve tested on hydraulic test stands. Electronic controls undergo bench testing and signal verification.
Our testing infrastructure includes 13 hydraulic test stands for servo and proportional valves. We verify flow rates, pressure response, and null position accuracy to manufacturer specifications. Denison electronic control cards are tested under load conditions with proper power and signal verification.
Each repaired unit is tested to ensure it meets manufacturer specifications. Test documentation and performance data available at additional cost.
Denison Repair FAQs
Answers to frequently asked questions about our Denison repair services.
What is the typical turnaround time for Denison valve repair?
Standard repair turnaround is typically faster than manufacturer service. Exact timing depends on component availability and repair complexity. Rush services are available when downtime matters to your operations. Contact us with your specific model for current turnaround estimates.
Do you service both Denison Hydraulics and Parker Denison products?
Yes, we service both legacy Denison Hydraulics components manufactured before Parker's 2003 acquisition and current Parker Denison products. Our parts inventory and technical documentation support discontinued models that Parker no longer services.
What warranty do you provide on repaired Denison valves and control cards?
All repaired Denison valves and electronic control cards include a one-year warranty covering parts and workmanship. This warranty ensures confidence in the quality and reliability of our repair services.
How do I get a quote for Denison valve or control card repair?
Contact us with your component model number, serial number, and description of any issues or failure symptoms. We provide accurate pricing after receiving the unit for diagnostics. Use the quote form below or call us directly.
What if you don't have my specific Denison valve in stock?
While we maintain an inventory of over 19,000 valves, if we don't have your specific Denison model in stock, we can act as a broker to source the valve you need. Our industry relationships allow us to locate hard-to-find and discontinued Denison valves from trusted suppliers worldwide.
Do you offer exchange programs for Denison valves?
Exchange programs are available on select Denison models. Availability depends on having your specific model in stock, the condition of your trade-in valve, and whether the model qualifies for our exchange program. Contact us to check if your valve is eligible for exchange.
Can you cross-reference discontinued Denison part numbers?
Yes, we maintain cross-reference documentation for discontinued Denison Hydraulics part numbers and their current Parker Denison equivalents. We can identify suitable replacements or source original components from our inventory and supplier network.
Ready to Restore Your Denison Systems?
Repair service backed by nearly 50 years of hydraulic expertise.
Get Your QuoteDenison Products We Service
52 models available
DENISON A3B0335
Industrial DENISON A3B0335 valve repair specialists. Quality service with fast turnaround and comprehensive testing capabilities.
DENISON R4B105953211W01A1
A broken DENISON R4B105953211W01A1 valve can disrupt your entire system. We provide fast, reliable repairs...
DENISON R4VP10-535-12-103-A1
Looking for a reliable fix for your broken DENISON R4VP10-535-12-103-A1? NC Servo Tech is your...
DENISON S26206200
A broken DENISON S26206200 valve can disrupt your entire system. We provide fast, reliable repairs...
DENISON S26348130
A broken DENISON S26348130 valve can disrupt your entire system. We provide fast, reliable repairs...
DENISON SE03-36847
A broken DENISON SE03-36847 valve can disrupt your entire system. We provide fast, reliable repairs...
DENISON VM5M-3F-G-10-C
When your DENISON VM5M-3F-G-10-C valve fails, production stops. NC Servo Tech offers expert repair services...
DENISON VV0132106C1
Downtime from a faulty DENISON VV0132106C1 costs you money. We provide rapid repair services and...
DENISON 701-00054-8
Get your DENISON 701-00054-8 back in service faster. We specialize in the repair and sale...
DENISON R4R0659511B1
Full-service DENISON R4R0659511B1 valve repairs backed by experienced technicians and warranty coverage.
DENISON 0010263-004
Expert DENISON 0010263-004 valve repair and restoration services. Professional solutions for industrial valve requirements with...
DENISON 09913142-0
Need a DENISON 09913142-0 valve fixed? We specialize in repairing and testing these units.
All Denison Products
- DENISON A3B0335 - Model: DENISON-A3B0335
- DENISON R4B105953211W01A1 - Model: DENISON-R4B105953211W01A1
- DENISON R4VP10-535-12-103-A1 - Model: DENISON-R4VP10-535-12-103-A1
- DENISON S26206200 - Model: DENISON-S26206200
- DENISON S26348130 - Model: DENISON-S26348130
- DENISON SE03-36847 - Model: DENISON-SE03-36847
- DENISON VM5M-3F-G-10-C - Model: DENISON-VM5M-3F-G-10-C
- DENISON VV0132106C1 - Model: DENISON-VV0132106C1
- DENISON 701-00054-8 - Model: DENISON 701-00054-8
- DENISON R4R0659511B1 - Model: DENISON--R4R0659511B1
- DENISON 0010263-004 - Model: DENISON-0010263-004
- DENISON 09913142-0 - Model: DENISON-09913142-0
- DENISON 22130 - Model: DENISON-22130
- DENISON R1EP01235103A1 - Model: DENISON-R1EP01235103A1
- DENISON C475301104 - Model: DENISON-C475301104
- DENISON D1P034543301341 - Model: DENISON-D1P034543301341
- DENISON D4S069A514411 - Model: DENISON-D4S069A514411
- DENISON NO ID TAG - Model: DENISON-NO-ID-TAG
- DENISON R1EP01235103A1S262358200025291 - Model: DENISON-R1EP01235103A1S262358200025291
- DENISON R4V10-595-32-09-W01-A1 - Model: DENISON-R4V10-595-32-09-W01-A1
- DENISON R5P0852316P2G0RA1 - Model: DENISON-R5P0852316P2G0RA1
- DENISON S26226240 - Model: DENISON-S26226240
- DENISON S26348320 - Model: DENISON-S26348320
- DENISON T6C0053R001B1N0P - Model: DENISON-T6C0053R001B1N0P
- DENISON VP01300QA1 - Model: DENISON-VP01300QA1
- DENISON VV01321WE1 - Model: DENISON-VV01321WE1
- DENISON SE0.3-21042 - Model: DENISON-SE0.3-21042
- DENISON 096-210420 - Model: DENISON-096-210420
- DENISON 1680350 - Model: DENISON-1680350
- DENISON 4DP01LE43F2003B1G24C1 - Model: DENISON-4DP01LE43F2003B1G24C1
- DENISON A3D03-33-B91-03 - Model: DENISON-A3D03-33-B91-03
- DENISON D1P0133431211011A5 - Model: DENISON-D1P0133431211011A5
- DENISON D4S063163B409E06B5 - Model: DENISON-D4S063163B409E06B5
- DENISON D4S069A51441106B1028 - Model: DENISON-D4S069A51441106B1028
- DENISON R1EP01-235-103 - Model: DENISON-R1EP01-235-103
- DENISON R4B105953209W01A1 - Model: DENISON-R4B105953209W01A1
- DENISON R4V9105351210 - Model: DENISON-R4V9105351210
- DENISON S26-36789-0 - Model: DENISON-S26-36789-0
- DENISON S26226240025291 - Model: DENISON-S26226240025291
- DENISON R4V10-595-32-11-W01-A1 - Model: DENISON--R4V10-595-32-11-W01-A1
- DENISON VED03M-3AC-26-G-OB-24L-B - Model: DENISON-VED03M-3AC-26-G-OB-24L-B
- DENISON VP0134B1S26583490 - Model: DENISON-VP0134B1S26583490
- DENISON ZDR-P-01 - Model: DENISON-ZDR-P-01
- DENISON D4S10-912-144-11-0Q-B1 - Model: DENISON--D4S10-912-144-11-0Q-B1
- DENISON VV01311WE1 - Model: DENISON--VV01311WE1
- DENISON 0991-31420 - Model: DENISON-0991-31420
- DENISON 22128 - Model: DENISON-22128
- DENISON 4DP01T1205D25A2G12 - Model: DENISON-4DP01T1205D25A2G12
- DENISON A4D0133208302001A154327 - Model: DENISON-A4D0133208302001A154327
- DENISON D1P0133934611011 - Model: DENISON-D1P0133934611011
- DENISON D4S063BV3B409W01B1 - Model: DENISON-D4S063BV3B409W01B1
- DENISON D4S10-912-144-11-0Q-B1 - Model: DENISON-D4S10-912-144-11-0Q-B1
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