Hydraulic Control Valve Repairs
Get speedy, reliable control valve repairs with CJ Plant. Explore our hydraulic valve block repair services with free inspection and diagnostics from our experts.
Experience with over 20+ brands
Expert Hydraulic Control Valve Repairs at CJ Plant
At CJ Plant, we specialise in hydraulic control valve block repairs, making sure your hydraulic system works as it should. Whether your unit is leaking and needs resealing, or you have a service affected due to a “sticky” spool, our expert team is here to help.
We start with a free strip-down and inspection, then provide you with a detailed report and a clear quote for the repairs needed. Our skilled engineers are committed to providing high-quality service and reliable solutions.
We take pride in our expertise and customer service, and we’re confident we can offer the support you need. Whatever the issue, we’re here to help get your control valve block back to good as new in no time. All our work also comes with a 12-month written warranty, for complete peace of mind.
Get in touch with CJ Plant today to book your free inspection and diagnostics.
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Types Of Control Valves We Repair
Our hydraulic repair experts have over 20 years’ experience in control valve repairs. We are able to carry out repairs on a wide range of control valves including:
- Directional control valves
- Proportional valves
- Servo valves
- Pressure control valves
- Flow control valves
- Excavator valve blocks
- Monoblock valves
- Sectional valves
If you’re having trouble with your hydraulic equipment, find out how the CJ Plant repairs team can help you get your equipment back up and running.
Common Hydraulic Control Valve Problems
Our experts have been carrying out control valve repairs for over 20 years and the most common problems we see are:
- Internal leakage
- External leakage
- Sticking spools
- Contamination damage
- Worn valve bores
- Corrosion
- Cracked valve bodies
- Solenoid failures
- Pressure loss
- Flow issues
If you’re experiencing leakages, damage from contamination or corrosion, issues with pressure or flow, your control valve is likely in need of some TLC. Don’t see your problem on the list, or not sure what is happening with your hydraulic equipment? Speak to our team to arrange your free strip down and inspection.
Control Valve Repairs For Leading Manufacturers
We have a wealth of experience in repairing many hydraulic components of leading manufacturer equipment including:
Our experts help keep excavators, telehandlers and other construction equipment on the go with reliable JCB repairs.
Caterpillar control valve repair
We support the repair of all Caterpillar machinery such as CAT excavators, dozers and material handling equipment.
Komatsu repair services for a wide range of Komatsu construction, demolition and earthmoving equipment.
Our hitachi control valve repairs are perfect for fixing heavy duty hydraulic equipment.
From quarrying to material handling, Liebherr produces a range of hydraulic equipment that we’ve seen on our repairs roster.
Heavy duty, hydraulic machinery from all of these manufacturers is used across a vast range of industries, giving us expert knowledge in a variety of sectors including:
Our Hydraulic Control Valve Repair Process
1. Cleaning & Preparation
- Clean the Valve Block: Thoroughly clean the exterior to prevent debris from entering internal components during disassembly.
- Label Components: Clearly mark the locations of solenoids, spools, caps and other critical components to ensure accurate reassembly.
2. Disassembly
- Remove Components: Carefully remove bolts, caps, spools, valves and seals, noting their orientation and position.
- Inspect for Damage: Check all components, including the valve body and spools, for wear, damage or corrosion. Ensure spools move freely.
3. Reassembly & Finalisation
- Clean Components: Thoroughly clean all parts to remove dirt, debris and contaminants.
- Replace or Reclaim Worn Parts: If spools are damaged, hone the valve bores, then grind/chrome/regrind the spools.
- Replace Seals: Install new O-rings or seals using an OEM or approved aftermarket seal kit.
- Reassemble Unit: Rebuild the valve block to OEM specifications, ensuring all components are correctly positioned.
All our work comes with a 12-month warranty
Why Choose CJ Plant For Control Valve Block Repairs?
With more than 20 years of experience, CJ Plant is one of the leading choices for control valve repair in the UK.
- Free inspection and diagnostics
- Experience with 20+ brands
- Over two decades of experience
- Expert engineers
- OEM or approved parts
What Our Clients Say
Request a Free Control Valve Repair Quote
Hydraulic Control Valve Repairs FAQs
What do control valves do and why is it an issue if it breaks down?
Control valves are among the most important components of any hydraulic system. They’re responsible for:
- Controlling flow rate: A control valve in a hydraulic system will govern the flow of hydraulic liquid through the system, adjusting the size of the port and increasing how quickly it flows.
- Pressure control: Energy transfer is managed by control valves, helping control the pressure in the system.
- The speed of all other parts: A hydraulic valve will increase or decrease the speed of all other parts, fundamentally affecting the function of the hydraulic system, speeding it up or slowing it down as required.
We have extensive experience with control valves in hydraulic systems, and we know how vital they are to the efficiency, safety and longevity of the entire system. We offer expert control valve repairs for a wide range of brands using OEM parts.
What are the common signs of a faulty control valve?
Common signs of faulty valves include slow or erratic movement of actuators, excessive noise or vibration in the system, leakage of fluid from the valve or the actuator, loss of pressure or flow in the circuit and overheating of the liquid or the components.
Control valves are a crucial component of any hydraulic system. Responsible for controlling the flow, pressure and direction of hydraulic fluids, they are essential to keep fluid at a set point in order to ensure optimal performance of the machine.
As a result, if there is a fault or failure with a control valve it can damage the operation of the system and present potential health hazards.
What are the different types of hydraulic control valves?
There are many different types of hydraulic control valves, configured to suit the requirements of each system. The size and complexity of the system will determine how many valves are needed, and which types of valves are required. Some common types that we repair include:
- Directional control valves
- Pressure control valves
- Flow control valves
- Proportional and servo valves
How much does it cost to repair hydraulic control valves?
Control valve repair costs can vary depending on the type of valve, the extent of the damage, how large the system is, which parts are needed and the labour involved. For example, a simple reseal will be on the cheaper end, while more complex repairs including repairing damaged spools are more expensive. With CJ Plant, you can get a free, transparent inspection, diagnosis and quote to find out exactly how much your control valve repair will cost.
Why do hydraulic control valves fail?
Control valves can fail due to several factors, commonly due to wear and tear. Other reasons can include:
- Contamination of the hydraulic fluid
- Improper installation and maintenance
- Excessive pressure or flow
- Internal corrosion
- Overheating
- Mechanical failure of internal parts
Can you repair an obsolete control valve?
Yes, obsolete units can be repaired, as we have the facilities to have obsolete, damaged, or worn parts reclaimed or manufactured. We offer hydraulic control valve repairs for a huge range of brands, and we are always happy to take on unique units. We’ll begin with a diagnosis and inspection, before providing you with our report and quotation.
What components are usually replaced in a control valve repair?
As standard, we’ll replace any seals and service parts during your control valve repair, as well as any components that are worn or damaged. Each repair will be different depending on the issues we identify during the initial inspection.
Can contamination in hydraulic fluid damage control valves?
Yes. If contaminants in your hydraulic fluid reach the inside of your control valve, they can damage seals, wear surfaces and block passages. It’s important to make sure your hydraulic fluid is kept clean and free from contamination.
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