Title: Check Valve (Hydraulics) - Troubleshooting
Course: Troubleshooting Labs > Section: Sample Troubleshooting Component Pages

Check fittings are attached correctly; confirm valve is hooked up the intended way.

About the Check Valve

- Purpose of the Check Valve: Allows flow to go in only one direction.
- How it works: Flow moving toward the ball (the catch), it'll catch. Flow moving away from the ball (around it), flow will continue.
  - Because of this, it is critical that the check valve is hooked up correctly (in the intended direction).
- When it's used: When flow is needed only in one direction. Example: Pumps.

Common Component Failure Problems

- System is not working as expected.
  - Is the valve hooked up correctly? Are there any leaks?
    - Is the valve hooked up backwards?
    - Are hoses hooked up to the correct ports and connected to the correct components?
    - Are the hoses attached correctly?
      - If not, reattach.
    - Is there any scarring or damage on the fittings?
      - If so, replace.
  - Check pressure.
    - Is valve getting proper pressure?
    - If not, problem is likely upstream.
  - Check flow.
    - Is the flow high enough for the valve to function properly?
    - If not, problem is possibly upstream.

Troubleshooting Instrumentation/Tools

- How to troubleshoot a hydraulic system
- Using a pressure gauge to troubleshoot a hydraulic system
- Using a flow meter to troubleshoot a hydraulic system

Troubleshooting Step-by-Step Example

Additional Troubleshooting Information

Related Parts:

- Needle Valve
- Flow Control Valve
- Pressure Compensated Needle Valve
- Pressure Reducing Valve
- Sequence Valve

Schematic:

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