Why do relief valves drip oil from the adjuster screw or nut?
Short Answer
If relief valves drip oil from the adjuster screw or nut, the cause is often not the setting alone. Buyers should suspect return-side pressure, damaged seals, contamination on the valve seat, or wear inside the relief assembly, especially when more than one valve leaks at the same time.
What To Check
- Check whether one valve leaks or several valves leak, because multiple leaking valves point more to system pressure or return restriction than one bad adjustment.
- Inspect tank return pressure, oil condition, and whether any recent seal or O-ring work disturbed the valve assembly.
- Confirm the exact relief-valve part number and machine model before ordering because similar valves can look alike but use different pressure ranges and sealing details.
Related JIAJUE Parts
Send the machine model, serial number, old part label, fault details, and clear photos before ordering so JIAJUE PARTS can help reduce wrong fitment.
Source Record
This question was selected from Google-visible forum result snippet results for the keyword 25-221556 relief valve problem. The answer is rewritten from JIAJUE parts-matching and sourcing practice, not copied from Google or any source page.
