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Valve Testing, Servicing & Recertification

Valve Testing, Servicing & Re-CertificationValve Testing, Servicing & Recertification – WNR Oilfield Services provide PRV in-situ testing includes Hydraulics Assisted Lifting, Pop-Test, Live-Float, servicing and overhauling according API and ASME Standard. Our capability not restricted to onshore testing and servicing but expand to offshore to provide mobile service and able to serve clients worldwide.

Valve Testing, Servicing & Recertification

Our Service Includes:

  • Pressure Relief Valve Setting and Testing; Overhaul, Hydro-Setting and Live Testing
  • Pressure Relief Valve Inspection/ Recertification for Marine and Offshore Industries; On-site Pop-Test, Inspection, Calibration Overhaul.
  • Specialist Support for Plant Commissioning and Startup
  • Hydraulics Assist Valve Testing / Trevi-Test / Electronics Valve Test (EVT) / Teson Valve Testing
  • Control Valve Troubleshooting, Testing and Calibration
  • Manual Valve Recondition and Testing
  • Spare parts Supply and Assistance for Valves.

Valve Testing Procedure

Set Up Procedures

  1. Place a pressure gauge upstream of the relief valve and appliance.
  2. Pre-set the relief valve to 100 PSI.
  3. Close all outlets of the appliance.
  4. Fill the appliance with water using pressure less than 100 PSI.
  5. Bleed of air.

Low Pressure Valve Testing

  1. Using the upstream gauge as a reference, increase the pressure on the appliance to 100 PSI.
  2. Examine the pressure relief valve for evidence of liquid discharge.
  3. If the valve opens and liquid is discharged you have passed the low pressure testing phase of this procedure.
  4. If the valve does not open, increase the pressure to 110 PSI, repeat Steps 2 and 3, if the valve does not open, increase the pressure to 120 PSI, repeat steps 2 and 3.
  5. If the pressure does not release, the pressure relief valve has failed low pressure testing, proceed to Step 1 (High Pressure Vales Testing).
  6. If pressure relief occurs within the range above, proceed to Step 1 (High Pressure Vales Testing).

High Pressure Valves Testing

  1. Follow the Set Up procedures in Steps 1 through 5 again. However, in steps two and four, use 200 PSI as your settings.
  2. Increase pressure on the appliance to 200 PSI.
  3. Examine the relief valve for evidence of liquid discharge.
  4. If the valve opens and liquid is discharged, you have passed the high pressure testing phase of this procedure.
  5. If the valve does not open, increase the pressure to 210 PSI repeat steps 3 and 4, If the valve does not open, increase the pressure to 220 PSI, repeat steps 3 and 4.
  6. If the pressure still does not release, the pressure relief valve has failed high pressure testing and should be replaced.
  7. If pressure release occurs within the 200 to 220 PSI range, the pressure relief valve has passed high pressure testing.
  • If your pressure relief valve passes both phases of this procedure the valve has passed testing. Repeat this test at six month intervals.
  • If it fails the low pressure phase, but passes the high pressure phase, repeat low pressure testing. If it passes low pressure testing on the second try, the pressure relief valve has passed testing. If it fails low pressure testing on the second try, immediately replace the pressure relief valve.
  • We do not recommend repair. We recommend complete replacement of the pressure relief valve.
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