PRV Calibration



EIWAA Marine Services provides PRV Testing, Pressure Relief Valve Testing and PRV Calibration Services in Saudi Arabia. Whether in offshore or in onshore, periodic testing and adjustment of pressure relief valves is crucial to maintaining overall safety. When performing PRV onsite Calibration Services, bench testing in a controlled environment is the most popular method. The disassembly, inspection, repair or replacement of the PRV are usually accompanied by these tests. Our pressure relief valve (PRV) testing and calibration services in Saudi Arabia, always in conformance with international codes and manufacturer-recommended procedures.
One of the critical safety components on an offshore rig is the Pressure Safety Valve (PSV), which is designed to release excess pressure and prevent potential hazards such as equipment failure or explosions. Before conducting PSV calibration at an offshore rig in marine calibration services, proper planning and coordination are essential. During our Onsite calibration Services, the PSV is carefully inspected for any visible damage or defects that may affect its performance. It is then disconnected from the system and connected to calibration equipment to test its functionality. Any adjustments needed to bring the PSV back into calibration are made, and the results are documented for record-keeping purposes.


Safety valve calibration is done by EIWAA Oil and Gas Services both onsite and offsite approved by Major Ports of Saudi Arabia with IACS Classification approvals. This comprises PRV (Pressure Relief Valves), PVV (Pressure Vacuum Valves) and PSV (Pressure Safety Valve) which are standard safety valves, diaphragm safety valves, bellows safety valves, and controlled safety valves etc. While each industry has its own set of specifications for testing pressure relief valves, it is recommended for all facilities to conduct routine, thorough testing that includes both an operational test and confirmation of the valve’s nameplate set pressure. Determining when a pressure relief valve requires maintenance is a crucial part of the PRV testing process. When doing an in-line valve test, a valve technician can replace or fix defective valves onsite.

Pressure Relief Valve Calibration

PRV Calibration by onsite calibration services at offshore rigs and vessels by a Qualified Calibration Engineer

Pressure Gauge Calibration

Pressure gauge calibration Services, Pressure indicator calibration, Manometer calibration &Pressure transmitter calibration

Offshore Rigs and Vessels

Gas Detector Calibration, Welding Machine Calibration, Tension meter calibration and Torque wrenches calibration services

Safety Valve Calibration

PVV (Pressure Vacuum Valves) and PSV (Pressure Safety Valve) diaphragm safety valves, bellows safety valve Calibration

Our highly skilled calibration technicians and engineers calibrate pressure instruments using premium master calibrators and reference standards. Our teams of technicians can do testing and calibration of PRV and Gauges at your location; alternatively, we can test the relevant products in our closest facility located on land. Pressure gauge calibration Services, Pressure indicator calibration, Manometer calibration, Vacuum gauge calibration, Pressure Testing and Pressure transmitter calibration are the major pressure calibration services in Saudi Arabia that we offer. Along with Onsite calibration Services of PRV calibration Services, technicians are qualified to perform Gas Detector Calibration, Welding Machine Calibration, Tension meter calibration and Torque wrench calibration services etc.


PRV calibration or Pressure Relief Valve calibration services is the inspection, testing, adjusting, maintenance and overhauling of a pressure relief valve to ensure it works properly and accurately. A pressure relief valve is a critical safety device in oil and gas, marine and offshore rigs to act cut off properly to prevent overpressure of a tank, pipe, or vessel.

  • ASME Boiler and Pressure Vessel Code (BPVC) – Section VIII, Division 1: PRV Calibration and PRV testing of Pressure Vessels,Piping and pressure-containing parts 
  • ASME PCC-2: PRV Calibration and PRV testing of Boiler and Pressure Vessel Code – Power Boilers
  • ASME PTC-25: PRV Calibration and PRV testing of Boiling Water Nuclear Power Plants
  • OSHA Standard 29 CFR 1910.109: PRV Calibration and PRV testing of Pressure Vessels
  • OSHA Standard 29 CFR 1910.119: Process Safety Management of Hazardous Chemicals parts PRV Calibration and testing.
  • API Standard 526: Flanged Steel Pressure-Relieving Devices and PRV Calibration services
  • API Standard 2000: PRV Calibration and PRV testing for Venting Atmospheric and Low-Pressure Storage Tanks
  • ISO 4126: Safety devices for boilers – PRV Calibration and PRV testing  of Relief valves
  • ISO 2604: Pressure-relief devices – Functional requirements and PRV Calibration and PRV testing
  • ANSI/ASME PVHO-1: PRV Calibration and PRV testing Safety Standard for Relief Devices for Protecting Against Excessive Pressure 
  • ANSI B16.34: PRV Calibration and PRV testing Valves-Forged Steel
  • Directive 94/9/EC: Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres for PRV Calibration and PRV Testing

Safety valve calibration services also known as relief valve calibration or pressure relief valve calibration, are properly set and functioning correctly to prevent excess pressure by proper cut-off function. It ensures the safe operation of pressure-containing equipment, pressure vessels, and systems. Safety valve calibration services are a series of calibration, testing and overhauling including Visual inspection, Function testing, Pressure and Flow testing and Leak testing etc.

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