ENSURE COMPLIANCE AND OPTIMAL PERFORMANCE
Marine valves, such as pressure vacuum valves (PV valves) and high-velocity valves, are subject to strict testing regulations as their functionality is critical to the safety and environmental performance of an oil or chemical cargo vessel.
Both PV valves and high velocity valves need be thoroughly tested at each dry-dock visit, but this is often insufficient. Several national and international regulations demand more frequent testing, and often ship operators have their own stricter guidelines. As Industry standards evolve, so do requirements from authorities and charters along with a public expectation for professional handling of environmental concerns.
Stay ahead of these continuously changing demands with our versatile equipment for pressure relief valve testing, and high-velocity valve testing. When time and circumstances allow for intensive testing – for instance during a dry-dock visit – we recommend our Workshop Test Benches. But if that is not possible, we have you covered with our portable test kit enabling you to test your valves on the vessel at any time.
PORTABLE TEST KIT
Our specially developed portable test equipment can help you stay compliant and safe by enabling you to conduct on-site tests.
This easy-to-use kit, often called PV valve test kit in the field, can be used on any vessel for any size valve, be it high-velocity or PV valve.
It enables you to conduct efficient on-site testing, ensuring that the valves on your cargo vessel are always ready for inspection. Regular testing using this pressure relief valve testing kit also helps improve crew awareness about valve performance, reducing reliance on manual venting or other procedures that can be costly.
Key benefits:
- Readily available on tankers and cargo vessels
- Enhances crew’s capabilities, understanding, and handling of PV valves and test equipment.
- Allows quick preparation and efficient on-site testing to meet authority requirements for immediate correction, if required.
- Increases the vessel’s overall safety level.
- Meets or exceeds ISGOTT and IBC Code requirements.
- Provides up-to-date test data for vetting, avoiding the need for rushed actions.
- Reduces expenses on dry-dockings and intermediate services.
WORKSHOP TEST BENCH
Our workshop test bench is a specialized pressure testing rig designed for establishing and adjusting set pressures on high-velocity valves and PV valves. Using this equipment, you can adjust pressure settings and establish leakage rates to ensure that the valves operate efficiently and safely.
How to adjust set pressure on high-velocity valves and PV valves?
To adjust pressure setting on HI Jet ISO II valves:
- Adjust the pressure regulator to 2 bar.
- Adjust the flow regulator to allow approximately 12-15 seconds for the pressure to rise from zero to a constant reading, stabilising the pressure setting.
- Release pressure inside the valve by activating valve check-lift.
- Repeat the pressure release process four times, turning the valve disc manually to different positions each time the check-lift is operated.
- Close the shut-off valve.
- Adjust the setting to desired pressure by turning magnet clockwise or anticlockwise. See the maintenance manual details regarding the specific valve.
- Open the shut-off valve and check the new setting. Repeat the adjustments, if necessary. If the required setting is achieved, lock the magnet in place using the locking plate and locking nut.
How to establish leakage rate?
- Build up pressure to 80% of setting by following the procedure for setting test i.e. app.15 seconds from zero pressure to 80% of setting.
- At 80% pressure, close all ball valves and air supply to have a completely closed container.
- Observe pressure for 60 seconds, and record the difference in pressure reading in the gas constant equation/ excel template for establishing leakage in l/min.