Safety Relief Valve Test

The frequency of mandatory safety and relief valve bench testing is subject to local jurisdiction but should never normally be more than five years. The actual time between test depends on the operation conditions and the valve reliability. Much consideration must be given to valves that are subject to exposure to entrained deposits in the stream that may lead to seizure of the relief valve spindle.

The conventional methods of carrying out safety and relief valve pressure checks are time consuming and costly. They often require over-pressurisation of the system.

For these reasons most maintenance engineers prefer to carry out safety and relief valve tests on the bench in a workshop.

The Stork Cooperheat calibration system eliminates the need for these costly procedures by lifting the valve spindle using hydraulic pressure to ensure a totally controlled lift. The set pressure of the valve is checked by a computer programme and the valve can be adjusted and retested to ensure the set pressure is correct.