Ventil PreVenTest

Portable computer operated online safety valve test unit to test installed spring-loaded, proportional and full lift safety (relief) valves. The system allows testing of safety valve without taking the valve from the installation.

Working method, how does it work?
Here is the basic principle..: A force is applied to the valve spindle to overcome the spring tension of the valve. This is achieved by using a hydraulic power pack linked to an electronic force transducer. A computer is then used to measure the force applied. By combining this data with the information about the valve seat and line pressure of the valve it is possible to access the set pressure.

Advantages!
• Accurate online diagnose.
• Only valves that require an overhaul need to be removed from plant.
• Welded in valves can be adjusted without costly removal from the line.
• No need for temperature correction.
• No interruption to plant production during testing.
• Reduced time needed to commission plant after shutdown.

Measurements
From the information recorded and displayed by the easy operated program, the following information can be obtained;
• The set pressure of the valve.
• The re-seat pressure (indication only).
• The spring adjustment of the valve.
• The valve displacement.

Available options
• Ventil PreVenTest, can be optionally completed with a unique vibration signaling system that provides an clear lifting point of safety valves in liquid service and proportion safety valve with small seats.
• ATEX (Explosion proof) version.