“THE IN-SITU TESTING SOLUTION FOR RE-CERTIFICATION OF PRESSURE RELIEF VALVES"
The PREVENTEST NEXUS is an Auxiliary Lift Assist Device (ALAD), developed to make in-situ testing of spring-operated Pressure Relief Valves (PRVs) simpler, smarter and more efficient. It allows testing of virtually any type and size of PRV under normal operating conditions – whether the medium is steam, gas or liquid.
Following ASME’s Performance Test Code (PTC) 25, this method provides a safe and reliable alternative to traditional bench testing. The big advantage: PRVs can be functionally tested without removal, as long as the procedure is done correctly and with the right equipment. ASME Section XIII supports this methode by defining the requirements for safe and compliant in-situ testing of PRVs.
The PREVENTEST NEXUS re-shapes Pressure Relief Valve re-certification:
No plant shutdown needed. Significant cost savings. Targeted maintenance. Accessible for hard-to-reach valves. Testing under real process conditions. Faster on-site turnaround. Compliance and documentation support.
Designed with the operator in mind
At its core, the PREVENTEST NEXUS is powered by a robust software and database system preloaded with over 4,000 seat sizes from the world’s leading Pressure Relief and Safety Valve manufacturers.
Ergonomic & lightweight: Built to reduce operator fatigue during intensive field work and testing procedures.
Ready for the toughest conditions: Fully off-grid capable, perfect for remote or hazardous environments.
Effortlessly intuitive: A user-friendly interface that requires minimal training, so your team can get started faster.
Truly global: The software supports multiple languages, enabling smooth operation for international teams.
Built for safety: ATEX application pending, enabling use in explosive or volatile zones.
Training on your terms: Expert instruction available on-site, in your workshop, or remotely – wherever you need it.
Quick reference guide: Essential instructions in a clear format, enabling users to find key information instantly, reduce setup time and minimize operational errors
Every detail of the PREVENTEST NEXUS is built to empower the operators who use it, wherever the job takes them.
Ahead of what's next
Ready to use straight out of the box, this compact and powerful device enables accurate in-situ testing of Pressure Relief Valves, no removal required. Supplied with a full set of accessories, it’s your complete field solution for fast, reliable PRV diagnostics.
The set pressure is determined using a lift sensor and an acoustic sensor.
A set of load sensors (1, 10, 20, 50 kN) covers the full measurement range and ensure high accuracy.
A double-acting hydraulic unit for controlled push–pull motion.
Automatic determination of set pressure based on sensor data.
Bespoke software, a comprehensive valve database and cloud back-up, delivers unmatched precision, reliability and ease of use.
Pre-test crack test data contribute to the overall Pressure Relief Valve assessment.
Test results are fully reproducible, tamper-proof, and automatically validated, with measurement findings available as digital and printed certificates.
With 700+ PREVENTEST units installed and 25 years of proven success in field use, training and sensor calibration.
READY TO USE - CLICK HERE
COMPLETE SET:
Mounting bracket.
Set of UNF/UNC spindle nuts.
Complete set of load sensors: 1,10,20 kN (*)
Lift- and acoustic sensor.
Hydraulic unit including connection hose.
Rugged laptop including PREVENTEST software.
Industrial wireless communication unit.
Quick Reference Guide.
(*) Optional: load sensor 50kN
Test smarter, stay compliant
Re-certification of Pressure Relief Valves is mandatory. In-situ testing can support your risk-based assessments and complement traditional bench testing. That’s why Ventil offers alternative test solutions for PRVs, tailored to your specific needs.
Our experts help you choose the most efficient, compliant, and future-proof testing strategy. We ensure full alignment with industry standards, while prioritizing safety, flexibility, and operational continuity.
Experiences from the front lines
“Investing in the PREVENTEST NEXUS has significantly improved our testing operations.
After evaluating multiple solutions, the PREVENTEST NEXUS clearly stands out. Its advanced software, preloaded with over 4,000 seat sizes, ensures unmatched accuracy and consistency across all valve types. Real-time, high-precision force and acoustic data from the smart sensor box allow us to operate efficiently, even in challenging field conditions.
Easy to set up and requiring minimal training, the NEXUS has proven to be the most reliable and efficient investment for our in-situ Pressure Relief Valve testing needs.”
Rudolf Schneider
Maintenance Supervisor, Petrochemical Plant
VENTIL TEST EQUIPMENT BV
Polakweg 6, 2288 GE Rijswijk, The Netherlands
+ 31 (0)88 113 0900, info@ventil.nl
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