How Valve Quality Is Ensured – What Happens During Testing?

The role of a valve is simple but critical: it must operate reliably and safely even in the most demanding conditions. Quality does not happen by chance, it is the result of carefully designed processes and rigorous testing. In this article, we open up what quality assurance and testing of valves actually mean in practice.

Quality Starts with the Material

The durability and safety of a valve depend on high-quality materials. For every material used in a valve, a material certificate must be available, often delivered automatically by the supplier or upon request. The certificate indicates, for example, the country of origin and the factory, ensuring full traceability. This traceability is a key part of international quality and responsibility requirements.

In addition, material suppliers perform material tests to verify that the material meets the requirements. This ensures that each valve is manufactured from exactly the right grade of material.

ISO 9001: The Backbone of Quality Work

Maper’s production follows the ISO 9001 standard, a globally recognized framework for quality management. The standard ensures that quality is not only about the final inspection but is built into every step of the process. From design to installation, each stage plays a role in quality assurance.

The Pressure Test – The Final Proof

Even if the design and materials are correct, no valve leaves Maper without a practical test. This means a pressure test, where the valve is subjected to a pressure far above its normal operating level. The valve is over-pressurized and carefully monitored to ensure there are no leaks.

Special attention is paid to connections and seals, which must withstand the pressure without failure. Only when the valve has proven its tightness and strength is it approved for delivery.

Why Quality Assurance Matters

Valves are often critical components in processes that involve hazardous substances or high pressures. Quality assurance and testing guarantee that the valve performs exactly as required: safely, reliably, and for a long time.

For Maper, this is not just a formality but a promise to our customers: every valve is tested and proven to be durable.

Looking for a valve solution that you can trust in every situation? Get in touch with our team, and we’ll help you find the right valve that meets your needs and exceeds expectations.

19.9.2025