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Key Questions:

Product Selection Differences for Pilot Operated Safety Valves

When selecting Pilot Operated Safety Valves (POSV), there are several key differences to consider among the available options:

  1. Operating Principle: POSVs operate using a pilot system that detects excess pressure in the system and opens the main valve to relieve the pressure. Different POSVs may use different types of pilot systems, such as direct-acting, indirect-acting, or balanced bellows.

  2. Set Pressure Range: Different POSVs have different set pressure ranges, which determine the pressure at which the valve opens to release excess pressure.

  3. Flow Capacity: The flow capacity of a POSV is crucial to ensure that it can handle the maximum flow rate during an overpressure event. Different POSVs have varying flow capacities based on their design and specifications.

  4. Materials of Construction: The materials used in the construction of a POSV are essential for compatibility with the process fluid and operating conditions. Consider factors such as temperature, pressure, and the nature of the fluid when selecting the appropriate materials.

  5. Certifications and Standards: Ensure that the POSV meets relevant industry standards and certifications to ensure its reliability and performance under different operating conditions.

  6. Maintenance Requirements: Consider the maintenance requirements of the POSV, such as inspection intervals, spare parts availability, and serviceability to ensure its long-term reliability and performance.

  7. Size and Installation: The size of the POSV should match the piping system it is installed in to ensure efficient operation. Consider factors such as inlet and outlet sizes, orientation, and space constraints during selection.

  8. Vendor Reputation: Consider the reputation of the manufacturer or vendor of the POSV in terms of quality, reliability, and after-sales support.

By considering these key differences among available options, you can select the most suitable Pilot Operated Safety Valve for your specific application and requirements.