API Plan 71
API Plan 71 is a seal gas supply system designed for single dry-running gas seals.
It provides a clean, dry, and regulated external gas (typically nitrogen or instrument air) to the seal chamber, ensuring proper operation and preventing contamination from the process fluid or environment.
API Plan 71 is a simple, efficient, and low-maintenance seal support system, ideal for dry gas seals in clean and high-speed applications, ensuring reliable performance with minimal wear.
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Features
How API Plan 71 Works
- A dry, inert gas (usually nitrogen or clean instrument air) is supplied to the seal at a controlled pressure.
- The gas flows into the seal chamber, creating a stable gas film that lubricates the seal faces and prevents contact wear.
- Regulators and filters ensure the gas is clean and moisture-free, preventing contamination.
- The system is designed for non-contacting gas seals, minimizing wear and extending seal life.
Benefits
- Prevents Process Contamination – Keeps the seal environment free from dust, moisture, and contaminants.
- Reduces Seal Wear & Increases Longevity – Provides stable gas lubrication, eliminating direct seal face contact.
- Lower Maintenance Costs – Since it's a dry-running system, there is no need for liquid barrier fluids or frequent replacements.
- Simplifies Seal Operation – No need for external fluid reservoirs, pumps, or complex circulation systems.
- Ideal for Clean & Dry Applications – Works well in environments where liquid lubrication is impractical.
Drawbacks
Applications
Warning Notes
Related Technical Papers
Applicable Products
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