API Plan 72
API Plan 72 is a gas quench system designed for dual mechanical seals, where an external inert gas (typically nitrogen or clean, dry air) is supplied to the outer seal chamber at a pressure lower than the process fluid.
This plan is commonly used with dry-running or non-contacting gas seals to prevent contamination, control temperature, and manage emissions.
API Plan 72 is a critical seal support system for dry-running and non-contacting seals, ensuring clean, reliable, and emission-controlled operation in demanding industrial applications.
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Features
How API Plan 72 Works
- A low-pressure external gas supply (e.g., nitrogen or air) is introduced to the outer seal chamber.
- The gas prevents process vapors from condensing on the seal and minimizes build-up or coking.
- It also helps reduce emissions by preventing process fluid from escaping into the atmosphere.
- Pressure regulation and flow control devices are typically included to maintain optimal conditions.
- API Plan 72 is often combined with API Plan 75 or 76 to handle process leakage effectively.
Benefits
- Prevents Contamination & Solid Buildup – Keeps the seal clean and prevents polymerization or coking.
- Minimizes Process Fluid Emissions – Reduces fugitive emissions by diluting or containing leakage.
- Enhances Seal Performance & Longevity – Reduces wear by maintaining an optimal sealing environment.
- Provides Temperature & Pressure Control – Ensures stable operating conditions for dry gas seals.
- Compatible with Additional Plans – Can be used with API Plan 75 or 76 for effective leakage management.
Drawbacks
Applications
Warning Notes
Related Technical Papers
Applicable Products
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