API Plan 22
API Plan 22 is an advanced seal flush system used in single mechanical seals that provides external flushing with cooling and filtration before reintroducing the process fluid into the seal chamber.
This plan is ideal for applications requiring cleaner, cooler, and more stable seal operating conditions.
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Features
How API Plan 22 Works
- Process fluid is taken from the pump discharge.
- The fluid passes through a filter to remove contaminants and prevent solids from reaching the seal.
- The fluid then flows through a cooler, reducing its temperature before entering the seal chamber.
- The clean and cooled fluid is injected into the seal chamber to improve lubrication and cooling.
Comparison with API Plan 11
- Plan 11: Directs unfiltered process fluid from the pump discharge into the seal chamber.
- Plan 22: Improves on Plan 11 by adding filtration and cooling, making it better for high-temperature and clean-seal applications.
API Plan 22 is a high-performance flush plan designed for critical applications where temperature control and fluid cleanliness are essential for maximizing seal reliability and lifespan
Benefits
- Improved Seal Life – Provides cleaner and cooler fluid, reducing wear and thermal stress.
- Effective Cooling – Ideal for high-temperature applications, preventing seal overheating.
- Contaminant Removal – The filter prevents clogging and ensures clean fluid flow to the seal.
- Minimizes Coking & Crystallization – Prevents solid build-up on seal faces in high-temperature
Drawbacks
- Requires Additional Equipment – Needs filters and coolers, increasing complexity and cost.
- Higher Maintenance – Filters and coolers require regular inspection and cleaning.
- Not Ideal for Slurries or Heavy Contaminants – Filters can clog quickly if fluid is highly
Applications
Warning Notes
Related Technical Papers
Applicable Products
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