This Fluid Sealing Association Knowledge Series training presentation introduces API
Piping Plan 21. A description is provided on:

▪ What is an API Plan 21?

▪ How an API Plan 21 Works

▪ What does an API Plan 21 do?

▪ What an API Plan 21 cannot do

▪ Optional Features for an API Plan 21

▪ Cost to Operate an API Plan 21

▪ How to Size an API Plan 21

▪ How to Install an API Plan 21

▪ General API Plan 21 Commissioning Guidelines

▪ How to Operate an API Plan 21

▪ General Troubleshooting of an API Plan 21

▪ Alternatives to an API Plan 21



Resource Details

Author(s): Fluid Sealing Association® — Mechanical Seals

Date Published: Aug-2025

Format: PDF