To completely align API and ISO. , API Third Edition was issued in Since the publication of the Third Edition, seal technology has continued. APIs recent release of Standard Second Edition and the pending release of API Third Edition and ISO represent a major revision to this standard. ISO was finally published in February This article summarizes the development and changes in the 2nd Edition API until its launch in
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API (3RD EDITION) AND ISO STANDARD – Mc Nally Institute
There are many annexes that include references, calculation techniques, and tutorial information. Mc Nally Institute menu O-ring selection Troubleshooting Section Technical paper index Pump and seal cheat sheets Sealing chemicals index Troubleshooting index Charts and graphs index Most asked questions, seals Chemical listing guide Glossary index.
Standard flush 20149 and auxiliary hardware. Category Pumps and seals.
These datasheets are provided in both SI and U. Each has a temperature range: All dimensions are in SI units with the US customary units given in parentheses.
GSO ISO – Standards Store – GCC Standardization Organization
Cast seal glands still require testing. 210049 are some of the highlights of this standard: There are three recommended seal categories: Categories Pumps and seals Posted On Liquid buffer fluid Dual contacting wet seals.
Recommended seal selection procedures that are broken down into three process fluids: In addition, the measured wear on the seal faces must be less than 1 percent of the available wear.
It may also be used on liquid or mixed phase applications. During testing, the seals must maintain a leakage rate of less than ppm as measured by EPA Method 21 or 5. Each has a pressure limit: Seal hydrostatic testing Hydrostatic testing is required for the seal gland, all piping, reservoirs, and other auxiliary equipment exposed to process fluids. The last position defines the piping plan s and is designated by the two-digit piping plan number. Here are two examples: Arrangement 2 Two seals per cartridge assembly with is externally supplied lower pressure buffer fluid between the seals.
The third edition of the standard was finally published in February Annex F — Mechanical seal data sheets One set of datasheets covers Category 1 and 2 seals.
API 682 (3RD EDITION) AND ISO 21149 STANDARD
When the inner seal fails, the containment seal is designed to run under full seal chamber conditions for a minimum of eight hours and prevent or minimize process fluid leakage to atmosphere. The third position defines the seal type and is designated as A, B, or C.
There are three recommended seal categories:.
In the second and latter editions, there is an exemption for seal glands machined from a single piece of wrought material or bar stock. The second position defines the arrangement and is designated as A1, A2, or A3. Here are the recommended metal components:.
Thermosyphon Systems Api 682/Iso 21049 Bfs6000 Bfs 6000
Here are the recommended metal components: Arrangement 3 Two seals per cartridge assembly with an externally supplied higher pressure barrier fluid between the seals. The API standard was originally published in as a guide to selecting seals in the petroleum industry.
Please note that this new standard does not cover the design of the seal components. This design is used primarily on dual pressurized gas seals. The recommended elastomers Secondary seals: Another set covers Category 3 seals.
Posted On February 14, If more than one plan is required such as on dual sealsthe additional plans sio added to the end of the code.
This leakage criterion does not apply to testing of dual gas seals or containment seals under failure conditions. That decision is left to the individual seal manufacturers. Non-hydrocarbons Non-flashing hydrocarbons Flashing hydrocarbons.