TEMA / API 660 / API 661 Heat exchangers (shell-and-tube, air-cooled)
CurrentLatest edition found. Still confirm amendments with the publisher.
- Edition
- TEMA 2026 Edition (11th); API 660 9th ed., 2015 (R2025); API 661 7th ed., 2013 (R2024)
- Publisher
- TEMA
- Part family
- Pressure vessels & piping codes
- Reviewed
- 23 October 2026 · source checked
Is TEMA / API 660 / API 661 still current?
Yes. TEMA 2026 Edition (11th); API 660 9th ed., 2015 (R2025); API 661 7th ed., 2013 (R2024) is the latest edition MechAtlas found (MechAtlas review: 23 October 2026). Check the publisher for amendments before you specify it.
What it covers
Heat exchangers (shell-and-tube, air-cooled)
TEMA 2026 edition replaces the 10th edition (2019).
Equivalent and related standards
| Standard | Relationship | Note |
|---|---|---|
| ISO 16812 / 13706 | Similar purpose — not interchangeable without an engineering check |
“Similar” never means interchangeable without an engineering check.
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for TEMA / API 660 / API 661 or the TEMA store.
Open in MechAtlasCheck a drawing callout
Other pressure vessels & piping codes standards
- API 650 Current
Welded oil storage tanks - API 653 / API 620 Current
Tank inspection & repair / low-pressure tanks - ASME B31.1 Current
Power piping - ASME B31.3 Current
Process piping - ASME BPVC Current
Boilers, materials, pressure vessels, overpressure protection - EJMA / EN 14917 Current
Expansion joints - EN 13445 parts 1–5 Current
Unfired pressure vessels - EN 13480-1/-2/-4 Current
Metallic industrial piping - India Boilers Act Current
Statutory boiler regulation