#1.7 Mixing Valve Sizing: Why Pipe Size is Misleading?
From Ask Caleffi by Caleffi North America, Inc.
May 1, 2026 · 19 min
About this episode
This episode explores the mechanics and sizing of thermostatic and digital mixing valves, emphasizing the importance of design flow over pipe size.
We’re diving deep into the practical mechanics of thermostatic and digital mixing valves, featuring the Caleffi 521 Series and the 520 AngleMix™. Moving beyond the spec sheet, we break down how these valves actually behave in the field, and why sizing design flow rather than pipe size is critical for performance. What we cover in this session: The Standards Playbook: Why distinguishing between ASSE 1017 (point-of-distribution) and ASSE 1070 (point-of-use) is the only way to ensure true ...
Topics covered
- mixing valves
- thermostatic valves
- digital mixing valves
- sizing design flow
- performance
- standards
Keywords
- mixing valves
- thermostatic
- digital
- Caleffi
- pipe size
- performance
- ASSE 1017
- ASSE 1070
Mentioned in this episode
Organizations: Caleffi North America, Inc.
Products: Caleffi 521 Series, 520 AngleMix™
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