Description
The Caleffi 6687D5S1A is a TwistFlow pre-assembled radiant distribution manifold with 4 loops and a 1-1/4 in trunk, distributing and balancing heating fluid to each circuit of a radiant floor or panel system with built-in per-loop flow gauges.
Product data compiled from Caleffi North America technical documentation. Last reviewed July 2026.
FunctionRadiant Manifold
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