Resideo - Honeywell Home VCZAR3100 Zone Control Valve AssemblyVCZAR3100 is a 2 way, 1" FNPT connection VC valve assembly for hydronic systems from Resideo Honeywell Home. This model combines compact size with precise flow control, featuring a Cv of 3. 5 and a linear flow design to support stable performance in heating and cooling loops. Designed for easy installation in residential hydronic circuits, the VCZAR3100 offers consistent, predictable response in zone control scenarios and boiler feed lines. Its 1"

Built to meet or exceed original specifications

This makes the 542-A ideal for demanding gas furnace installations in both home and commercial settings

engineered for durable performance and safe furnace operation

1 W holding

it combines proven performance with easy installation for HVAC professionals

making it an easy OEM-style replacement for ongoing boiler performance

Capacitance: 35/3 µF

M4185C1007/U

optimize venting efficiency and safety in commercial and industrial applications

Standards & Certifications ASSE 1017

Junction Box (Single or Dual Knockout)

this model ensures straightforward installation and quick replacement