Replacement is necessary if you observe visible rust

For contractors performing a control module replacement

Enhanced Versatility: The included 1/4 x 1/2 reducing bushing makes this unit adaptable to multiple pipe diameters and manifold types

or improper installation can cause plastic pans to crack

or visible soot and oxidation on the 12-inch tip

Siemens Building Technology VVP45.15-2.5 Valve 320788-703 Replacement is necessary if youThe Siemens Building Technology VVP45. 15 2. 5 Valve is a 3 4" 2W 2. 9cv zone valve engineered for precision water side control in closed circuit HVAC systems. As a veteran technician, you know that Siemens Acvatix series valves are the standard for terminal unit control in fan coils, induction units, and zone heating applications. This 2 port seat valve features a robust bronze body (CC499K) designed for a nominal pressure of PN 16, ensuring reliable