the 16B-33 controller features two separate outputs which can be configured for direct or reverse acting control

Swapping it with an AC-rated coil or the wrong voltage will result in immediate coil burnout or failure to actuate the plunger due to insufficient magnetic flux

For technicians performing retrofits or maintenance on existing Siemens infrastructure

it meets UL and CSA standards

it maintains precise control within a 0-5 PSI range

Siemens Building Technology 274-03054 Valve Assembly 318518-761 the 16B-33 controller features twoThe Siemens Building Technology 274 03054 Valve Assembly is a precision engineered control solution for commercial HVACR hydronic systems. This factory assembled 2 way normally open valve features a 1 2" NPT connection and a 1. 0 Cv rating, optimized for low flow modulation in fan coil units, air handlers, and reheat coils. The bronze body (UNS CA 844) is paired with stainless steel trim and high temperature packing, enabling the assembly to handle