This genuine OEM replacement part ensures your equipment operates within safe parameters

The Siemens Building Technology 331-4311 Actuator is a No

enabling tool-free actuator removal and manual override for faster system Commissioning and troubleshooting

If your sequence of operations requires a dry contact signal to start a pump or boiler upon valve opening

Reliable Mechanical Operation: Spring-wound design functions independently of power outages for consistent performance

Trane TRR0826 Transformer Els PW 17895 This genuine OEM replacement partThe Trane TRR0826 is a heavy duty, industrial grade control circuit transformer engineered for high voltage commercial HVAC applications. Built to handle primary inputs of 460V to 575V, this 75VA rated transformer provides a stable and regulated 24V secondary output, ensuring clean power delivery to sensitive electronic components including thermostats, relays, ignition modules, and integrated furnace control boards. Its dual frequency (50 60Hz)