Siemens Building Technology 599-01117 Valve 322057-301 What does 'normally closed' mean

What does 'normally closed' mean for this solenoid

This DSI control board is a critical component for technicians performing a boiler ignition module replacement to restore optimal firing rates and system efficiency

System Efficiency: Prevents vacuum loss at the collector box

Directional Security: The eccentric locking mechanism ensures the bearing remains fixed during standard rotation

Siemens Building Technology 599-01117 Valve 322057-301 What does 'normally closed' meanThe Siemens 599 01117 is a precision engineered 1 2 inch NPT globe valve designed for demanding HVAC applications requiring high accuracy flow control. This 2 way normally open valve features a 0. 63 Cv equal percentage flow characteristic, making it an ideal choice for chilled water, hot water, and up to 50% glycol solutions. Built with a rugged forged brass body and durable brass trim, the 599 01117 ensures long term reliability in terminal unit