Description
The Siemens 59902043 N/O Angle Valve 1/2″ NPT Union 4.0CV directs and regulates water flow through a 90-degree valve body using a normally open configuration that responds to actuator input. It operates by shifting an internal plug element to vary passage restriction, allowing modulation of fluid movement through the piping line in HVAC systems. It is used in chilled or hot water circuits to route flow toward coils or terminal units. Its union connection simplifies piping alignment, while the 4.0CV rating defines hydraulic capacity for controlled distribution across connected sections.
