Description
The Siemens 599-10300S is a precision-engineered two-way ball valve designed for demanding HVAC hydronic and building automation applications. Featuring a durable brass body paired with a stainless steel ball and stem, this valve delivers reliable, long-lasting performance in commercial and industrial control systems.
Key Features
- 1/2″ NPT end connections for straightforward installation into standard piping systems
- 0.4 Cv flow coefficient for accurate, low-flow control in precision applications
- Two-way configuration for on/off or modulating flow control
- Equal percentage flow characteristic for superior control linearity across the full valve stroke
- Brass body construction offers excellent corrosion resistance and durability
- Stainless steel ball and stem provide enhanced resistance to wear, corrosion, and high-cycle fatigue
- Designed for compatibility with Siemens Building Technology actuators
Construction & Materials
- Body Material: Brass
- Ball & Stem Material: Stainless Steel
- End Connection: 1/2″ NPT (National Pipe Thread)
- Flow Characteristic: Equal Percentage
- Configuration: Two-Way
- Cv Rating: 0.4
Applications
- Hydronic heating and cooling systems
- Building automation and energy management systems
- Fan coil units and air handling units
- Commercial HVAC control loops requiring precise flow modulation
The equal percentage flow characteristic of the 599-10300S ensures that equal increments of valve stem travel produce equal percentage changes in flow, making it ideal for systems where precise, stable control is critical. Backed by Siemens Building Technology’s reputation for quality, this valve is a trusted choice for HVAC contractors and building automation professionals.







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