Description
The Reznor 257975 is a complete valve and actuator assembly engineered for reliable two-position flow control in commercial HVAC hydronic and heating applications. Built around a brass body ball valve with plated brass trim, this assembly delivers consistent equal percentage flow characteristics — ideal for coil control and zone applications where precise, repeatable flow modulation is critical.
Paired with a 24Vac non-spring return two-position actuator featuring a standard profile, this assembly offers straightforward on/off control without the need for a return spring, simplifying installation and reducing mechanical wear over time.
Key Features
- 3/4″ NPT connection for easy integration into standard piping systems
- 24Vac actuator — compatible with common low-voltage HVAC control systems
- 4.3 Cv flow coefficient for accurate flow capacity sizing
- Two-way equal percentage flow characteristic for stable control performance
- Brass body construction with plated brass trim for durability and corrosion resistance
- Non-spring return actuator — holds last position on power loss
- Two-position (on/off) control with standard profile actuator
- Factory-assembled valve and actuator for simplified installation
Specifications
- SKU: 257975
- Brand: Reznor
- Connection Size: 3/4″ NPT
- Actuator Voltage: 24Vac
- Flow Coefficient (Cv): 4.3
- Valve Type: Two-Way Ball Valve
- Flow Characteristic: Equal Percentage
- Body Material: Brass
- Trim Material: Plated Brass
- Actuator Type: Non-Spring Return, Two-Position
- Actuator Profile: Standard
Applications
- Commercial HVAC hydronic heating and cooling coil control
- Zone valve applications requiring two-position on/off control
- Fan coil units and air handling unit coil circuits
- Reznor unit heater and heating system piping assemblies
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