Siemens Building Technology 257-02035 Valve Assembly
The Siemens 257-02035 is a 2-way normally open pneumatic valve assembly designed for precise flow control in HVAC terminal unit applications. This 1/2-inch assembly features an NPT x Union Male connection and an equal percentage flow characteristic with a 1.0 Cv rating, ensuring stable modulating control in water or steam systems. Constructed with a forged brass body and durable brass trim, the unit is engineered for long-term reliability under varying pressure drops. The integrated pneumatic actuator operates within a 3-8 psi spring range, allowing for seamless integration into existing pneumatic control loops. Contractors favor this series for its compact footprint and robust internal components that resist scaling and wear. Ideal for fan coil units and induction units, this Siemens Powerstroke valve provides the mechanical accuracy required to maintain tight temperature setpoints in demanding commercial environments.
Key Benefits for Technicians:- Precise Flow Control: The 1.0 Cv equal percentage plug design prevents hunting and ensures linear heat output.
- Durable Construction: The forged brass body and brass trim offer superior resistance to corrosion and mechanical stress.
- Simplified Installation: Features a Union Male outlet for quick disconnect and maintenance in tight mechanical closets.
- Fail-Safe Operation: The normally open configuration ensures maximum flow during a loss of terminal air pressure.
- Low Friction Packing: Designed to minimize hysteresis and improve sensitivity to pneumatic signal changes.
What is the maximum pressure rating for the Siemens 257-02035?
This 1/2-inch pneumatic valve is typically rated for a maximum static pressure of 250 psi and can handle water temperatures up to 250°F, depending on the specific application parameters.
Is the actuator field-replaceable?
Yes, the pneumatic actuator can be serviced or replaced without removing the valve body from the piping, reducing labor time during HVAC system maintenance.
Does this valve support steam applications?
The brass trim and forged body are compatible with low-pressure steam, provided the Cv rating and spring range align with the system's differential pressure requirements.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Building Technology 257-02035 Valve Assembly
The Siemens 257-02035 is a 2-way normally open pneumatic valve assembly designed for precise flow control in HVAC terminal unit applications. This 1/2-inch assembly features an NPT x Union Male connection and an equal percentage flow characteristic with a 1.0 Cv rating, ensuring stable modulating control in water or steam systems. Constructed with a forged brass body and durable brass trim, the unit is engineered for long-term reliability under varying pressure drops. The integrated pneumatic actuator operates within a 3-8 psi spring range, allowing for seamless integration into existing pneumatic control loops. Contractors favor this series for its compact footprint and robust internal components that resist scaling and wear. Ideal for fan coil units and induction units, this Siemens Powerstroke valve provides the mechanical accuracy required to maintain tight temperature setpoints in demanding commercial environments.
Key Benefits for Technicians:- Precise Flow Control: The 1.0 Cv equal percentage plug design prevents hunting and ensures linear heat output.
- Durable Construction: The forged brass body and brass trim offer superior resistance to corrosion and mechanical stress.
- Simplified Installation: Features a Union Male outlet for quick disconnect and maintenance in tight mechanical closets.
- Fail-Safe Operation: The normally open configuration ensures maximum flow during a loss of terminal air pressure.
- Low Friction Packing: Designed to minimize hysteresis and improve sensitivity to pneumatic signal changes.
What is the maximum pressure rating for the Siemens 257-02035?
This 1/2-inch pneumatic valve is typically rated for a maximum static pressure of 250 psi and can handle water temperatures up to 250°F, depending on the specific application parameters.
Is the actuator field-replaceable?
Yes, the pneumatic actuator can be serviced or replaced without removing the valve body from the piping, reducing labor time during HVAC system maintenance.
Does this valve support steam applications?
The brass trim and forged body are compatible with low-pressure steam, provided the Cv rating and spring range align with the system's differential pressure requirements.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Siemens 257-02035 is a 2-way normally open pneumatic valve assembly designed for precise flow control in HVAC terminal unit applications. This 1/2-inch assembly features an NPT x Union Male connection and an equal percentage flow characteristic with a 1.0 Cv rating, ensuring stable modulating control in water or steam systems. Constructed with a forged brass body and durable brass trim, the unit is engineered for long-term reliability under varying pressure drops. The integrated pneumatic actuator operates within a 3-8 psi spring range, allowing for seamless integration into existing pneumatic control loops. Contractors favor this series for its compact footprint and robust internal components that resist scaling and wear. Ideal for fan coil units and induction units, this Siemens Powerstroke valve provides the mechanical accuracy required to maintain tight temperature setpoints in demanding commercial environments.
Key Benefits for Technicians:- Precise Flow Control: The 1.0 Cv equal percentage plug design prevents hunting and ensures linear heat output.
- Durable Construction: The forged brass body and brass trim offer superior resistance to corrosion and mechanical stress.
- Simplified Installation: Features a Union Male outlet for quick disconnect and maintenance in tight mechanical closets.
- Fail-Safe Operation: The normally open configuration ensures maximum flow during a loss of terminal air pressure.
- Low Friction Packing: Designed to minimize hysteresis and improve sensitivity to pneumatic signal changes.
What is the maximum pressure rating for the Siemens 257-02035?
This 1/2-inch pneumatic valve is typically rated for a maximum static pressure of 250 psi and can handle water temperatures up to 250°F, depending on the specific application parameters.
Is the actuator field-replaceable?
Yes, the pneumatic actuator can be serviced or replaced without removing the valve body from the piping, reducing labor time during HVAC system maintenance.
Does this valve support steam applications?
The brass trim and forged body are compatible with low-pressure steam, provided the Cv rating and spring range align with the system's differential pressure requirements.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
