Siemens Building Technology 257-02039 Valve Assembly
The Siemens Building Technology 257-02039 is a professional-grade 2-way normally open pneumatic valve assembly from the Powermite 599 Series, engineered specifically for the proportional control of hot or chilled water in terminal units like convectors and fan coils. This unit features a 1/2-inch forged brass body with a durable brass trim, utilizing an NPT x Union Male connection for simplified fieldwork and fitting. With a 2.5 Cv flow coefficient and a modified equal percentage flow characteristic, it provides the precise linear modulation required for stable temperature control in hydronic systems. The integrated 2-inch pneumatic actuator operates on a 3-8 PSI spring range, ensuring fail-safe open positioning during a loss of control air. Built to ANSI Class 250 standards, this straight-through globe valve is rated for up to 45 PSI close-off pressure, making it a reliable standard for veteran contractors maintaining commercial HVAC infrastructures.
Key Benefits:- Precision Modulation: The modified equal percentage design prevents hunting and ensures consistent heat transfer across the full stroke.
- Serviceable Design: Features a union male connection that allows for faster installation and easy removal from tight mechanical spaces without re-piping.
- Durable Construction: The forged brass body and brass trim are rated for ANSI Class 250, providing long-term reliability in high-pressure hydronic loops.
- Fail-Safe Security: The normally open configuration ensures maximum flow for heating or cooling safety if the pneumatic control signal is interrupted.
- Standardized Spring Range: The 3-8 PSI spring return actuator is compatible with most standard HVAC pneumatic thermostats and controllers.
- What is the maximum fluid temperature for this assembly? This Siemens Powermite 599 MT Series valve is rated for water temperatures up to 230°F (110°C) and low-pressure steam up to 15 PSI.
- Can the actuator be replaced without removing the valve body? Yes, the MT Series design allows for direct coupling, meaning the 2-inch pneumatic actuator can be serviced or swapped without breaking the pipe seals.
- Is this valve suitable for steam applications? This specific model (257-02039) with brass trim is optimized for water; for steam service, models with stainless steel trim are generally recommended.
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 257-02039 Valve Assembly
The Siemens Building Technology 257-02039 is a professional-grade 2-way normally open pneumatic valve assembly from the Powermite 599 Series, engineered specifically for the proportional control of hot or chilled water in terminal units like convectors and fan coils. This unit features a 1/2-inch forged brass body with a durable brass trim, utilizing an NPT x Union Male connection for simplified fieldwork and fitting. With a 2.5 Cv flow coefficient and a modified equal percentage flow characteristic, it provides the precise linear modulation required for stable temperature control in hydronic systems. The integrated 2-inch pneumatic actuator operates on a 3-8 PSI spring range, ensuring fail-safe open positioning during a loss of control air. Built to ANSI Class 250 standards, this straight-through globe valve is rated for up to 45 PSI close-off pressure, making it a reliable standard for veteran contractors maintaining commercial HVAC infrastructures.
Key Benefits:- Precision Modulation: The modified equal percentage design prevents hunting and ensures consistent heat transfer across the full stroke.
- Serviceable Design: Features a union male connection that allows for faster installation and easy removal from tight mechanical spaces without re-piping.
- Durable Construction: The forged brass body and brass trim are rated for ANSI Class 250, providing long-term reliability in high-pressure hydronic loops.
- Fail-Safe Security: The normally open configuration ensures maximum flow for heating or cooling safety if the pneumatic control signal is interrupted.
- Standardized Spring Range: The 3-8 PSI spring return actuator is compatible with most standard HVAC pneumatic thermostats and controllers.
- What is the maximum fluid temperature for this assembly? This Siemens Powermite 599 MT Series valve is rated for water temperatures up to 230°F (110°C) and low-pressure steam up to 15 PSI.
- Can the actuator be replaced without removing the valve body? Yes, the MT Series design allows for direct coupling, meaning the 2-inch pneumatic actuator can be serviced or swapped without breaking the pipe seals.
- Is this valve suitable for steam applications? This specific model (257-02039) with brass trim is optimized for water; for steam service, models with stainless steel trim are generally recommended.
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.
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Description
The Siemens Building Technology 257-02039 is a professional-grade 2-way normally open pneumatic valve assembly from the Powermite 599 Series, engineered specifically for the proportional control of hot or chilled water in terminal units like convectors and fan coils. This unit features a 1/2-inch forged brass body with a durable brass trim, utilizing an NPT x Union Male connection for simplified fieldwork and fitting. With a 2.5 Cv flow coefficient and a modified equal percentage flow characteristic, it provides the precise linear modulation required for stable temperature control in hydronic systems. The integrated 2-inch pneumatic actuator operates on a 3-8 PSI spring range, ensuring fail-safe open positioning during a loss of control air. Built to ANSI Class 250 standards, this straight-through globe valve is rated for up to 45 PSI close-off pressure, making it a reliable standard for veteran contractors maintaining commercial HVAC infrastructures.
Key Benefits:- Precision Modulation: The modified equal percentage design prevents hunting and ensures consistent heat transfer across the full stroke.
- Serviceable Design: Features a union male connection that allows for faster installation and easy removal from tight mechanical spaces without re-piping.
- Durable Construction: The forged brass body and brass trim are rated for ANSI Class 250, providing long-term reliability in high-pressure hydronic loops.
- Fail-Safe Security: The normally open configuration ensures maximum flow for heating or cooling safety if the pneumatic control signal is interrupted.
- Standardized Spring Range: The 3-8 PSI spring return actuator is compatible with most standard HVAC pneumatic thermostats and controllers.
- What is the maximum fluid temperature for this assembly? This Siemens Powermite 599 MT Series valve is rated for water temperatures up to 230°F (110°C) and low-pressure steam up to 15 PSI.
- Can the actuator be replaced without removing the valve body? Yes, the MT Series design allows for direct coupling, meaning the 2-inch pneumatic actuator can be serviced or swapped without breaking the pipe seals.
- Is this valve suitable for steam applications? This specific model (257-02039) with brass trim is optimized for water; for steam service, models with stainless steel trim are generally recommended.
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.
