Siemens Building Technology 259-02030 Valve Assembly
The Siemens Building Technology 259-02030 Valve Assembly is a contractor-grade solution for precise fluid control in terminal units like fan coils, baseboards, and reheat coils. This 2-way normally open valve features a 1/2-inch NPT female-by-female connection and is engineered for high-performance hydronic systems. With a 0.4 Cv equal percentage flow characteristic, it ensures linear heat output and stable room temperatures. The rugged forged brass body and brass trim are built to withstand the rigors of commercial HVAC environments, supporting media temperatures up to 250°F and a close-off pressure of 120 psi.
Packaged with a non-spring return floating actuator, this 24Vac electronic valve assembly utilizes a 3-position control signal for accurate positioning. The actuator provides a "fail-in-place" function during power loss, maintaining the last known position to prevent system shocks. Installation is streamlined with a direct-coupled, hand-tightened bonnet nut, requiring no specialized tools. For field troubleshooting, the unit includes a manual override and a clear visual position indicator, making it a reliable choice for building automation systems requiring consistent zone valve performance.
Key Benefits- Precise Flow Control: The 0.4 Cv rating with equal percentage flow provides optimal heat transfer efficiency in small-bore terminal applications.
- Fail-In-Place Security: The non-spring return design ensures the valve maintains its position during power interruptions, preventing unwanted environmental swings.
- Tool-Free Installation: A threaded bonnet allows for fast, direct mounting of the 24Vac actuator to the valve body without extra hardware.
- Durable Metallurgy: High-quality forged brass body and brass internals minimize corrosion risks and extend service life in closed-loop systems.
- Field Visibility: Integrated visual indicators allow technicians to verify valve position at a glance, simplifying commissioning and maintenance.
Is this valve assembly compatible with steam?
This Siemens 259-02030 is primarily designed for hot or chilled water and water-glycol solutions. While the valve body can handle low-pressure steam, this specific model with brass trim is optimized for hydronic applications; stainless steel trim is generally recommended for steam service.
What happens if the 24Vac power is lost?
Since this is a non-spring return actuator, the valve will "fail-in-place." It will stay in its current position until power is restored and a new floating control signal is received.
Can I install this in a plenum?
Yes, the Siemens Powermite MT Series actuators used in these assemblies are UL listed for plenum installations, provided the wiring meets local building codes.
This item is not eligible for free shipping.
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.
Original: $157.12
-65%$157.12
$54.99Siemens Building Technology 259-02030 Valve Assembly
The Siemens Building Technology 259-02030 Valve Assembly is a contractor-grade solution for precise fluid control in terminal units like fan coils, baseboards, and reheat coils. This 2-way normally open valve features a 1/2-inch NPT female-by-female connection and is engineered for high-performance hydronic systems. With a 0.4 Cv equal percentage flow characteristic, it ensures linear heat output and stable room temperatures. The rugged forged brass body and brass trim are built to withstand the rigors of commercial HVAC environments, supporting media temperatures up to 250°F and a close-off pressure of 120 psi.
Packaged with a non-spring return floating actuator, this 24Vac electronic valve assembly utilizes a 3-position control signal for accurate positioning. The actuator provides a "fail-in-place" function during power loss, maintaining the last known position to prevent system shocks. Installation is streamlined with a direct-coupled, hand-tightened bonnet nut, requiring no specialized tools. For field troubleshooting, the unit includes a manual override and a clear visual position indicator, making it a reliable choice for building automation systems requiring consistent zone valve performance.
Key Benefits- Precise Flow Control: The 0.4 Cv rating with equal percentage flow provides optimal heat transfer efficiency in small-bore terminal applications.
- Fail-In-Place Security: The non-spring return design ensures the valve maintains its position during power interruptions, preventing unwanted environmental swings.
- Tool-Free Installation: A threaded bonnet allows for fast, direct mounting of the 24Vac actuator to the valve body without extra hardware.
- Durable Metallurgy: High-quality forged brass body and brass internals minimize corrosion risks and extend service life in closed-loop systems.
- Field Visibility: Integrated visual indicators allow technicians to verify valve position at a glance, simplifying commissioning and maintenance.
Is this valve assembly compatible with steam?
This Siemens 259-02030 is primarily designed for hot or chilled water and water-glycol solutions. While the valve body can handle low-pressure steam, this specific model with brass trim is optimized for hydronic applications; stainless steel trim is generally recommended for steam service.
What happens if the 24Vac power is lost?
Since this is a non-spring return actuator, the valve will "fail-in-place." It will stay in its current position until power is restored and a new floating control signal is received.
Can I install this in a plenum?
Yes, the Siemens Powermite MT Series actuators used in these assemblies are UL listed for plenum installations, provided the wiring meets local building codes.
This item is not eligible for free shipping.
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 259-02030 Valve Assembly is a contractor-grade solution for precise fluid control in terminal units like fan coils, baseboards, and reheat coils. This 2-way normally open valve features a 1/2-inch NPT female-by-female connection and is engineered for high-performance hydronic systems. With a 0.4 Cv equal percentage flow characteristic, it ensures linear heat output and stable room temperatures. The rugged forged brass body and brass trim are built to withstand the rigors of commercial HVAC environments, supporting media temperatures up to 250°F and a close-off pressure of 120 psi.
Packaged with a non-spring return floating actuator, this 24Vac electronic valve assembly utilizes a 3-position control signal for accurate positioning. The actuator provides a "fail-in-place" function during power loss, maintaining the last known position to prevent system shocks. Installation is streamlined with a direct-coupled, hand-tightened bonnet nut, requiring no specialized tools. For field troubleshooting, the unit includes a manual override and a clear visual position indicator, making it a reliable choice for building automation systems requiring consistent zone valve performance.
Key Benefits- Precise Flow Control: The 0.4 Cv rating with equal percentage flow provides optimal heat transfer efficiency in small-bore terminal applications.
- Fail-In-Place Security: The non-spring return design ensures the valve maintains its position during power interruptions, preventing unwanted environmental swings.
- Tool-Free Installation: A threaded bonnet allows for fast, direct mounting of the 24Vac actuator to the valve body without extra hardware.
- Durable Metallurgy: High-quality forged brass body and brass internals minimize corrosion risks and extend service life in closed-loop systems.
- Field Visibility: Integrated visual indicators allow technicians to verify valve position at a glance, simplifying commissioning and maintenance.
Is this valve assembly compatible with steam?
This Siemens 259-02030 is primarily designed for hot or chilled water and water-glycol solutions. While the valve body can handle low-pressure steam, this specific model with brass trim is optimized for hydronic applications; stainless steel trim is generally recommended for steam service.
What happens if the 24Vac power is lost?
Since this is a non-spring return actuator, the valve will "fail-in-place." It will stay in its current position until power is restored and a new floating control signal is received.
Can I install this in a plenum?
Yes, the Siemens Powermite MT Series actuators used in these assemblies are UL listed for plenum installations, provided the wiring meets local building codes.
This item is not eligible for free shipping.
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.
