
Siemens Building Technology 171A-10300 Valve Assembly
The Siemens Building Technology 171A-10300 Valve Assembly is a high-performance 2-way normally open control solution designed for precise hydronic regulation. Featuring a durable 1/2" NPT brass body and a chrome-plated brass ball, this assembly is engineered to handle hot water, chilled water, and up to 50% glycol solutions. The integrated 0.4 Cv equal percentage flow characteristic ensures linear heat output, making it ideal for terminal units like fan coils, reheat coils, and convectors. Driven by a 24Vac non-spring return floating actuator, the system provides reliable fail-in-place operation with a 200 psi close-off rating.
For field technicians, the Siemens 599 Series offers a blow-out proof brass stem and a universal mounting plate that allows for 90-degree rotation increments, simplifying installation in tight mechanical spaces. The floating control signal paired with a 44 lb-in torque rating ensures stable positioning without the hunt commonly found in lower-quality assemblies. Its rugged construction supports a media temperature range of 35°F to 250°F, providing the thermal versatility required for demanding commercial HVACR environments.
Key Benefits:- Precision Control: The 0.4 Cv equal percentage ball design prevents temperature swings in low-flow reheat applications.
- Enhanced Durability: Robust brass body and chrome-plated internals resist scale buildup and corrosion in closed-loop systems.
- Flexible Installation: Compact 1/2 inch NPT connections and modular actuator mounting streamline retrofits and new builds.
- High Close-Off: Rated for 200 psi close-off pressure to maintain system integrity under high head conditions.
- What happens during a power failure? This non-spring return actuator is a fail-in-place model, meaning it maintains its last position if the 24Vac supply is interrupted.
- Can this be used for steam applications? No, this assembly is specifically rated for water and glycol mixtures between 35°F and 250°F; it is not intended for steam service.
- Does it include manual override? Yes, the Siemens GDE series actuator features a manual override handle to allow for commissioning or emergency positioning without power.
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.
Siemens Building Technology 171A-10300 Valve Assembly
The Siemens Building Technology 171A-10300 Valve Assembly is a high-performance 2-way normally open control solution designed for precise hydronic regulation. Featuring a durable 1/2" NPT brass body and a chrome-plated brass ball, this assembly is engineered to handle hot water, chilled water, and up to 50% glycol solutions. The integrated 0.4 Cv equal percentage flow characteristic ensures linear heat output, making it ideal for terminal units like fan coils, reheat coils, and convectors. Driven by a 24Vac non-spring return floating actuator, the system provides reliable fail-in-place operation with a 200 psi close-off rating.
For field technicians, the Siemens 599 Series offers a blow-out proof brass stem and a universal mounting plate that allows for 90-degree rotation increments, simplifying installation in tight mechanical spaces. The floating control signal paired with a 44 lb-in torque rating ensures stable positioning without the hunt commonly found in lower-quality assemblies. Its rugged construction supports a media temperature range of 35°F to 250°F, providing the thermal versatility required for demanding commercial HVACR environments.
Key Benefits:- Precision Control: The 0.4 Cv equal percentage ball design prevents temperature swings in low-flow reheat applications.
- Enhanced Durability: Robust brass body and chrome-plated internals resist scale buildup and corrosion in closed-loop systems.
- Flexible Installation: Compact 1/2 inch NPT connections and modular actuator mounting streamline retrofits and new builds.
- High Close-Off: Rated for 200 psi close-off pressure to maintain system integrity under high head conditions.
- What happens during a power failure? This non-spring return actuator is a fail-in-place model, meaning it maintains its last position if the 24Vac supply is interrupted.
- Can this be used for steam applications? No, this assembly is specifically rated for water and glycol mixtures between 35°F and 250°F; it is not intended for steam service.
- Does it include manual override? Yes, the Siemens GDE series actuator features a manual override handle to allow for commissioning or emergency positioning without power.
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 171A-10300 Valve Assembly is a high-performance 2-way normally open control solution designed for precise hydronic regulation. Featuring a durable 1/2" NPT brass body and a chrome-plated brass ball, this assembly is engineered to handle hot water, chilled water, and up to 50% glycol solutions. The integrated 0.4 Cv equal percentage flow characteristic ensures linear heat output, making it ideal for terminal units like fan coils, reheat coils, and convectors. Driven by a 24Vac non-spring return floating actuator, the system provides reliable fail-in-place operation with a 200 psi close-off rating.
For field technicians, the Siemens 599 Series offers a blow-out proof brass stem and a universal mounting plate that allows for 90-degree rotation increments, simplifying installation in tight mechanical spaces. The floating control signal paired with a 44 lb-in torque rating ensures stable positioning without the hunt commonly found in lower-quality assemblies. Its rugged construction supports a media temperature range of 35°F to 250°F, providing the thermal versatility required for demanding commercial HVACR environments.
Key Benefits:- Precision Control: The 0.4 Cv equal percentage ball design prevents temperature swings in low-flow reheat applications.
- Enhanced Durability: Robust brass body and chrome-plated internals resist scale buildup and corrosion in closed-loop systems.
- Flexible Installation: Compact 1/2 inch NPT connections and modular actuator mounting streamline retrofits and new builds.
- High Close-Off: Rated for 200 psi close-off pressure to maintain system integrity under high head conditions.
- What happens during a power failure? This non-spring return actuator is a fail-in-place model, meaning it maintains its last position if the 24Vac supply is interrupted.
- Can this be used for steam applications? No, this assembly is specifically rated for water and glycol mixtures between 35°F and 250°F; it is not intended for steam service.
- Does it include manual override? Yes, the Siemens GDE series actuator features a manual override handle to allow for commissioning or emergency positioning without power.
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.












