Siemens Building Technology 656-0017 Valve
The Siemens Building Technology 656-0017 is a heavy-duty 1/2 inch pneumatic radiator valve engineered for proportional control in two-pipe steam or hot water systems. This normally open (N.O.) assembly features an angle union valve body constructed from durable brass, designed specifically for terminal unit applications like convectors, fan coil units, and baseboard radiation. With a 2.1 Cv capacity and a standard 3-8 psi spring range, this valve ensures precise throttling and modulation. The unit utilizes a stainless steel valve stem and a dual-sealing packed construction, providing reliable performance in high-pressure environments up to 125 psi WOG. A key advantage for field technicians is the replaceable soft disc and the ability to repack the valve without shutting down the system, significantly reducing downtime during routine maintenance. The compact 2-inch pneumatic actuator can be rotated to accommodate various air line orientations, making it ideal for restricted cabinet enclosures and tight mechanical spaces.
Key Benefits- System Continuity: Designed for top-entry service, allowing for inspection and upper packing replacement without system blowdown or valve body removal.
- Precise Modulation: Features modified equal percentage throttling characteristics for stable temperature control in hydronic and steam loops.
- Tight Shut-off: Equipped with a replaceable composition disc that ensures positive closure and prevents energy-wasting leakage.
- Installation Flexibility: The 360-degree rotatable actuator simplifies pneumatic piping in congested terminal unit cabinets.
- Corrosion Resistance: High-grade brass body and stainless steel internals resist scale buildup and friction-related wear.
What is the maximum fluid temperature rating for this valve?
The valve is rated for a maximum fluid temperature of 250°F (121°C), making it suitable for both low-pressure steam and high-temperature hot water applications.
Can the actuator be replaced without replacing the entire valve?
Yes, the 656 series uses a modular design where the 2-inch pneumatic actuator can be removed and replaced independently of the valve body.
What is the close-off pressure for this 1/2" model?
This specific configuration provides a close-off pressure of up to 95 psi, ensuring reliable operation even in high-rise building systems with significant differential pressures.
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: $205.86
-65%$205.86
$72.05Siemens Building Technology 656-0017 Valve
The Siemens Building Technology 656-0017 is a heavy-duty 1/2 inch pneumatic radiator valve engineered for proportional control in two-pipe steam or hot water systems. This normally open (N.O.) assembly features an angle union valve body constructed from durable brass, designed specifically for terminal unit applications like convectors, fan coil units, and baseboard radiation. With a 2.1 Cv capacity and a standard 3-8 psi spring range, this valve ensures precise throttling and modulation. The unit utilizes a stainless steel valve stem and a dual-sealing packed construction, providing reliable performance in high-pressure environments up to 125 psi WOG. A key advantage for field technicians is the replaceable soft disc and the ability to repack the valve without shutting down the system, significantly reducing downtime during routine maintenance. The compact 2-inch pneumatic actuator can be rotated to accommodate various air line orientations, making it ideal for restricted cabinet enclosures and tight mechanical spaces.
Key Benefits- System Continuity: Designed for top-entry service, allowing for inspection and upper packing replacement without system blowdown or valve body removal.
- Precise Modulation: Features modified equal percentage throttling characteristics for stable temperature control in hydronic and steam loops.
- Tight Shut-off: Equipped with a replaceable composition disc that ensures positive closure and prevents energy-wasting leakage.
- Installation Flexibility: The 360-degree rotatable actuator simplifies pneumatic piping in congested terminal unit cabinets.
- Corrosion Resistance: High-grade brass body and stainless steel internals resist scale buildup and friction-related wear.
What is the maximum fluid temperature rating for this valve?
The valve is rated for a maximum fluid temperature of 250°F (121°C), making it suitable for both low-pressure steam and high-temperature hot water applications.
Can the actuator be replaced without replacing the entire valve?
Yes, the 656 series uses a modular design where the 2-inch pneumatic actuator can be removed and replaced independently of the valve body.
What is the close-off pressure for this 1/2" model?
This specific configuration provides a close-off pressure of up to 95 psi, ensuring reliable operation even in high-rise building systems with significant differential pressures.
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 656-0017 is a heavy-duty 1/2 inch pneumatic radiator valve engineered for proportional control in two-pipe steam or hot water systems. This normally open (N.O.) assembly features an angle union valve body constructed from durable brass, designed specifically for terminal unit applications like convectors, fan coil units, and baseboard radiation. With a 2.1 Cv capacity and a standard 3-8 psi spring range, this valve ensures precise throttling and modulation. The unit utilizes a stainless steel valve stem and a dual-sealing packed construction, providing reliable performance in high-pressure environments up to 125 psi WOG. A key advantage for field technicians is the replaceable soft disc and the ability to repack the valve without shutting down the system, significantly reducing downtime during routine maintenance. The compact 2-inch pneumatic actuator can be rotated to accommodate various air line orientations, making it ideal for restricted cabinet enclosures and tight mechanical spaces.
Key Benefits- System Continuity: Designed for top-entry service, allowing for inspection and upper packing replacement without system blowdown or valve body removal.
- Precise Modulation: Features modified equal percentage throttling characteristics for stable temperature control in hydronic and steam loops.
- Tight Shut-off: Equipped with a replaceable composition disc that ensures positive closure and prevents energy-wasting leakage.
- Installation Flexibility: The 360-degree rotatable actuator simplifies pneumatic piping in congested terminal unit cabinets.
- Corrosion Resistance: High-grade brass body and stainless steel internals resist scale buildup and friction-related wear.
What is the maximum fluid temperature rating for this valve?
The valve is rated for a maximum fluid temperature of 250°F (121°C), making it suitable for both low-pressure steam and high-temperature hot water applications.
Can the actuator be replaced without replacing the entire valve?
Yes, the 656 series uses a modular design where the 2-inch pneumatic actuator can be removed and replaced independently of the valve body.
What is the close-off pressure for this 1/2" model?
This specific configuration provides a close-off pressure of up to 95 psi, ensuring reliable operation even in high-rise building systems with significant differential pressures.
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.
