Honeywell VP512A1742 Valve
The Honeywell VP512A1742 is a heavy-duty, 1-inch normally open pneumatic unit ventilator valve designed for the proportional control of steam or hot water in commercial HVAC systems. Built with a right angle body pattern and high-quality bronze construction, this globe-style valve features a 10 Cv flow capacity and a 3-8 psi spring range, ensuring precise modulation for terminal unit applications. As a direct replacement for 658-0012, it is engineered for seamless field integration with existing pneumatic control systems, utilizing dual barbed air connections compatible with 5/32" or 1/4" plastic tubing.
Technicians will appreciate the equal percentage throttling guide, which provides stable control over varying load conditions to maintain consistent building temperatures. The inclusion of a self-adjusting Teflon packing and replaceable brass seat allows for long-term reliability in high-demand environments. Additionally, the back-seating feature provides a critical maintenance advantage, enabling the valve to be repacked while the system remains pressurized and operational, minimizing downtime for the contractor.
Key Benefits for HVAC Contractors
- High Body Pressure Rating: Rated for up to 150 psi, making it suitable for a wide range of steam and hydronic heating systems.
- Field Serviceability: Features a replaceable composition disc and brass seat for tight shut-off and extended service life.
- Flexible Installation: The rotatable actuator allows for easy alignment with control air piping, while the integral union connection simplifies the mounting process.
- Broad Compatibility: Serves as a reliable unit vent valve replacement for various legacy pneumatic devices from Johnson, Robertshaw, and Barber-Colman.
Common Questions
Is the Honeywell VP512A1742 compatible with both steam and water?
Yes, this 1 inch pneumatic valve is specifically designed for use in both steam (up to 275°F) and hot water (up to 240°F) applications commonly found in unit ventilators.
Can I use different tubing sizes for the air connection?
The valve is equipped with dual barbed fittings, allowing for direct connection to either 5/32" or 1/4" plastic pneumatic tubing without the need for additional adapters.
What happens if control air pressure is lost?
This is a proportional normally open valve (air-to-close), meaning it will fail to the open position upon loss of control air, ensuring heat flow continues as a fail-safe.
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: $340.35
-65%$340.35
$119.12Honeywell VP512A1742 Valve
The Honeywell VP512A1742 is a heavy-duty, 1-inch normally open pneumatic unit ventilator valve designed for the proportional control of steam or hot water in commercial HVAC systems. Built with a right angle body pattern and high-quality bronze construction, this globe-style valve features a 10 Cv flow capacity and a 3-8 psi spring range, ensuring precise modulation for terminal unit applications. As a direct replacement for 658-0012, it is engineered for seamless field integration with existing pneumatic control systems, utilizing dual barbed air connections compatible with 5/32" or 1/4" plastic tubing.
Technicians will appreciate the equal percentage throttling guide, which provides stable control over varying load conditions to maintain consistent building temperatures. The inclusion of a self-adjusting Teflon packing and replaceable brass seat allows for long-term reliability in high-demand environments. Additionally, the back-seating feature provides a critical maintenance advantage, enabling the valve to be repacked while the system remains pressurized and operational, minimizing downtime for the contractor.
Key Benefits for HVAC Contractors
- High Body Pressure Rating: Rated for up to 150 psi, making it suitable for a wide range of steam and hydronic heating systems.
- Field Serviceability: Features a replaceable composition disc and brass seat for tight shut-off and extended service life.
- Flexible Installation: The rotatable actuator allows for easy alignment with control air piping, while the integral union connection simplifies the mounting process.
- Broad Compatibility: Serves as a reliable unit vent valve replacement for various legacy pneumatic devices from Johnson, Robertshaw, and Barber-Colman.
Common Questions
Is the Honeywell VP512A1742 compatible with both steam and water?
Yes, this 1 inch pneumatic valve is specifically designed for use in both steam (up to 275°F) and hot water (up to 240°F) applications commonly found in unit ventilators.
Can I use different tubing sizes for the air connection?
The valve is equipped with dual barbed fittings, allowing for direct connection to either 5/32" or 1/4" plastic pneumatic tubing without the need for additional adapters.
What happens if control air pressure is lost?
This is a proportional normally open valve (air-to-close), meaning it will fail to the open position upon loss of control air, ensuring heat flow continues as a fail-safe.
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.
Product Information
Product Information
Shipping & Returns
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Description
The Honeywell VP512A1742 is a heavy-duty, 1-inch normally open pneumatic unit ventilator valve designed for the proportional control of steam or hot water in commercial HVAC systems. Built with a right angle body pattern and high-quality bronze construction, this globe-style valve features a 10 Cv flow capacity and a 3-8 psi spring range, ensuring precise modulation for terminal unit applications. As a direct replacement for 658-0012, it is engineered for seamless field integration with existing pneumatic control systems, utilizing dual barbed air connections compatible with 5/32" or 1/4" plastic tubing.
Technicians will appreciate the equal percentage throttling guide, which provides stable control over varying load conditions to maintain consistent building temperatures. The inclusion of a self-adjusting Teflon packing and replaceable brass seat allows for long-term reliability in high-demand environments. Additionally, the back-seating feature provides a critical maintenance advantage, enabling the valve to be repacked while the system remains pressurized and operational, minimizing downtime for the contractor.
Key Benefits for HVAC Contractors
- High Body Pressure Rating: Rated for up to 150 psi, making it suitable for a wide range of steam and hydronic heating systems.
- Field Serviceability: Features a replaceable composition disc and brass seat for tight shut-off and extended service life.
- Flexible Installation: The rotatable actuator allows for easy alignment with control air piping, while the integral union connection simplifies the mounting process.
- Broad Compatibility: Serves as a reliable unit vent valve replacement for various legacy pneumatic devices from Johnson, Robertshaw, and Barber-Colman.
Common Questions
Is the Honeywell VP512A1742 compatible with both steam and water?
Yes, this 1 inch pneumatic valve is specifically designed for use in both steam (up to 275°F) and hot water (up to 240°F) applications commonly found in unit ventilators.
Can I use different tubing sizes for the air connection?
The valve is equipped with dual barbed fittings, allowing for direct connection to either 5/32" or 1/4" plastic pneumatic tubing without the need for additional adapters.
What happens if control air pressure is lost?
This is a proportional normally open valve (air-to-close), meaning it will fail to the open position upon loss of control air, ensuring heat flow continues as a fail-safe.
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.
