Mueller Industries A17939 Check Valve
The Mueller Industries A17939 is a high-performance 7/8" Magnetic Check Valve designed for critical backflow prevention in commercial refrigeration and air conditioning systems. Engineered with a hermetically formed solid copper body, this valve eliminates potential leak paths, ensuring system integrity under high-pressure conditions up to 800 PSI (55 bar). The internal magnetic mechanism provides a positive seal with a minimum pressure differential of less than 1 PSI to open, offering superior pulsation dampening and reducing liquid hammer in the discharge line.
Built for versatility, the A17939 supports both vertical and horizontal installation and is compatible with all major CFC, HCFC, and HFC refrigerants and oils. The integration of DuraForm processing prevents overheating of internal components during the brazing process, while the built-in 30 mesh stainless steel screen protects the Teflon seat from debris. For field technicians, the solder cup stops ensure precise fitment and streamlined installation during compressor swap-outs or system retrofits.
Key Benefits
- High Pressure Rating: Rated for a maximum working pressure of 800 PSI, making it suitable for modern high-pressure refrigerants like R-410A.
- Leak-Free Construction: The solid copper body and hermetic design provide zero leak potential compared to traditional multi-part brass housings.
- Debris Protection: An internal stainless steel screen prevents particulate matter from fouling the seat, extending component life in industrial HVACR applications.
- Low Pressure Drop: Optimized internal geometry ensures maximum flow capacity (8.0 Cv) with minimal pressure drop across the valve.
- Extreme Temperature Range: Fully functional from -40°F to 300°F, allowing for use in both liquid lines and hot gas discharge lines.
Common Questions
Can the A17939 be installed in any orientation?
Yes, the magnetic design allows for reliable operation in both vertical and horizontal positions, though it should not be installed with the internal components facing downward where debris collection is high.
Is this valve compatible with POE oils?
Yes, it is fully compatible with Mineral, Naphthenic, and POE oils, as well as common refrigerants like R-22, R-134a, R-404A, and R-410A.
What prevents the internal magnet from de-magnetizing during brazing?
The DuraForm technology used in manufacturing is specifically designed to protect the internal magnetic circuit and synthetic seating materials from heat damage during standard installation procedures.
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.
Mueller Industries A17939 Check Valve
The Mueller Industries A17939 is a high-performance 7/8" Magnetic Check Valve designed for critical backflow prevention in commercial refrigeration and air conditioning systems. Engineered with a hermetically formed solid copper body, this valve eliminates potential leak paths, ensuring system integrity under high-pressure conditions up to 800 PSI (55 bar). The internal magnetic mechanism provides a positive seal with a minimum pressure differential of less than 1 PSI to open, offering superior pulsation dampening and reducing liquid hammer in the discharge line.
Built for versatility, the A17939 supports both vertical and horizontal installation and is compatible with all major CFC, HCFC, and HFC refrigerants and oils. The integration of DuraForm processing prevents overheating of internal components during the brazing process, while the built-in 30 mesh stainless steel screen protects the Teflon seat from debris. For field technicians, the solder cup stops ensure precise fitment and streamlined installation during compressor swap-outs or system retrofits.
Key Benefits
- High Pressure Rating: Rated for a maximum working pressure of 800 PSI, making it suitable for modern high-pressure refrigerants like R-410A.
- Leak-Free Construction: The solid copper body and hermetic design provide zero leak potential compared to traditional multi-part brass housings.
- Debris Protection: An internal stainless steel screen prevents particulate matter from fouling the seat, extending component life in industrial HVACR applications.
- Low Pressure Drop: Optimized internal geometry ensures maximum flow capacity (8.0 Cv) with minimal pressure drop across the valve.
- Extreme Temperature Range: Fully functional from -40°F to 300°F, allowing for use in both liquid lines and hot gas discharge lines.
Common Questions
Can the A17939 be installed in any orientation?
Yes, the magnetic design allows for reliable operation in both vertical and horizontal positions, though it should not be installed with the internal components facing downward where debris collection is high.
Is this valve compatible with POE oils?
Yes, it is fully compatible with Mineral, Naphthenic, and POE oils, as well as common refrigerants like R-22, R-134a, R-404A, and R-410A.
What prevents the internal magnet from de-magnetizing during brazing?
The DuraForm technology used in manufacturing is specifically designed to protect the internal magnetic circuit and synthetic seating materials from heat damage during standard installation procedures.
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
Shipping & Returns
Description
The Mueller Industries A17939 is a high-performance 7/8" Magnetic Check Valve designed for critical backflow prevention in commercial refrigeration and air conditioning systems. Engineered with a hermetically formed solid copper body, this valve eliminates potential leak paths, ensuring system integrity under high-pressure conditions up to 800 PSI (55 bar). The internal magnetic mechanism provides a positive seal with a minimum pressure differential of less than 1 PSI to open, offering superior pulsation dampening and reducing liquid hammer in the discharge line.
Built for versatility, the A17939 supports both vertical and horizontal installation and is compatible with all major CFC, HCFC, and HFC refrigerants and oils. The integration of DuraForm processing prevents overheating of internal components during the brazing process, while the built-in 30 mesh stainless steel screen protects the Teflon seat from debris. For field technicians, the solder cup stops ensure precise fitment and streamlined installation during compressor swap-outs or system retrofits.
Key Benefits
- High Pressure Rating: Rated for a maximum working pressure of 800 PSI, making it suitable for modern high-pressure refrigerants like R-410A.
- Leak-Free Construction: The solid copper body and hermetic design provide zero leak potential compared to traditional multi-part brass housings.
- Debris Protection: An internal stainless steel screen prevents particulate matter from fouling the seat, extending component life in industrial HVACR applications.
- Low Pressure Drop: Optimized internal geometry ensures maximum flow capacity (8.0 Cv) with minimal pressure drop across the valve.
- Extreme Temperature Range: Fully functional from -40°F to 300°F, allowing for use in both liquid lines and hot gas discharge lines.
Common Questions
Can the A17939 be installed in any orientation?
Yes, the magnetic design allows for reliable operation in both vertical and horizontal positions, though it should not be installed with the internal components facing downward where debris collection is high.
Is this valve compatible with POE oils?
Yes, it is fully compatible with Mineral, Naphthenic, and POE oils, as well as common refrigerants like R-22, R-134a, R-404A, and R-410A.
What prevents the internal magnet from de-magnetizing during brazing?
The DuraForm technology used in manufacturing is specifically designed to protect the internal magnetic circuit and synthetic seating materials from heat damage during standard installation procedures.
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.
