Lennox 52W76 TXV
The Lennox 52W76 is a 5-ton thermostatic expansion valve (TXV) engineered for high-capacity R-410A refrigerant systems. Designed as a direct OEM replacement part, this metering device features 1/2" x 1/2" ODF connections and a 30-inch capillary tube for precise superheat regulation. As a veteran technician knows, maintaining the correct refrigerant flow is critical to preventing evaporator flooding or compressor slugging; the 52W76 achieves this by sensing suction line temperature via its bulb and adjusting the internal orifice in real-time. This thermal expansion valve is built with a rugged brass body to withstand high-pressure environments common in industrial and commercial HVACR applications. When swapping a stuck TXV, the 1/2" sweat (ODF) configuration ensures a secure, leak-free braze joint. For contractors troubleshooting starving coils or hunting issues, this 5-ton TXV provides the reliability needed for Lennox heat pumps and air conditioning units, ensuring the system hits its target subcooling and cooling efficiency benchmarks without the risks associated with non-genuine parts.
Key Benefits for HVACR Professionals
- Precision Metering: Accurately controls R-410A expansion to maintain optimal superheat and prevent evaporator icing.
- Universal Fit: Standard 1/2" x 1/2" ODF sweat connections simplify installation in various 5-ton setups.
- Extended Reach: The 30" capillary tube offers flexibility for bulb placement on larger suction lines.
- OEM Compatibility: Specifically designed for Lennox HVAC systems to ensure matched performance with original equipment specifications.
- Durable Construction: Heavy-duty brass housing resists corrosion and pressure spikes in demanding refrigeration cycles.
Common Questions & Technical Insights
How do I diagnose a failing Lennox 52W76 TXV?
Usually, you'll see low suction pressure and high superheat if the valve is stuck closed (starving). If it’s stuck open (flooding), you’ll see high suction pressure and near-zero superheat. Always check your liquid line filter drier for a temperature drop first to rule out a restriction before condemning the valve.
What is the correct sensing bulb placement for this 5-ton valve?
On suction lines 7/8" or larger, the bulb should be mounted at the 4 or 8 o’clock position. For lines smaller than 7/8", 12 o’clock is standard. Ensure the bulb is insulated and tight against clean copper to prevent false readings from ambient air.
Can this valve be field-adjusted?
While some valves have an adjustment stem, we recommend using the factory settings for most Lennox 52W76 applications. If the system is hunting excessively, verify your subcooling at the liquid line before attempting any mechanical adjustments.
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: $153.21
-65%$153.21
$53.62Lennox 52W76 TXV
The Lennox 52W76 is a 5-ton thermostatic expansion valve (TXV) engineered for high-capacity R-410A refrigerant systems. Designed as a direct OEM replacement part, this metering device features 1/2" x 1/2" ODF connections and a 30-inch capillary tube for precise superheat regulation. As a veteran technician knows, maintaining the correct refrigerant flow is critical to preventing evaporator flooding or compressor slugging; the 52W76 achieves this by sensing suction line temperature via its bulb and adjusting the internal orifice in real-time. This thermal expansion valve is built with a rugged brass body to withstand high-pressure environments common in industrial and commercial HVACR applications. When swapping a stuck TXV, the 1/2" sweat (ODF) configuration ensures a secure, leak-free braze joint. For contractors troubleshooting starving coils or hunting issues, this 5-ton TXV provides the reliability needed for Lennox heat pumps and air conditioning units, ensuring the system hits its target subcooling and cooling efficiency benchmarks without the risks associated with non-genuine parts.
Key Benefits for HVACR Professionals
- Precision Metering: Accurately controls R-410A expansion to maintain optimal superheat and prevent evaporator icing.
- Universal Fit: Standard 1/2" x 1/2" ODF sweat connections simplify installation in various 5-ton setups.
- Extended Reach: The 30" capillary tube offers flexibility for bulb placement on larger suction lines.
- OEM Compatibility: Specifically designed for Lennox HVAC systems to ensure matched performance with original equipment specifications.
- Durable Construction: Heavy-duty brass housing resists corrosion and pressure spikes in demanding refrigeration cycles.
Common Questions & Technical Insights
How do I diagnose a failing Lennox 52W76 TXV?
Usually, you'll see low suction pressure and high superheat if the valve is stuck closed (starving). If it’s stuck open (flooding), you’ll see high suction pressure and near-zero superheat. Always check your liquid line filter drier for a temperature drop first to rule out a restriction before condemning the valve.
What is the correct sensing bulb placement for this 5-ton valve?
On suction lines 7/8" or larger, the bulb should be mounted at the 4 or 8 o’clock position. For lines smaller than 7/8", 12 o’clock is standard. Ensure the bulb is insulated and tight against clean copper to prevent false readings from ambient air.
Can this valve be field-adjusted?
While some valves have an adjustment stem, we recommend using the factory settings for most Lennox 52W76 applications. If the system is hunting excessively, verify your subcooling at the liquid line before attempting any mechanical adjustments.
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 Lennox 52W76 is a 5-ton thermostatic expansion valve (TXV) engineered for high-capacity R-410A refrigerant systems. Designed as a direct OEM replacement part, this metering device features 1/2" x 1/2" ODF connections and a 30-inch capillary tube for precise superheat regulation. As a veteran technician knows, maintaining the correct refrigerant flow is critical to preventing evaporator flooding or compressor slugging; the 52W76 achieves this by sensing suction line temperature via its bulb and adjusting the internal orifice in real-time. This thermal expansion valve is built with a rugged brass body to withstand high-pressure environments common in industrial and commercial HVACR applications. When swapping a stuck TXV, the 1/2" sweat (ODF) configuration ensures a secure, leak-free braze joint. For contractors troubleshooting starving coils or hunting issues, this 5-ton TXV provides the reliability needed for Lennox heat pumps and air conditioning units, ensuring the system hits its target subcooling and cooling efficiency benchmarks without the risks associated with non-genuine parts.
Key Benefits for HVACR Professionals
- Precision Metering: Accurately controls R-410A expansion to maintain optimal superheat and prevent evaporator icing.
- Universal Fit: Standard 1/2" x 1/2" ODF sweat connections simplify installation in various 5-ton setups.
- Extended Reach: The 30" capillary tube offers flexibility for bulb placement on larger suction lines.
- OEM Compatibility: Specifically designed for Lennox HVAC systems to ensure matched performance with original equipment specifications.
- Durable Construction: Heavy-duty brass housing resists corrosion and pressure spikes in demanding refrigeration cycles.
Common Questions & Technical Insights
How do I diagnose a failing Lennox 52W76 TXV?
Usually, you'll see low suction pressure and high superheat if the valve is stuck closed (starving). If it’s stuck open (flooding), you’ll see high suction pressure and near-zero superheat. Always check your liquid line filter drier for a temperature drop first to rule out a restriction before condemning the valve.
What is the correct sensing bulb placement for this 5-ton valve?
On suction lines 7/8" or larger, the bulb should be mounted at the 4 or 8 o’clock position. For lines smaller than 7/8", 12 o’clock is standard. Ensure the bulb is insulated and tight against clean copper to prevent false readings from ambient air.
Can this valve be field-adjusted?
While some valves have an adjustment stem, we recommend using the factory settings for most Lennox 52W76 applications. If the system is hunting excessively, verify your subcooling at the liquid line before attempting any mechanical adjustments.
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.
