
York S1-9951-1801 Orifice
The York S1-9951-1801 Orifice is a precision-engineered fixed bore metering device designed for specific residential and light commercial HVAC applications. Featuring a .180" orifice size (Sz15), this component is critical for maintaining accurate refrigerant flow control within the evaporator coil. As a genuine OEM replacement part, it ensures proper pressure drops across the liquid line, optimizing heat exchange efficiency in York, Coleman, and Luxaire systems. Contractors rely on the S1-9951-1801 for its consistent bore diameter and high-grade brass construction, which resists debris buildup and corrosion. When troubleshooting cooling performance issues or performing a coil replacement, verifying the HVAC orifice diameter is essential for preventing compressor flooding or evaporator starving. This metering piston provides a reliable solution for systems specifically designed for fixed-flow regulation, ensuring the system operates within calibrated thermal parameters for consistent cooling output.
Key Technical Benefits
- Precise Refrigerant Metering: The .180" bore is machined to tight tolerances to ensure stable superheat levels under standard operating conditions.
- OEM Compatibility: Specifically designed for York S1-9951-1801 applications, ensuring a perfect seat within the distributor assembly.
- Durable Construction: High-quality brass material prevents erosion at high refrigerant velocities, maintaining the integrity of the metering orifice over years of service.
- Standardized Fit: The Sz15 designation allows for rapid field identification and replacement during scheduled maintenance or system repairs.
Common Questions
What systems are compatible with the S1-9951-1801?
This orifice is typically used in specific York and Johnson Controls outdoor units and evaporator coils. Always consult the unit nameplate or technical service manual to confirm the required piston size for your specific tonnage and SEER rating.
Can this orifice be used for both R-22 and R-410A systems?
While the physical orifice housing may be similar, the flow rate is strictly determined by the .180" diameter. You must verify that this bore size matches the specific refrigerant type and capacity requirements of the equipment being serviced.
How do I identify the size of the existing orifice?
Most York orifices, including the S1-9951-1801, have the size stamped directly on the side of the piston. If the stamp is unreadable, a drill bit gauge or micrometer can be used to verify the .180" measurement.
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: $20.21
-65%$20.21
$7.07York S1-9951-1801 Orifice
The York S1-9951-1801 Orifice is a precision-engineered fixed bore metering device designed for specific residential and light commercial HVAC applications. Featuring a .180" orifice size (Sz15), this component is critical for maintaining accurate refrigerant flow control within the evaporator coil. As a genuine OEM replacement part, it ensures proper pressure drops across the liquid line, optimizing heat exchange efficiency in York, Coleman, and Luxaire systems. Contractors rely on the S1-9951-1801 for its consistent bore diameter and high-grade brass construction, which resists debris buildup and corrosion. When troubleshooting cooling performance issues or performing a coil replacement, verifying the HVAC orifice diameter is essential for preventing compressor flooding or evaporator starving. This metering piston provides a reliable solution for systems specifically designed for fixed-flow regulation, ensuring the system operates within calibrated thermal parameters for consistent cooling output.
Key Technical Benefits
- Precise Refrigerant Metering: The .180" bore is machined to tight tolerances to ensure stable superheat levels under standard operating conditions.
- OEM Compatibility: Specifically designed for York S1-9951-1801 applications, ensuring a perfect seat within the distributor assembly.
- Durable Construction: High-quality brass material prevents erosion at high refrigerant velocities, maintaining the integrity of the metering orifice over years of service.
- Standardized Fit: The Sz15 designation allows for rapid field identification and replacement during scheduled maintenance or system repairs.
Common Questions
What systems are compatible with the S1-9951-1801?
This orifice is typically used in specific York and Johnson Controls outdoor units and evaporator coils. Always consult the unit nameplate or technical service manual to confirm the required piston size for your specific tonnage and SEER rating.
Can this orifice be used for both R-22 and R-410A systems?
While the physical orifice housing may be similar, the flow rate is strictly determined by the .180" diameter. You must verify that this bore size matches the specific refrigerant type and capacity requirements of the equipment being serviced.
How do I identify the size of the existing orifice?
Most York orifices, including the S1-9951-1801, have the size stamped directly on the side of the piston. If the stamp is unreadable, a drill bit gauge or micrometer can be used to verify the .180" measurement.
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
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Description
The York S1-9951-1801 Orifice is a precision-engineered fixed bore metering device designed for specific residential and light commercial HVAC applications. Featuring a .180" orifice size (Sz15), this component is critical for maintaining accurate refrigerant flow control within the evaporator coil. As a genuine OEM replacement part, it ensures proper pressure drops across the liquid line, optimizing heat exchange efficiency in York, Coleman, and Luxaire systems. Contractors rely on the S1-9951-1801 for its consistent bore diameter and high-grade brass construction, which resists debris buildup and corrosion. When troubleshooting cooling performance issues or performing a coil replacement, verifying the HVAC orifice diameter is essential for preventing compressor flooding or evaporator starving. This metering piston provides a reliable solution for systems specifically designed for fixed-flow regulation, ensuring the system operates within calibrated thermal parameters for consistent cooling output.
Key Technical Benefits
- Precise Refrigerant Metering: The .180" bore is machined to tight tolerances to ensure stable superheat levels under standard operating conditions.
- OEM Compatibility: Specifically designed for York S1-9951-1801 applications, ensuring a perfect seat within the distributor assembly.
- Durable Construction: High-quality brass material prevents erosion at high refrigerant velocities, maintaining the integrity of the metering orifice over years of service.
- Standardized Fit: The Sz15 designation allows for rapid field identification and replacement during scheduled maintenance or system repairs.
Common Questions
What systems are compatible with the S1-9951-1801?
This orifice is typically used in specific York and Johnson Controls outdoor units and evaporator coils. Always consult the unit nameplate or technical service manual to confirm the required piston size for your specific tonnage and SEER rating.
Can this orifice be used for both R-22 and R-410A systems?
While the physical orifice housing may be similar, the flow rate is strictly determined by the .180" diameter. You must verify that this bore size matches the specific refrigerant type and capacity requirements of the equipment being serviced.
How do I identify the size of the existing orifice?
Most York orifices, including the S1-9951-1801, have the size stamped directly on the side of the piston. If the stamp is unreadable, a drill bit gauge or micrometer can be used to verify the .180" measurement.
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.












