Bard 5651-131 Expansion Valve

The Bard 5651-131 is a core HVACR component designed for precise refrigerant metering in specialized environmental control systems. This Bard 3/8 x 3/8 Thermal Expansion Valve operates by modulating the flow of liquid refrigerant into the evaporator coil, ensuring stable superheat and preventing compressor slugging. Featuring 3/8 inch ODF connections, this TXV replacement is engineered for a brazed installation, providing a leak-resistant seal in high-vibration wall-mount applications. As a genuine Bard OEM expansion valve (often superseded by the 5651-131BX), it is specifically calibrated for Bard WA and WL series units, maintaining the precise pressure drop required to transition high-pressure liquid into a low-pressure saturated vapor. For technicians diagnosing erratic suction pressures or evaporator icing, installing this factory-spec thermostatic expansion valve restores the system to its original subcooling and superheat design parameters. This mechanical metering device utilizes a reliable power element and diaphragm assembly to react to thermal load changes without the need for complex electronic controllers.

• Precision Refrigerant Control: Maintains optimal superheat to ensure high-efficiency heat transfer and prevent evaporator coil frost.
• Direct OEM Compatibility: Specifically designed for Bard wall-mount air conditioners and heat pumps, including WA701 and WL701 series.
• Durable Brass Construction: High-grade materials resist corrosion and withstand the thermal stresses of frequent cycling.
• Brazed ODF Connections: 3/8" x 3/8" ODF ports ensure a secure, permanent fit suitable for industrial and commercial refrigeration circuits.
• System Protection: Acts as a critical failsafe to protect the compressor from liquid floodback during low-load conditions.

• Is the Bard 5651-131 compatible with R-410A systems? Yes, this thermal expansion valve is calibrated for use in modern Bard refrigerant circuits; always verify the specific tonnage and refrigerant type on the unit nameplate.
• Can I use this TXV to replace a 5651-131BX? The 5651-131BX is the official superseding part number for the 5651-131, meaning they are functionally identical and fully interchangeable for service applications.
• What are the symptoms of a failing Bard expansion valve? Common indicators include "hunting" (fluctuating pressures), low suction pressure with high superheat, or localized icing on the distributor tubes or evaporator inlet.

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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.