Bard 905-0636 TXV Assembly

The Bard 905-0636 TXV Assembly is a precision-engineered thermal expansion valve designed for specific Bard wall-mount heat pumps and air conditioning units. This HVAC expansion valve is a critical metering device that regulates refrigerant flow into the evaporator coil, ensuring optimal heat transfer and preventing liquid slugging to the compressor. Built for high-reliability in demanding commercial environments, the 905-0636 utilizes a balanced port design to maintain precise superheat control across varying ambient temperatures and load conditions. When performing a Bard unit repair, substituting with OEM components is essential for maintaining factory-specified SEER ratings and system pressure ratios. This assembly is compatible with R-410A refrigerant systems and features a durable construction to withstand the heavy vibration and thermal cycling common in outdoor HVAC applications. For technicians, this replacement TXV ensures a direct-fit installation, reducing bench time and ensuring the refrigeration cycle returns to peak efficiency.

• Precise Superheat Regulation: Maintains the ideal temperature differential to protect the compressor from liquid floodback.
• OEM Compatibility: Engineered specifically for Bard HVAC systems, ensuring correct orifice sizing and pressure drop characteristics.
• R-410A Optimized: Designed to handle the higher operating pressures associated with modern high-efficiency refrigerants.
• Heavy-Duty Construction: Built to resist corrosion and mechanical failure in harsh wall-mount environments.
• Direct Fit: Simplifies the HVAC valve replacement process by matching existing line set configurations.

What are the symptoms of a failing Bard TXV?
Common indicators include improper evaporator frosting, high suction side superheat, and inconsistent cooling capacity despite correct refrigerant charge levels.

Is the 905-0636 compatible with older R-22 Bard units?
No, this assembly is specifically calibrated for R-410A systems. Using this valve in an R-22 system will result in incorrect metering and potential equipment damage.

Does this assembly include the sensing bulb and mounting hardware?
Yes, this is a complete TXV assembly designed for a standard field installation involving the sensing bulb and capillary tube layout.

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.