The Johnson Controls SEC99AA-48 UltraCap Armored Capillary is a high-performance pressure connection designed for demanding refrigeration and air conditioning environments. Engineered with a 0.06-inch internal diameter capillary, this 48-inch assembly excels at minimizing pressure pulsation that can lead to premature failure in standard tubing. The copper capillary tubing is encased in a rugged brass armored sleeve, providing superior resistance to abrasion and vibration-induced wear?critical for maintaining system integrity in high-vibration compressor housings. This model features 1/4" SAE female flare fittings with straight tube angles at both ends, each equipped with an integral Schrader valve depressor to ensure secure access and maintenance. With a maximum working pressure of 600 psi and a wide operating temperature range of -50?F to 350?F, the SEC99AA-48 (identical to SEC99AA-48C) is fully compatible with all common non-corrosive refrigerants, making it a standard choice for PENN pressure-actuated controls in commercial HVACR service. Key Benefits Vibration Resistance: The brass armored sleeve protects the internal copper line from mechanical damage and abrasive friction. Reduced Pulsation: The small 0.06" orifice provides pulsation dampening, protecting sensitive pressure switches and transducers from rapid cycling. Zero Effusion: The high-quality armored capillary tubing construction ensures no refrigerant loss to the environment through the tube walls. Standard Compatibility: Designed for seamless integration with 1/4 inch SAE flare external connectors found on major HVACR pressure controls. Common Questions What is the difference between SEC99AA-48 and SEC99AA-48C? Technically, they are identical; the "C" suffix typically denotes retail or bulk packaging variations but the physical specifications and performance ratings remain the same. Are depressors included on both ends of this capillary? Yes, this specific model features straight fittings with depressors on both ends to facilitate connection to standard 1/4" access ports without removing the valve core. Can this be used with CO2 or high-pressure refrigerants? This product is rated for 600 psi maximum working pressure. Always verify your specific system's peak operating pressures against this limit before installation. 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.
