The Johnson Controls SEC99AB-48 is a professional-grade UltraCap Armored Capillary designed for high-reliability pressure connections in commercial refrigeration and air conditioning systems. This assembly features a 48-inch copper capillary with a 0.06-inch internal diameter, providing a small orifice that effectively minimizes pressure pulsation to protect sensitive controls. Built for the field, the armored capillary tubing is encased in a rugged brass sleeve, offering superior resistance to abrasion and vibration-induced wear. This model is engineered with a 1/4" SAE female flare straight fitting on one end and a 90-degree elbow on the other, both equipped with integral Schrader valve depressors for streamlined installation and service. Compatible with all common non-corrosive refrigerants, the SEC99AB-48 armored capillary ensures a leak-free pressure connection with a 600 psig maximum working pressure and a 3,000 psig burst rating. This part is a direct technical equivalent to the SEC99AB-48C, making it a versatile choice for PENN pressure-actuated controls in demanding HVACR environments. Key Benefits Vibration Protection: The brass armor sleeve shields the copper core from mechanical friction and fatigue in high-vibration compressor compartments. System Stability: The 0.06" ID capillary acts as a dampener, smoothing out rapid pressure fluctuations that can cause "chatter" in pressure switches. Leak Prevention: Precision-forged brass nuts and a copper-to-copper internal seal eliminate refrigerant effusion, maintaining system charge integrity. Flexible Routing: The combination of a straight and 90-degree fitting allows for tight-radius bends and clean cable management in crowded mechanical casings. Common Questions Is the SEC99AB-48 compatible with R-410A and R-22? Yes, the Johnson Controls armored capillary is compatible with all common non-corrosive refrigerants, provided the system operating pressure does not exceed the 600 psig maximum working limit. Do I need to install a separate valve depressor? No, this model includes integral Schrader valve depressors on both ends, allowing you to connect directly to 1/4" SAE male flare fittings without additional hardware. Can this be used for oil pressure sensing? While primarily used for refrigerant pressure, the UltraCap series is suitable for any non-corrosive fluid application within its temperature range of -50°F to 350°F, though technicians should verify viscosity compatibility for oil-specific sensing. 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.
