Overview
The Johnson Controls SEC99AA-48C is a high-performance UltraCap armored capillary tube assembly designed for use as a reliable pressure connection in demanding commercial refrigeration and air conditioning applications. It connects pressure-actuated controls, such as the PENN line, to HVACR components while effectively minimizing pressure pulsations that can lead to premature tubing or control failure. The assembly features a copper capillary line protected by a rugged brass armor sleeve, ensuring excellent durability against vibration-induced wear, mechanical damage, and abrasion.
Features
- UltraCap armored capillary design provides superior mechanical protection and a long service life.
- Copper capillary tubing prevents the effusion or leakage of refrigerants into the environment.
- Small internal orifice offers built-in pulsation dampening to protect sensitive switches and transducers.
- Equipped with a brass armored sleeve that delivers high resistance to vibration and abrasive friction.
- Dual straight connection configuration simplifies alignment and routing during installation.
Specifications
- Length: 48 inches (1,219 mm)
- Capillary Diameters: 0.062 in. (1.5 mm) Inside Diameter; 0.125 in. (3 mm) Outside Diameter
- Connection Size and Type: 1/4 inch SAE Female Flare connectors on both ends
- Tube End Angles: Two straight fittings
- Depressor: Includes an integral breakaway Schrader valve depressor on one end
- Maximum Working Pressure: 600 to 690 psi
- Burst Pressure: 3,000 psig
- Operating Temperature Range: -50°F to 350°F (-46°C to 177°C)
- Materials: Copper internal tubing with a brass armor sleeve and forged brass nuts
- Refrigerant Compatibility: Suitable for use with all common non-corrosive refrigerants
- Agency Listings: UL Recognized (File SA9457, CCN SFCS2 / SFCS8 for Canada)
Applications
The SEC99AA-48C is engineered for connecting pressure controls, switches, and sensing systems in commercial HVACR environments. It is ideal for high-vibration areas, such as compressor housings, where standard copper lines are prone to cracking or rubbing. The 1/4-inch SAE female flare fittings ensure seamless integration with industry-standard refrigeration access valves and controls, making it a preferred option for both new system installations and field service replacements.


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