JB K1-3 3/4" NPS x 3/8" Male Flare Drum Adapter

The JB Industries K1-3 is a professional-grade refrigerant drum adapter engineered for high-pressure fluid transfer from 3/4" NPS cylinder valves. Built from premium American-made brass (C36000/C37000), this fitting converts a 3/4" NPS female pipe connection to a 3/8" male flare (SAE 45?), ensuring a leak-proof seal with standard HVACR charging hoses. Unlike imported alternatives, the K1-3 features heavy-duty forged brass construction capable of handling vacuum and pressures up to 5,000 PSI, depending on the application environment. Each adapter includes a fiber gasket for immediate seating on cylinder ports. For technicians managing large-scale refrigerant recovery or system charging, the K1-3 provides the high-tensile strength required to prevent cracking under high-torque conditions. This HVAC brass fitting conforms to strict SAE J513 standards, making it a reliable staple for your service truck when adapting large refrigerant cylinders to 3/8" lines.

• High-Pressure Rated: Engineered to withstand up to 5,000 PSI, making it suitable for both high-pressure refrigerants and deep vacuum applications.
• Corrosion-Resistant Brass: Machined from high-copper content brass to prevent oxidation and ensure long-term durability in the field.
• Precision Threading: Features long, dry-seal pipe threads for maximum clearance and a secure, vibration-resistant fit.
• Versatile Compatibility: Designed for use with copper, brass, aluminum, and steel tubing across various refrigeration and hydraulic systems.
• Field Ready: Packaged with a dedicated fiber gasket to eliminate the need for additional sealants at the NPS connection point.

• What is the difference between NPS and NPT for this adapter? This adapter utilizes 3/4" NPS (National Pipe Straight) threads, which are designed for mechanical joining on cylinder valves, whereas NPT (Tapered) relies on thread interference. Always use the included gasket for NPS connections.
• Can this be used with R-410A systems? Yes, the K1-3 is compatible with R-410A and other common refrigerants, provided the pressure ratings of the attached hoses and components are observed.
• Does this fitting support vacuum pump connections? Absolutely. The high-quality machining ensures it maintains a tight seal during evacuation, preventing moisture ingress or vacuum loss.

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.