Best Venturi Vacuum Pump Plans

• A Complete refrigerant changing tool kit for R410a, R134a, R134, R134A, R12, R22, R22A, R404A, R407C or R502. Especially designed for Mini-Split and HVAC system.
• [Gauge] Blue gauge (low): 2-1/2" diameter, 0-500 PSI
• Red gauge (high): 2-1/2" diameter, 0-800 PSI. Max working pressure: 800PSI, Burst pressure: 4000PSI.
• [Three Colored Hoses] Brass 'Quick Seal' fittings - 45 degree on one end, straight on the other - providing a leak-free seal. Sets of 60 inch long, 1/4 inch yellow, blue, and red hoses

• Single stage pump using Twin Port Technology for performance like a 2 stage performance
• 1/2" ACME x 1/4" MFL inlet fitting.
• Motor: 115 Volt
• Lightweight, durable construction for easy handling and long-life use.