NAVAC NHB1 High-Flow Refrigerant Hose - 3/8" to 1/4" Fittings - 6 Feet Length - 1/2" Internal Diameter - Faster HVAC Evacuation and Recovery - 20 Microns Vacuum

It does what it is supposed to do. Pulls 500 micron fast and holds too.central ac split systems 1 and a half through 5 ton and up with 2 stage 8 cfm vacuum pump and micron gauge.works with manifold too just not as fast.

Used once on my home. Tried previously using old hoses, used manifold gauge set. digital one. The old hoses either are just too small or have leaks or have contamination or permeability. This hose, and a micron gauge at the opposite point, it went pretty quick with a larger pump 9 cfm. Well made at the moment. I'll try it a few more times.

Very well made.

Good quality, all threads good, I love pulling vaccums with this big hose.

I always used my manifold hoses to evacuate but now I dedicated this hose for pulling vacuum's with isolation valves and a Micron gage on the high side. Works a lot faster.

I had paired this with a core removal tool and it’s cut so much time out of pulling a good quality vacuum.

What can I say, I bought this thing because I went wireless for probes, I thought this "1 hose" setup was absolute BS until I swapped a coil and used it. WOW I mean by the time I got my micron gauge to link up to the iPad I was pulling 3000 micron and DROPPING, by the time wtf came out of my mouth and had a double take I was seeing 900's, this is a must for hvac, it did interrupt my plans for lunch though 😆

Muy buena me simplifica el vacío de la unidad baja rápido los micrones

These work great, evacuations are incredible. Well worth it.

Este producto es de muy buena calidad, tiene una conexiones firmes. Cumple con lo que se esperaba. Si se recomienda. Al utilizarla se recomienda verificar los empaques or o' ring.

Perfect for pulling a fast deep vacuum

Donde puedo conseguir los empaques,,ya tengo rato con esta manguera y la.verdad es muy buena pero ya se dañaron los empaques

Ya realice varios vacíos a sistemas de refrigeración y me parece muy excelente antes me duraba 1 hora o hasta 1:20 min en hacer un vacío a 250 micrones ahora lo realizo en 7 min a 10 min máximo, dependiendo de la condición del ambiente, uso una bomba de vacío wipcool de 7 CFM y llave de vacío Navac, los materiales son de excelente calidad el único pero que tal vez tengo en este momento es que no le he conseguidos repuestos de las gomas que sellan (junta teórica)