Shopping Cart

Your cart is empty.

Your cart is empty.

Navac Big Boy High-Flow Refrigerant Hose, Black, 6', 1/2' Diameter, 1/2' to 1/4' Fitting (NHB2)

5.0 (9) Write Review
Free shipping on orders over $29.99

$77.28

$ 35 .99 $35.99

In Stock

About this item

  • Fast recovery and evacuation: NAVAC NHB2 Refrigerant hose has a 1/2 inch internal diameter for faster evacuation and recovery of an HVAC system. It is 6 feet long and black in color.
  • Reliable HVAC Hose: The NHB2 High-flow Refrigerant Hose can withstand 3200 psi burst pressure and operates at 640 psi working pressure.
  • Safe and efficient: NHB2 Hose is made with a 4-layer construction for low permeation. This ensures that refrigerants don’t escape into the atmosphere during the process.
  • Essential HVAC Tool: This hose connects 1/2" fittings to 1/4“ fittings. Technicians use this to perform refrigerant recovery and pull the vacuum from an HVAC system. It is vacuum-rated to 20 microns.
  • Encouraging smart work: We want the tools in your NHB2 Refrigerant Hose to last as long as they can, which is why we are offering a 1-year warranty. NAVAC always wants to empower you to work smarter!


The NAVAC NHB2 Refrigerant Hose features a 1/2-inch large internal diameter and is 6 feet in length. Made with 4-layer construction for low permeation to ensure refrigerants don’t escape into the atmosphere during the process. It is a refrigerant hose that connects 1/2-inch fittings to 1/4-inch fittings. Technicians use this hose to recover refrigerant and pull the vacuum quickly and efficiently from an HVAC system. It is a powerful HVAC hose that can withstand 3200 psi burst pressure and operates at 640 psi working pressure. It is vacuum-rated to 20 microns.


Palisades_People
2025-08-26 14:17:18
I will second the review by Thegun98. I bought this looking for a vacuum rated hose with 1/2” diameter hose, 1/2” female flare connector on one end for attachment to one manifold port on my Robinair 6CFM vacuum pump and 1/4” female flare in the other end for attachment to the suction line on my AC compressor unit. I was having a hard time finding such a hose as most are 3/8” flare fittings, but not this one. Even though the listing description is lacking the detail I was hoping to find, I ordered based on Thegun98’s review and was glad to see what showed up is exactly what I was looking for. 1/2” hose with one 1/2” FL on one end and 1/4” FL on the other end.
Shankton53
2025-06-23 17:05:04
If you have a vacuum pump with a 1/2 inch fitting, I hiighly recommend this hose. Wider diameter hoses really do pull a vacuum much faster than thinner ones.
Jeremy Crutchfield
2025-06-10 16:14:16
This the big boy for big deep evacuation times
B buy and sell gold
2025-04-25 12:52:31
I got what i payed for.
Lorena Dattellis
2025-04-18 19:01:46
La tercera ves que la iba a usar y una de las puntas me quedó en la mano , yo si noté de que me costaba hacer un vacío y era eso de que la manguera o vino defectuosa o son malas ☹️🙃🤐
Demetrio
2025-03-07 12:13:16
I’m giving 4 starts because my 1/4” female fitting is missing a gasket. Took me awhile to figure out why it wasn’t pulling below 2500 microns. Hooked it up direct to my micron gauge and to my pump and it wouldn’t pull down below 100microns. Come to find I’m a gasket less. Overall the product is durable and solid quality.
alissa burrola
2025-01-25 14:26:43
Good hose for pulling vacuum.
Thegun98
2024-12-05 12:47:36
glad to have found a 1/2" fl tp 1/4" fl evacuation hose. Seems most other ones are usually 3/8".
CKelly
2024-11-22 10:11:29
Used on a VRF system install with over 150' of piping. Pulled vacuum faster than any hoses I've used. Awesome.