Value VHB-1 Big Boy High-Flow Vacuum Evacuation Hose (3/8" - 1/4" SAE, 180 cm)

This is a Value "Big Boy" series high-flow vacuum evacuation hose that eliminates the bottleneck created by standard 1/4" charging hoses when evacuating air conditioning and refrigeration systems. Its large 1/2" inner diameter lets you truly use the capacity of your vacuum pump; technicians and service companies reach a deeper vacuum in less time with the same pump.

Fast Evacuation with Large 1/2 Inch Diameter, 20 Micron Vacuum Rating

Key Technical Specifications and Field Advantages

• Large 1/2" Inner Diameter: Significantly reduces flow resistance compared to standard charging hoses and shortens evacuation time; makes a difference in large-volume VRF and commercial systems.
• 20 Micron Vacuum Rating: Can be used reliably for deep vacuum work; the hose keeps its shape under vacuum.
• 4-Layer Construction: Provides low permeation, minimizing the ingress of outside air and moisture during evacuation.
• High Pressure Rating: 640 psi working, 3200 psi burst pressure — values are printed on the hose.
• Wide Refrigerant Compatibility: Suitable for use with R12, R134a, R22, R404A and R410A (printed on the hose).
• Brass SAE Fittings: With 3/8" - 1/4" SAE connection ends, it creates a direct, leak-tight line between the vacuum pump and the service port.

Technical Specifications

• Brand and Model: Value / VHB-1 (Big Boy series)
• Type: High-flow vacuum evacuation hose (evacuation hose)
• Length: 180 cm
• Hose Diameter: 1/2"
• Connection: 3/8" - 1/4" SAE (brass fitting)
• Working Pressure: 640 psi / Burst Pressure: 3200 psi
• Vacuum Rating: 20 micron
• Construction: 4-layer low-permeation design
• Refrigerant Compatibility: R12, R134a, R22, R404A, R410A

Technician Tips

• For the best evacuation performance, Value recommends using this hose together with the VCR1 valve core removal tool; when the valve core is removed, flow resistance drops and evacuation time is noticeably shortened.
• Connect the 1/4" SAE end to the system service port and the 3/8" end to the vacuum pump inlet.
• For service companies with a 1/2" pump inlet, the VHB-2 model (1/2" - 1/4" SAE) of the same series is available.