Yellow Jacket manifold gauge set HVAC 4-hose with 3/8" vacuum port, 5 ft hoses, forged aluminum body and sight glass

Yellow Jacket’s 4‑hose manifold gauge set is a lightweight, forged‑aluminum HVAC charging and diagnostic tool with a large 3/8" vacuum port to speed evacuation and a fourth hose for simultaneous tank or pump connections.

Engineered for technicians who move between service calls, this Yellow Jacket manifold combines a durable yet light forged aluminum body with color‑coded controls, a sight glass for refrigerant observation, and an exclusive in‑line 100 mesh filter to protect internal seats. The integrated fourth hose and the larger 3/8" vacuum port simplify evacuation, charging, and recovery tasks without repeatedly swapping fittings, cutting downtime and improving workflow on systems using common refrigerants.

How does the 3/8" vacuum port improve evacuation time?

The larger diameter vacuum port accepts bigger hose lines, increasing flow capacity during pumpdown and evacuation. By reducing resistance compared with smaller ports, it achieves faster deep vacuum levels and shortens total pump runtime.

• 3/8" port compatible with larger vacuum hoses for higher flow
• Can reduce evacuation time by up to roughly one‑third on many systems
• Less pump runtime means lower wear and quicker job completion

Why is the fourth hose useful for technicians in the field?

The fourth hose allows one connection to a refrigerant tank, recovery unit or vacuum pump while keeping the usual high/low service lines attached. This eliminates repetitive hose changes during diagnostic, evacuation, and charging steps, preserving seals and speeding service cycles.

• Enables simultaneous connection to tank or recovery equipment
• Minimizes hose swaps and potential contamination
• Improves efficiency when switching between recovery, vacuum, and charge modes

What durability and protection features does this set offer?

The body is forged from aluminum alloy to balance low weight with ruggedness for daily use. In addition, sealed piston construction, an exclusive 100 mesh in‑line filter on flare fittings, and optional protective gauge boots extend the tool’s service life and reduce maintenance needs.

• Forged aluminum alloy body: durable and easy to handle
• Double O‑ring piston for long‑term seal reliability
• 100 mesh in‑line filter on flare fittings to block particulates
• Optional boots available to protect gauges from impact

How does the sight glass and color coding help during charging?

The integrated sight glass lets you observe refrigerant flow and identify oil or moisture indications while charging or recovering. Color‑coded handles and hoses reduce setup errors and speed identification of high/low service lines under jobsite conditions.

• Sight glass shows refrigerant condition and movement during service
• Color coding provides quick high/low recognition for safe connections
• Contoured easy‑grip handles improve control when operating valves

Who is this for? HVAC service technicians, refrigeration specialists, and contractors who want a reliable, portable manifold that reduces downtime and simplifies multi‑step procedures will appreciate this Yellow Jacket 4‑hose set. It’s especially useful for professionals who perform frequent evacuations and charges and need a tool that balances durability, speed, and ergonomic handling for daily field use.