What is this gauge set used for?

Evacuation, diagnostic pressure checks, and R134a or R404a charging and recovery on auto and domestic AC systems. It reads low and high side pressures through two color-coded gauges.

Does it work on R1234yf systems?

No. It is set up for R134a and R404a, and the quick couplers fit standard R134a service ports. R1234yf needs different couplers and typically different gauge scales.

The 3-way manifold with two gauges, three 5 ft color hoses, red and blue adjustable R134a quick couplers, a piercing can tap, a self-sealing can tap, an ACME adapter, a spare valve core kit, instructions and a blow-molded case.

What do the gauge ranges mean?

The blue low-pressure gauge reads -30 inHg to 250 PSI, enough to show vacuum during evacuation. The red high-pressure gauge reads 0 to 500 PSI for discharge-side checks.

Do I still need a vacuum pump?

Yes, for evacuation. The set provides the manifold, gauges and hoses, but a vacuum pump and a refrigerant scale are separate tools for a full service.

How do the quick couplers attach?

They lock onto standard R134a service ports with ball bearings; blue goes on the low-side suction port and red on the high-side discharge port. Twist the knob clockwise to open and anticlockwise to close.

3-Way AC Manifold Gauge Set Price History: Lowest $63.06 at GarageNest

Q: Where is the AC Manifold Gauge Set, 3 Way Car HVAC R134a R404a Refrigerant Charging Tool Kit cheapest?

At GarageNest, for $63.06, as of our latest check.

Q: What do buyers say about the AC Manifold Gauge Set, 3 Way Car HVAC R134a R404a Refrigerant Charging Tool Kit?

Buyers like: Practical, useful tools for regular vehicle maintenance; Descriptions make it easy to compare options; Easy to store and organize in the garage.

What reviewers say

Buyers call it a practical, useful set for regular vehicle maintenance and say it is straightforward for routine checks and small projects. They like that it stores neatly in the garage.

What people mention

Ease of usePraisedBuyers say it is straightforward to use for routine checks and small projects.
StoragePraisedOwners like that it stores and organizes easily in the garage.
ValuePraisedBuyers describe it as a practical, useful tool for regular vehicle maintenance.

From GarageNest

3-way, 2-valve manifold gauge set for auto and domestic AC evacuation, diagnostic checks, R134a/R404a charging and recovery
2-3/4" two-color gauges with color scale: blue low pressure -30 inHg to 250 PSI, red high pressure 0 to 500 PSI
Visual window on the corrosion-resistant brass manifold for monitoring charging and recovery
Three 5 ft color hoses with rubber resin and built-in nylon: 600 PSI max working pressure, 3000 PSI burst
Adjustable R134a quick couplers in brass and aluminum with ball bearings, compatible with standard R134a service ports
Includes piercing and self-sealing R134a can taps, ACME adapter, spare valve core kit, instructions and blow-molded case

Materials: Aluminum, brass, plastic, rubber
Returns: Eligible unused and uninstalled products may generally be returned within 30 days of delivery with original packaging, components, manuals and accessories; prio
Shipping: Orders generally processed within 1–3 business days (up to 5 in busy periods); estimated US delivery 5–10 business days after processing, international 10–20 bu
In the box: 3-way manifold gauge set, Three 5 ft color hoses, Red and blue adjustable R134a quick couplers, Piercing-type R134a can tap, Self-sealing-type R134a can tap, ACME adapter

About the AC Manifold Gauge Set, 3 Way Car HVAC R134a R404a Refrigerant Charging Tool Kit

This 3-way, 2-valve manifold gauge set is for automotive and domestic air conditioners. It is used for evacuation (vacuum), diagnostic checks, and R134a and R404a refrigerant charging and recovery. The brass manifold is corrosion resistant and has a visual window for monitoring refrigerant charging and recovery.

The two 2-3/4" gauges are two-color with a color scale. The blue low-pressure gauge reads -30 inHg to 250 PSI. The red high-pressure gauge reads 0 to 500 PSI. Three 5 ft color hoses are made of rubber resin with built-in nylon. They have 1/4" female brass fittings on each end. The yellow hose connects the middle charging port to a can tap or recovery unit.

The adjustable R134a quick couplers are brass and aluminum and lock with ball bearings. They fit standard R134a service ports. Blue is for the low-side suction port and red is for the high-side discharge port. Turning the knob clockwise opens the coupler and counterclockwise closes it. The kit includes a piercing-type and a self-sealing R134a can tap, each with a 1/2" ACME female thread. It also has an ACME adapter, spare valve core accessories, instructions, and a blow-molded case.

Type: 3-way, 2-valve manifold gauge set
Refrigerants: R134a, R404a
Gauge size: 2-3/4" two-color gauges with color scale
Low-pressure gauge: Blue, -30 inHg to 250 PSI
High-pressure gauge: Red, 0 to 500 PSI
Manifold: Corrosion-resistant brass with visual window
Hoses: Three 5 ft color hoses, rubber resin with built-in nylon, 1/4" female brass fittings
Hose pressure: 600 PSI max working pressure, 3000 PSI bursting pressure
Quick couplers: Adjustable R134a, brass and aluminum, red (high side) and blue (low side)