MG-1 – MANIFOLD SET W/ 60″ HOSES (BRASS – R22, R410, R407A)

A manifold gauge set lets you read the high and low pressure sides of an AC or refrigeration system, which is essential for diagnosing charge levels, leaks, and compressor issues. This brass set comes with 60″ hoses and works with R-22, R-410A, and R-407C.

Specs: Forged brass body, 60″ charging hoses, compatible with R-22, R-410A, and R-407C. DiversiTech MG-1.

Replaces: MG-1

Fits: HVAC systems using R-22, R-410A, or R-407C refrigerant.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypeRefrigerant service tool

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• FIELDPIECE
• MG-1
• YELLOWJACKET

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

Will my R-410A gauges work on R-454B or R-32?

Not automatically. A2L refrigerants like R-454B and R-32 need equipment rated for them. Analog manifolds generally need to be A2L-rated sets; digital manifolds often need a software update to carry the A2L pressure-temperature curves. Check what the tool itself is rated for rather than assuming.

Why will my hoses not thread onto an A2L tank?

A2L cylinders use LEFT-HAND (reverse) threads on the valve, so a standard hose will not start. You need the reverse-threaded adaptor. That is a deliberate keying change, not a defective tank.

Does my vacuum pump need to be A2L rated?

For A2L work, yes. A2L-compatible pumps use brushless motors and non-sparking switches because the refrigerant is mildly flammable. The same thinking applies to recovery machines, recovery cylinders and leak detectors - a leak detector built for R-22 is not rated to sniff an A2L.

What is the difference between standard, low-loss and ball valve hose fittings?

Standard fittings vent whatever is in the hose when you disconnect. Low-loss fittings seal as you break the connection so that charge stays in the hose instead of in the air. Ball valve ends give you a positive shut-off at the hose. Low-loss is the minimum worth buying now.

How many hoses do I need?

A three-hose set covers it - low side, high side and the centre line to the tank, vacuum pump or recovery machine. 60 inch is the usual length for residential work.

Do you sell refrigerant itself?

This category is refrigerant tooling - gauges, hoses, pumps and fittings. For refrigerant, come to the counter at 10226 Plano Rd, Suite 104 in Dallas and we will tell you what we have and what you need to buy it.

Do I have to be certified to buy these tools?

The tools, no. Refrigerant itself is a different question and depends on the refrigerant. Ask at the counter.