Mastercool 96272-MB-E 4-Way Ball Valve Manifold Gauge Set

The Mastercool 96272-MB-E is a professional-grade 4-way manifold gauge set, designed for air conditioning and refrigeration professionals. Compatible with R134a, R404A, R407C, R507A, and R22 refrigerants, this manifold offers exceptional performance with its 3/8" bore for faster refrigerant flow, ensuring efficient charging and recovery. Supplied by Airconspares.com, this robust tool is built to withstand demanding environments.

Key Features

• 3/8" bore for enhanced flow speed during charging and recovery.
• 90° ball valves with quarter-turn operation for easy control, even under high pressure.
• Precision-machined aluminium body for durability and reliability.
• 3 1/8" gauges for low (compound) and high (pressure) sides, calibrated for R134a, R404A, R22, and R507A
• Includes three 180cm ball valve hoses (red, blue, yellow) and one 180cm 3/8" black vacuum hose.
• Auxiliary recovery and vacuum ports for versatile operation.
• Teflon washers ensure smooth valve rotation and leak-free performance.

Applications

The Mastercool 96272-MB-E is ideal for diagnosing, charging, recovering, and vacuuming air conditioning and refrigeration systems. Its intuitive design allows technicians to:

• Measure system pressure to assess A/C performance.
• Add refrigerant via high-side charging.
• Recover refrigerant using a recovery machine.
• Vacuum systems to remove moisture and contaminants.

Operating Instructions

Before use, ensure the manifold is set up correctly and all valves are closed (horizontal to the block). Always wear safety goggles and gloves when handling refrigerants. Key procedures include:

• System Evaluation: Connect blue (low) and red (high) hoses to the A/C system, start the vehicle, and monitor pressures with the A/C on MAX.
• Adding Refrigerant: Connect the black hose to a refrigerant supply, open the REF and HIGH valves, and add a measured amount using a calibrated cylinder or electronic scale.
• Recovering Refrigerant: Connect a recovery machine to the yellow hose, open HIGH, LOW, and VAC valves, and operate the machine until no refrigerant remains.
• Vacuuming: Connect a vacuum pump to the yellow hose, open HIGH, LOW, and VAC valves, and evacuate for 30 minutes. Check for leaks by monitoring the low-side gauge.

Replacement Parts

Keep your manifold in top condition with these replacement parts, available from Airconspares.com:

Part Number	Description
MBL	Compound (low side) 3 1/8" gauge (R134a, R404A, R22, R507A)
MBH	Pressure (high side) 3 1/8" gauge (R134a, R404A, R22, R507A)
91253-E	Blue gauge protector
91503-E	Red gauge protector
95103	Manifold gauge set only, less hoses & couplers
42016	Service hose replacement depressor
42010	Service hose replacement gasket
90336	Shut-off valve female hose replacement gasket

Safety Information

Always follow these precautions:

• Use only with specified refrigerants (R134a, R404A, R407C, R507A, R22).
• Close all manifold valves before connecting or disconnecting hoses.
• Wear safety goggles and gloves to avoid contact with refrigerants.
• Verify A/C ports to avoid connecting to incorrect systems (e.g., fuel injection ports).
• Consult the system flow diagram if unsure about port locations.

Why Choose Mastercool 96272-MB-E?

With its robust construction, user-friendly ball valve design, and compatibility with multiple refrigerants, the Mastercool 96272-MB-E is a trusted choice for HVAC professionals. Its auxiliary ports and high-flow bore make it versatile and efficient, while the included hoses ensure you’re ready to work immediately. Order from Airconspares.com for reliable service and fast UK delivery.