What burst pressure is required for the high pressure manifold gauge and hose set of R-410A?

• A. 3000 psig
• B. 4000 psig
• C. 5000 psig
• D. 6000 psig

Answer: (B)

When dealing with refrigerants like R-410A, it is essential to ensure that the equipment used can handle the pressures involved safely. R-410A operates at higher pressures than many other refrigerants, and the burst pressure for high-pressure manifold gauges and hoses must be significantly higher than the maximum operating pressure to ensure safety and reliability during servicing.

The correct choice of 4000 psig reflects the required burst pressure for these components. This higher rating is critical because it not only provides a safety margin above the typical operating pressures but also ensures that the equipment can withstand potential surges and accidental over-pressurization without failing.

The other options suggest burst pressures that are either lower than recommended or unnecessarily high for standard servicing tasks. Using gauges or hoses with insufficient burst pressures can lead to potentially dangerous situations, including the risk of rupture, leaks, and injury. Therefore, 4000 psig is the accepted standard for R-410A high-pressure equipment in order to maintain safety and compliance with regulations.