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Red high-side HVAC gauge, 2-3/4 inch dial, 500 psi scale

Dayton

Dayton 4PDK3 High Side Gauge Red 500 psi

SKU CH-Y81D-JRV87

High-side HVAC gauge reads 0-500 psi for R-134A systems, 2-3/4 inch red dial

  • ColorRed
  • High-side pressure reading up to 500 psi
  • Red dial colour for quick visual identification
  • 2-3/4 in diameter face for clear readability
  • Designed for R-134A refrigerant systems
  • 1/8 in connection fits standard manifold gauge sets

High-Side Manifold Gauge for R-134A Systems

This red high-side gauge is designed as a direct replacement for manifold gauge sets used in R-134A air-conditioning service. It provides a clear pressure reading up to 500 psi for diagnostic and charging work.

1/8-Inch Connection Fits Standard Manifold Ports

The gauge threads into a 1/8 in port on compatible manifold bodies, allowing technicians to swap out a damaged or worn unit without replacing the full set. Its red colour coding follows the common convention for high-side identification.

500 psi Scale Limits Use to Subcritical R-134A

The dial range stops at 500 psi, so the gauge cannot display pressures encountered in transcritical CO2 systems or high-temperature R-134A conditions above that threshold. It is also not intended for low-side or compound pressure readings.

Highlights

  • High-side pressure reading up to 500 psi
  • Red dial colour for quick visual identification
  • 2-3/4 in diameter face for clear readability
  • Designed for R-134A refrigerant systems
  • 1/8 in connection fits standard manifold gauge sets

Specifications

BrandDAYTON
ColorRed

Questions about this item

Will the 1/8 in connection on this 500 psi high side gauge need periodic replacement?

The 1/8 in connection is a standard brass fitting; inspect the O-ring seal during each refrigerant service and replace it if wear or leakage appears.

What pressure limit appears first when this gauge runs continuously at high side pressure?

The gauge is rated for a working pressure of 0 to 500 psi; sustained operation at the upper end of this range is the primary limit.

Does the red 2-3/4 in dial generate noticeable heat or noise during all-day HVAC use?

As a mechanical pressure gauge it has no moving electronics, so it produces no audible noise and negligible heat during continuous operation.

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