Ashcroft 662876001415 Vacuum Pressure Gauge 2.5 in Dial Npt

Product Description

The ASHCROFT 662876001415 is an analog vacuum pressure gauge designed for monitoring negative pressure in mechanical systems. It features a 2.5-inch dial face and reads from -30 Hg to 0, making it suitable for vacuum measurement applications in HVAC, plumbing, and industrial service environments. The gauge mounts via a 1/4-inch NPT center back connection and is housed in a steel case for durability in field and shop conditions. Licensed HVAC technicians and plumbers typically install this gauge for system evacuation monitoring, line testing, and pressure diagnostics where vacuum readings are required.

This gauge is suited for residential and light commercial applications where vacuum pressure monitoring is part of routine system service. Common installation scenarios include refrigeration system evacuation verification, plumbing vacuum testing, and process line diagnostics. The center back mount configuration allows the gauge to sit flush against panels or manifolds, keeping the dial face forward-facing for easy reading. Its compact 2.5-inch dial provides clear analog readout without requiring digital instrumentation.

Key Features

• Analog dial reads -30 Hg to 0 for vacuum pressure measurement
• 2.5-inch dial diameter for clear, direct readout
• 1/4-inch NPT center back mount for panel or manifold installation
• Steel case construction for durability in field service conditions
• Compact form factor fits tight equipment spaces

Compatibility

Designed as an OEM-style replacement or service gauge for systems requiring 1/4-inch NPT center back mount vacuum gauges with a 2.5-inch dial face.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Isolate and depressurize the system fully before connecting or disconnecting any gauge. Apply thread sealant rated for the service media to the NPT threads and tighten to the fitting using an appropriately sized wrench — do not over-tighten. Verify the pressure range of the gauge is compatible with the system being tested before placing the gauge in service.