Ashcroft 662876000500 Pressure Gauge 2 in Npt Center Back

Product Description

The ASHCROFT 662876000500 is an analog vacuum pressure gauge designed for measuring negative pressure in HVAC, plumbing, and general mechanical systems. It features a 2-inch steel-case dial with a center back mount and a 1/4-inch NPT threaded connection. The gauge reads from -30 to 0 inches of mercury (Hg), making it suitable for vacuum monitoring applications. The steel case offers durability in typical service environments. Licensed HVAC technicians and plumbers are the primary installers for this type of instrument gauge.

This gauge is suited for residential and light commercial applications where vacuum or negative pressure monitoring is required. Common install scenarios include suction line monitoring, vacuum pump testing, and low-pressure system diagnostics. The center back mount configuration allows for panel or bulkhead mounting where a flush or recessed instrument installation is needed. The 1/4-inch NPT thread is a widely used connection size across HVAC and plumbing service ports.

Key Features

• Reads vacuum range from -30 to 0 inches Hg via analog dial
• 2-inch dial diameter for clear field readability
• 1/4-inch NPT center back mount for panel or bulkhead installation
• Steel case construction for durability in mechanical service environments
• Compact form factor at 0.4 pounds for easy handling

Compatibility

Designed as an OEM-style replacement or service gauge for residential and commercial HVAC, plumbing, and mechanical systems requiring 1/4-inch NPT center back mount vacuum instrumentation.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Isolate and depressurize the system fully before removing or installing any pressure gauge. Apply thread sealant tape to the NPT threads per standard practice, taking care not to over-torque the fitting into the port. Verify that the system vacuum range does not exceed the gauge maximum rating of -30 inches Hg.