Value Collection 111CL25VAC Pressure Gauge 2.5 in Npt

Product Description

The VALUE COLLECTION 111CL25VAC is a 2.5-inch dial analog pressure gauge designed for vacuum measurement in mechanical and industrial service applications. It reads from -30 to 0 inches of mercury (Hg) and mounts via a 1/4-inch NPT lower connection, making it straightforward to install in-line or on a panel. The case is constructed from ABS plastic with brass wetted parts and a bronze Bourdon tube. Accuracy is rated at plus or minus 3-2-3 percent of scale. The dry, non-liquid-filled design keeps the unit lightweight at 0.2 pounds and suits installations where fluid ingress from a glycerin fill is not desired.

This gauge is suited for residential and light commercial HVAC, plumbing, and refrigeration service where vacuum or negative-pressure readings are needed. The 1/4-inch NPT lower mount configuration fits a wide range of standard pipe manifolds, tee fittings, and system test ports. It is a practical choice for technicians who need a compact, readable dial gauge for system diagnostics, evacuation monitoring, or process verification.

Key Features

• 2.5-inch dial diameter for clear, at-a-glance vacuum readings
• Vacuum range of -30 to 0 inches Hg with analog Bourdon tube mechanism
• 1/4-inch NPT lower mount for direct pipe or manifold connection
• Brass wetted parts and bronze Bourdon tube for corrosion resistance in common service environments
• ABS case construction — lightweight at 0.2 pounds
• Non-liquid-filled design for simplified handling and installation

Compatibility

Designed as an OEM-style replacement or service gauge for systems with standard 1/4-inch NPT lower-mount gauge ports, including HVAC, plumbing, and light industrial vacuum applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians or plumbers. Isolate and depressurize the system before removing any existing gauge or fitting. Apply thread sealant or PTFE tape to the 1/4-inch NPT male threads before installation and tighten to snug by hand, then wrench-tighten carefully — avoid overtightening ABS-bodied gauges. Verify the system is at zero pressure or vacuum before returning to service and confirm there are no leaks at the connection point.