Value Collection 116AL20VAC Vacuum Pressure Gauge 2 in Npt

Product Description

The VALUE COLLECTION 116AL20VAC is a liquid-filled vacuum pressure gauge designed for accurate low-pressure and vacuum monitoring in plumbing, HVAC, and industrial service applications. The gauge features a 2-inch analog dial with a measurement range of -30 to 0 inches of mercury (Hg), making it suitable for vacuum-side readings. Glycerine fill dampens needle vibration and protects the internal Bourdon tube from pressure spikes and pulsation. The stainless steel case and fully stainless wetted parts provide corrosion resistance in wet or chemically active environments. Accuracy is rated at plus or minus 3-2-3 percent of scale. A licensed technician or journeyman plumber installs this gauge.

This gauge is suited for residential and light commercial plumbing, refrigeration, and HVAC vacuum measurement tasks where a compact, corrosion-resistant instrument is needed. The lower-mount, 1/4-inch NPT male connection allows direct inline installation on pipe assemblies, manifolds, or test ports. The glycerine-filled construction makes it a practical choice for systems subject to vibration or pressure fluctuation, such as pump discharge lines or vacuum pump outlet ports.

Key Features

• Vacuum range: -30 to 0 inches Hg with analog dial readout
• Glycerine liquid-filled for vibration and pulsation dampening
• Stainless steel case and stainless steel wetted parts for corrosion resistance
• 2-inch dial diameter for easy field reading
• 1/4-inch NPT lower-mount connection for direct pipe or manifold installation
• Plus or minus 3-2-3 percent of scale accuracy

Compatibility

Designed as an OEM-style replacement or service addition for any plumbing, HVAC, or fluid system requiring a 1/4-inch NPT lower-mount vacuum pressure gauge with a 2-inch dial.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Shut off and depressurize the system fully before removing or installing any gauge. Apply thread sealant tape or pipe dope to the NPT threads per local plumbing code requirements, and do not overtighten, as stainless gauge connections can gall. Verify that the measurement range of -30 to 0 inches Hg is appropriate for the system before installation.