Ashcroft 94919 Pressure Gauge 30 Psi 3.5 in Npt

Product Description

The ASHCROFT 94919 is an analog pressure gauge designed for monitoring system pressure in plumbing, HVAC, and light industrial applications. It features a 3.5-inch dial face for easy readout, a measurement range of 0 to 30 psi, and a stainless steel case that resists corrosion in demanding service environments. The 1/4-inch NPT center back mount connection allows direct in-line installation into threaded ports on pipes, manifolds, and equipment panels. Accuracy is rated at 1 percent of full scale, providing reliable readings for service and commissioning work. This gauge is not liquid-filled, making it suitable for clean-air and dry-service pressure points.

This gauge fits common trade applications where a compact, readable pressure indicator is needed at a panel, manifold, or equipment connection point. Typical uses include water supply monitoring, low-pressure air systems, hydronic heating loops, and refrigeration or HVAC accessory piping where pressures do not exceed 30 psi. The center back mount orientation keeps the dial face forward and flush against panels or enclosures. Licensed plumbers, HVAC technicians, and pipefitters are the primary installers of this type of instrument.

Key Features

• 0 to 30 psi analog pressure range suitable for low-pressure water, air, and HVAC applications
• 3.5-inch dial diameter for clear, at-a-distance readout
• 1 percent of full-scale accuracy for reliable system diagnostics
• 1/4-inch NPT center back mount for direct in-line threaded installation
• Stainless steel case provides corrosion resistance in wet or harsh service environments
• Non-liquid-filled design appropriate for dry and clean-gas pressure points

Compatibility

Designed as an OEM-style replacement or new-installation gauge for threaded 1/4-inch NPT ports on residential and light commercial plumbing, hydronic, and HVAC piping systems.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Shut down system pressure and depressurize the line before removing or installing any pressure gauge. Apply thread sealant or PTFE tape to the NPT threads before installation and tighten to a snug fit using an appropriate wrench — do not overtighten, as stainless gauge cases can crack under excessive torque. Verify the installed gauge range is appropriate for the system's normal operating pressure before returning the system to service.