Ashcroft 94336 Pressure Gauge 30 Psi 3.5 in Dial Npt

Product Description

The ASHCROFT 94336 is an analog pressure gauge designed for monitoring system pressure in plumbing, HVAC, and industrial fluid systems. It features a 3.5-inch dial for easy readability and a lower-mount 1/4-inch NPT connection for direct installation into a pipe or manifold. The gauge reads from 0 to 30 psi with 1% of scale accuracy, making it suitable for applications where reliable, straightforward pressure indication is required. The stainless steel case provides corrosion resistance in demanding service environments. This gauge is not liquid-filled, making it appropriate for stable, low-vibration installations. Licensed plumbers, HVAC technicians, and mechanical contractors are the typical installers.

The ASHCROFT 94336 is used in residential and light commercial applications where low-range pressure monitoring is needed. Common install scenarios include water supply lines, boiler systems, air compressor outlets, and HVAC hydronic loops where system pressure must be continuously monitored. The lower-mount NPT connection allows direct vertical installation on pipe tees, manifold ports, or equipment pressure taps. The 3.5-inch dial size makes it practical for panel or wall-adjacent installations where readability at a short distance is important.

Key Features

• 0 to 30 psi pressure range suitable for low-pressure water and air systems
• 1% of scale accuracy for reliable pressure indication
• 3.5-inch analog dial for clear, at-a-glance readings
• 1/4-inch lower-mount NPT connection for standard pipe fitting compatibility
• Stainless steel case provides corrosion resistance in wet or humid environments
• Non-liquid-filled design appropriate for low-vibration, stable service conditions

Compatibility

Designed as a standard replacement or new-installation pressure gauge for systems using 1/4-inch NPT lower-mount connections with pressure ranges up to 30 psi.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or mechanical contractor. Before installing or removing the gauge, isolate the section of pipe or equipment and relieve all system pressure. Apply thread sealant tape or compound to the NPT threads per standard trade practice and local code requirements. Do not use pliers or a pipe wrench directly on the gauge dial housing; use a wrench only on the hex fitting at the base to avoid damaging the case or internal movement.