Ashcroft 94335XLL Pressure Gauge 0-15 Psi 3.5in Dial Mnpt

Product Description

The ASHCROFT 94335XLL is an analog industrial pressure gauge designed for accurate pressure monitoring in demanding service environments. It features a 3.5-inch dial with a 0 to 15 psi range and delivers 1% of scale accuracy. The case is 304/316 stainless steel and all wetted parts are stainless steel, making this gauge suitable for corrosive media and harsh ambient conditions. The Bourdon tube is 316 stainless steel. The gauge is not liquid-filled, uses a polycarbonate lens, and connects via a 1/4-inch MNPT lower-mount fitting. Licensed HVAC technicians, plumbers, and mechanical contractors install this gauge where a reliable, corrosion-resistant pressure indication is required.

This gauge is suited for residential and light commercial mechanical systems, industrial process lines, and utility piping where pressures do not exceed 15 psi. Lower-mount configuration positions the connection at the bottom of the case, which is standard for panel or pipe installations where the process connection is below the dial face. The no-fill design avoids complications with fill fluid compatibility or temperature-related expansion in typical low-pressure applications.

Key Features

• 3.5-inch analog dial with 0 to 15 psi range and 1% of scale accuracy
• 316 stainless steel Bourdon tube and stainless steel wetted parts for corrosion resistance
• 304/316 stainless steel case rated for IP54 and IP65/NEMA 4 environments
• 1/4-inch MNPT lower-mount connection for standard pipe thread installation
• Polycarbonate lens provides impact and chemical resistance
• Certified to CRN, PED, and RoHS standards

Compatibility

Designed as an OEM-style or direct replacement industrial pressure gauge for low-pressure mechanical, process, and utility piping systems requiring a 1/4-inch MNPT lower-mount connection and a 3.5-inch dial.

Installation Notes

Installation is typically performed by a licensed plumber or mechanical contractor in accordance with applicable local codes and ASME B40.100 gauge installation guidelines. Isolate and depressurize the system before removing or installing the gauge. Apply thread sealant to the MNPT threads per local code requirements and tighten only to the fitting hex — do not apply torque to the gauge case. Verify the process media is compatible with stainless steel wetted parts before placing the gauge in service.