Ashcroft 93754XLL Pressure Gauge 0-400 Psi 4.5in Rear Flange

Product Description

The ASHCROFT 93754XLL is a process industrial pressure gauge designed for demanding commercial and industrial applications. It features a 4.5-inch analog dial with a measurement range of 0 to 400 psi and delivers 0.5% of scale accuracy, making it suitable for systems where precise pressure monitoring is critical. The gauge uses a 1/4-inch MNPT rear connection and mounts via a rear flange configuration. Stainless steel wetted parts resist corrosion in harsh process media, while the aluminum case keeps overall weight low at 2.5 pounds. A glass lens provides a clear, durable display face. Licensed HVAC technicians, process pipefitters, and industrial plumbers typically specify and install this gauge.

This gauge is used in process piping, industrial fluid systems, compressed air lines, and hydraulic circuits where a rear-flange panel-mount configuration is required. The rear flange mount allows direct panel or bulkhead installation with a clean front-face appearance. The no-fill, dry-service design means no glycerin or silicone fill is present, which suits environments where fill-fluid leakage is a concern. It is rated to IP66 and NEMA 4X standards, confirming suitability for washdown, outdoor, and corrosive-atmosphere installations. CRN certification supports use in Canadian pressure vessel and piping systems where provincial registration is required.

Key Features

• 0 to 400 psi measurement range with 0.5% of scale accuracy
• 4.5-inch analog dial for easy readability at distance
• Stainless steel wetted parts for corrosion resistance in aggressive media
• Rear flange mount for clean panel or bulkhead installation
• IP66 and NEMA 4X rated for washdown and outdoor environments
• CRN certified for Canadian pressure system compliance
• Dry service (no liquid fill) eliminates fill-fluid contamination risk

Compatibility

Designed as an OEM-style process gauge for industrial and commercial pressure monitoring applications requiring a 1/4-inch MNPT rear connection with rear flange mounting. Part of the ASHCROFT 1379 series.

Installation Notes

Installation is typically performed by a licensed pipefitter, industrial plumber, or qualified HVAC technician. Depressurize and isolate the system before removing any existing gauge or fitting. Apply appropriate thread sealant to the 1/4-inch MNPT threads per site or code requirements, and tighten using a wrench on the gauge hex fitting — do not apply torque through the case body. Verify the process medium and pressure range are within the gauge specifications before returning the system to service.