Ashcroft 95438XLL Pressure Gauge 0-100 Psi 3.5 in Dial

Product Description

The ASHCROFT 95438XLL is an analog industrial pressure gauge designed for continuous pressure monitoring in mechanical, HVAC, plumbing, and process piping applications. The gauge features a 3.5-inch dial with a 0 to 100 psi range and a 1/4-inch MNPT center back mount connection. Accuracy is rated at 1 percent of full scale, making it suitable for system diagnostics and pressure verification tasks. The stainless steel case is constructed from 304/316 stainless steel, and a polycarbonate lens protects the dial face. This gauge is a non-liquid-filled unit, which simplifies installation in environments where vibration is not a primary concern. Licensed technicians and service professionals across multiple trades install this type of instrument as part of system commissioning and troubleshooting workflows.

The 95438XLL is appropriate for residential and commercial installations where a reliable, readable pressure indication is needed at a central panel, manifold, or inline tee. Its center back mount configuration suits panel-mounted or pipe-stub applications where the gauge face must sit flush or perpendicular to a surface. The 1/4-inch MNPT thread is a common connection size across HVAC hydronic systems, compressed air lines, water supply piping, and refrigeration service ports equipped with appropriate adapters. The Series 1009 design meets several international standards, making it usable across a range of regulated environments.

Key Features

• 0 to 100 psi range with analog dial readout
• 1 percent of full-scale accuracy for reliable pressure readings
• 3.5-inch dial diameter for clear visibility at distance
• 304/316 stainless steel case with polycarbonate lens
• 316 stainless steel Bourdon tube for corrosion resistance
• Bronze wetted parts suitable for a wide range of compatible media
• Center back mount with 1/4-inch MNPT thread for straightforward installation

Compatibility

Designed as an OEM-style replacement or new-installation pressure gauge for industrial, commercial, and residential systems requiring a 1/4-inch MNPT center back mount analog gauge rated to 100 psi. Meets CRN, IP54, IP65/NEMA 4, PED, and RoHS standards.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, HVAC technician, or similarly qualified trade professional. Shut off system pressure and depressurize the line completely before removing any existing gauge or fitting. Apply appropriate thread sealant or PTFE tape to the MNPT threads before installation, and tighten to the fitting manufacturer's recommended specification using a properly sized wrench on the gauge hex body, not the case. Do not exceed the gauge's maximum rated pressure, and verify that the process media is compatible with bronze wetted parts and stainless steel internal components before commissioning.