Ashcroft 94341XLL Pressure Gauge 0-300 Psi 3.5 in Dial Mnpt

Product Description

The ASHCROFT 94341XLL is an industrial-grade analog pressure gauge designed to measure system pressure from 0 to 300 psi. The gauge features a 3.5-inch dial with a 1/4-inch MNPT lower-mount connection, making it suitable for bottom-entry installations on pipes, manifolds, and equipment panels. The stainless steel case is rated to IP54 and IP65/NEMA 4 for protection against dust and moisture ingress. Wetted parts are 316 stainless steel and the Bourdon tube is also 316 stainless steel, making this gauge appropriate for mildly corrosive media. Accuracy is rated at 1 percent of full scale. The lens is polycarbonate. This unit is dry, with no liquid fill.

The 94341XLL is suited for use in HVAC, plumbing, industrial process, and mechanical utility applications where a reliable, easy-to-read pressure indication is required. The lower-mount MNPT connection allows direct installation into threaded ports on pumps, boilers, compressors, air handlers, and distribution manifolds. The 3.5-inch dial provides clear at-a-glance readability in residential and light commercial mechanical rooms as well as industrial environments. This gauge meets CRN, PED, and RoHS standards and carries IP65/NEMA 4 ingress protection, making it appropriate for wet and outdoor installations.

Key Features

• Pressure range: 0 to 300 psi with analog Bourdon tube design
• 3.5-inch dial diameter for clear readability at installation distance
• 316 stainless steel Bourdon tube and wetted parts for corrosion resistance
• 304/316 stainless steel case rated to IP65/NEMA 4
• 1/4-inch MNPT lower-mount connection for direct pipe or port installation
• Dry (no-fill) construction; compliant with CRN, PED, IP54, IP65/NEMA 4, and RoHS standards

Compatibility

Designed as an OEM-style or direct-replacement industrial pressure gauge for systems using a 1/4-inch MNPT lower-mount port and requiring a 0 to 300 psi measurement range with a 3.5-inch analog dial.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or qualified pipefitter. Isolate and depressurize the system fully before removing any existing gauge or fitting. Apply an appropriate thread sealant to the MNPT threads per the applicable plumbing or mechanical code before tightening. Do not use the gauge body or dial as a wrench surface; apply torque only to the hex of the process connection fitting.