Ashcroft 351009A02LLL800 Pressure Gauge 0-800 Psi

Product Description

The ASHCROFT 351009A02LLL800 is an analog pressure gauge designed for industrial and mechanical service applications. It features a 3.5-inch dial for easy readability, a 0 to 800 psi pressure range, and a 1/4-inch lower-mount NPT connection. The case is constructed from stainless steel for corrosion resistance, while the wetted parts are bronze, making it suitable for a wide range of compatible media. Accuracy is rated at 1 percent of full scale. This gauge is a dry (no-fill) unit, meaning it contains no liquid dampening fluid, keeping it lightweight and straightforward to install in standard pressure monitoring applications.

This gauge is well suited for HVAC, plumbing, compressed air, hydraulic, and general industrial systems where reliable static pressure indication is required. The lower-mount configuration allows direct in-line installation on pipe manifolds, test ports, or panel-mounted fittings. The 3.5-inch dial size is a common fit for equipment rooms, mechanical panels, and service rigs where technicians need a clear pressure reading at a glance. Licensed plumbers, HVAC technicians, and pipefitters are the typical installers for gauges of this type.

Key Features

• 0 to 800 psi pressure range suitable for high-pressure service applications
• 3.5-inch analog dial for clear, at-a-glance pressure readings
• Stainless steel case provides corrosion resistance in demanding environments
• Bronze wetted parts compatible with a broad range of process media
• 1 percent of full-scale accuracy for reliable pressure monitoring
• Dry no-fill design keeps weight low and simplifies installation

Compatibility

Designed as an OEM-style replacement or direct-install analog pressure gauge for systems requiring a 1/4-inch lower-mount NPT connection and a 0 to 800 psi range.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Always depressurize and isolate the system before removing an existing gauge or installing a new one. Apply thread sealant or PTFE tape to the male NPT threads per standard practice, and hand-tighten before using a wrench to avoid over-torquing the brass fitting threads. Verify that the gauge pressure range and wetted-parts material are appropriate for the system media and operating pressure before placing the system back in service.