Ashcroft 601379SS04LXLL30IMV300 Compound Pressure Gauge

Product Description

The ASHCROFT 601379SS04LXLL30IMV300 is an analog compound pressure gauge designed for measuring both vacuum and positive pressure in a single instrument. It features a 6-inch dial with a range of -30 to 300 psi and delivers 0.5% of scale accuracy, making it suitable for applications where precise pressure monitoring is required. The aluminum case keeps overall weight low at 3.13 pounds, while stainless steel wetted parts provide corrosion resistance in contact with process media. This gauge is installed by licensed plumbers, HVAC technicians, pipefitters, and industrial maintenance professionals.

This gauge is suited for residential and commercial HVAC systems, plumbing and hydronic systems, compressed air lines, and light industrial process piping where both vacuum and positive pressure readings are needed at a single measurement point. The lower-mount configuration with a 1/2-inch thread connection allows direct installation into pipe taps, manifolds, or system test ports. The non-liquid-filled design keeps the instrument straightforward for standard dry-service environments.

Key Features

• Compound pressure range: -30 to 300 psi, readable on a single analog dial
• 0.5% of scale accuracy for reliable process monitoring
• 6-inch dial diameter for clear readability at a distance
• Stainless steel wetted parts resist corrosion from process media
• Aluminum case reduces overall instrument weight
• Lower-mount, 1/2-inch threaded connection for direct pipe installation
• Non-liquid-filled construction suitable for standard dry-service applications

Compatibility

Designed as an OEM-style or replacement analog compound pressure gauge for HVAC, plumbing, hydronic, compressed air, and light industrial piping systems requiring a lower-mount, 1/2-inch threaded connection with a 6-inch dial.

Installation Notes

Installation should be performed by a qualified technician. Depressurize and isolate the system completely before removing any existing gauge or fitting. Apply thread sealant or PTFE tape appropriate for the service media to the 1/2-inch male threads before installation. Do not overtighten the threaded connection; use a wrench on the hex fitting, not the gauge case, to avoid damage to the Bourdon tube or dial.