Ashcroft 662876143030 Pressure Gauge 0-100 Psi 3.5 in

Product Description

The ASHCROFT 662876143030 is a commercial-grade analog pressure gauge designed for continuous service in HVAC, plumbing, and industrial piping systems. It features a 3.5-inch dial with a 0 to 100 psi range and an accuracy rating of 3-2-3 percent of scale, meaning the middle 94 percent of the range reads within 2 percent and the outer spans read within 3 percent. The steel case protects the internals in light mechanical environments, while the polycarbonate lens resists impact and holds up to typical shop conditions. A 1/4-inch NPT center back mount connection makes installation straightforward on standard gauge ports found in most commercial and residential mechanical systems. Licensed tradespeople in HVAC and plumbing install this gauge as a permanent monitoring instrument or as a service replacement.

This gauge is suited for residential and light commercial applications where a reliable, easy-to-read dial instrument is needed to monitor water pressure, air pressure, or similar non-corrosive media. The 3.5-inch dial face is large enough for quick visual checks at arm's length on boiler supply lines, chilled water circuits, compressed air manifolds, and similar service points. The center back mount orientation allows flush or panel mounting in tight equipment rooms. The bronze Bourdon tube is compatible with water, air, and many common non-aggressive fluids encountered in mechanical systems.

Key Features

• 0 to 100 psi range with 3-2-3 percent of scale accuracy for reliable mid-range readings
• 3.5-inch analog dial for clear at-a-glance pressure monitoring
• 1/4-inch NPT center back mount connection fits standard gauge ports
• Steel case construction for durability in commercial mechanical environments
• Bronze Bourdon tube compatible with water, air, and non-aggressive media
• Polycarbonate lens resists impact and provides a clear view of the dial face
• CRN certified for use in applicable Canadian pressure system applications

Compatibility

Designed as a direct-fit commercial pressure gauge replacement for systems requiring a 1/4-inch NPT center back mount port and a 0 to 100 psi analog dial instrument.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or pipefitter in accordance with applicable local mechanical codes. Always depressurize and isolate the system before removing or installing any pressure gauge. Use an appropriate thread sealant or PTFE tape on the NPT threads and hand-tighten before applying final torque with an adjustable wrench on the hex fitting only — do not torque by gripping the case. Verify the gauge orientation after installation so the dial face remains readable during normal system operation.