Graco 118491 100 PSI Air Pressure Gauge 1/4 NPT Bottom

Compatible Machines for Graco 118491 100 PSI Gauge

• Graco Mark V
• Graco Mark X
• Graco King
• Graco GH Series Airless Sprayers
• Graco ProX Airless Sprayers

Product Overview

The Graco 118491 Gauge Air Pressure 100 PSI 1/4" NPT Bottom Mount delivers precise monitoring for airless sprayer systems. Built for durability, it integrates easily into high-pressure circuits for professional coating applications.

• Pressure Range: 0–100 PSI with ANSI/ASME B40.1 Grade 2.5 accuracy
• Connection: 1/4" NPT bottom-mount, side outlet configuration
• Construction: Stainless steel case, brass trim, polycarbonate lens
• Durability: Vibration-resistant, shatterproof lens, overpressure protection up to 150 PSI
• Integration: Mount directly on pump heads, manifold blocks, or bracket assemblies

Design & Materials

Crafted with a stainless steel bourdon tube and brass internal linkage, the gauge ensures mechanical stability and corrosion resistance. The polycarbonate lens is shatter-resistant, and elastomer O-ring seals prevent leaks.

Performance & Calibration

• Repeatability within ±2.5% of span
• Zero adjustment screws allow field recalibration
• Optional glycerin fill for vibration damping
• Maintains accuracy downstream of filters and during high-frequency cycles

Maintenance & Service

• Check zero alignment regularly
• Inspect polycarbonate lens for wear
• Periodic calibration recommended
• Modular socket design allows quick replacement without re-plumbing

Frequently Asked Questions