CARBO Instruments Vacuum Pressure Gauge 0 to -30 inHg, Glycerin Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale inHg/Bar - ASME B40.1 Grade A

About this product

ASME B40.1 Grade A Accuracy (+/-2-1-2%): Professionally manufactured for reliable performance; large 2-1/2" (63mm) dial with high-contrast markings ensures easy pressure reading. Liquid Filled for Stable Reading: Glycerin filling stabilizes pointer movement and dampens vibration and pulsation to prevent needle flutter and pressure spikes, ensuring accurate dual-scale PSI/Bar readings. Industrial & Commercial Use: Ideal for air, oil, water, and gas systems including pumps, compressors, hydraulic presses, pneumatic equipment, irrigation, HVAC, pool filtration, and general machinery. Heavy Duty Construction: Rust-resistant 304 stainless steel case with durable brass wetted parts and copper alloy internals; chrome-plated brass connection and polycarbonate lens for impact resistance. Standard 1/4" NPT Lower Connection: Ensures compatibility with most regulators, tanks, manifolds, and fittings. Please verify your connection size before ordering.