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The Kunshan ALF Machinery & Instrument 64003423 (marketed under the Radnor brand as RAD64003423) is a 2.5-inch replacement pressure gauge designed for low-pressure gas systems. It features a brass socket, a polished brass or gold-plated steel case, and a screw-on polycarbonate lens. The device is engineered for gas regulator services including oxygen, carbon dioxide, and acetylene, providing mechanical pressure measurement via a phosphor bronze or copper alloy bourdon tube.
Features
Red Line indicator for specific gas service identification
High visibility face with calibrations for prescribed gas service
One-piece polycarbonate gauge crystals to protect users
Mechanical rack and pinion arrangement for pressure magnification
Dry gauge construction for environments without mechanical vibration
Gold-plated steel case for corrosion resistance
Phosphor bronze or brass internal sensing elements
UL certified since 1999
Specifications
Manufacturer Part Number: 64003423
Airgas Part Number: RAD64003423
Dial Diameter: 2.5" (63mm)
Pressure Range: 0–30 PSI
Accuracy: +/-3-2-3% (ASME B40.1 Grade B)
Connection Size: 1/4" NPT
Connection Location: Bottom stem mount (Lower mount)
Socket Material: Brass
Bourdon Tube Material: Phosphor bronze or copper alloy
Lens Material: One-piece screw-on polycarbonate
Case Material: Polished brass or gold-plated steel
Ambient Temperature Range: -40 to 60 ℃
Certifications: UL listed, UR listed, ISO9001:2015, CSA, ANSI Grade 3
Scale Type: Single or dual scale (psi, kpa, mpa, bar, kg/cm2)
Operating Pressure Limit: Should not exceed 60-70% of the scale limit
Bezel: No bezel design
Applications
Replacement on regulators and flowmeters of any manufacturer
