Murphy OPLFG-S-5000 Pressure Swichgage

The Murphy OPLFG-S-5000 is a robust combination pressure gauge and limit switch (Swichgage) designed for high-pressure industrial applications, such as oil and gas production, compressor stations, engines, and pumps. Manufactured by FW Murphy, this flange-mount model features a 4-1/2 inch dial for clear visibility, adjustable high and low set points for automated shutdown or alarm functions, and a rugged construction suitable for harsh environments. Key features include a corrosion-resistant stainless steel sensing element, snap-acting switch contacts, and an optional explosion-proof enclosure. It offers superior reliability in monitoring and controlling pressure up to 5000 PSI, with advantages over similar products like those from Ashcroft or WIKA, including integrated switching that eliminates the need for separate sensors, reducing installation complexity and costs. Benefits include enhanced safety through automatic responses to pressure deviations, easy field adjustments, and long-term durability. Drawbacks may include the need for regular calibration and a higher initial cost compared to basic gauges. Note: Attached images show a dial marked 0-30 PSI, which appears inconsistent with the 0-5000 PSI range; this may indicate a scale multiplier (e.g., x100 for 0-3000 PSI approximation) or a labeling discrepancy—recommend verification with manufacturer. Ideal for critical systems requiring precise pressure management.