Mallard Control Model 5600 High Pressure Regulator 5600-1HDF-T3S

The Mallard Control Model 5600 is a robust, pilot-operated high-pressure regulator designed for precise control in gas distribution systems, particularly for natural gas, air, propane, and other non-corrosive gases. This specific variant, 5600-1HDF-T3S, features a 1-inch connection size with a 3/8-inch port diameter and is constructed from durable ductile iron, making it suitable for demanding industrial environments such as oil and gas production, pipeline stations, and process plants. Key features include adjustable spring-loaded pressure control with a range of 46-95 PSIG, high maximum inlet pressure up to 1500 PSIG, and a maximum pressure drop of 500 PSI, ensuring reliable performance under high-flow conditions. Advantages over similar products include its compact design for easy installation, excellent repeatability and low hysteresis for accurate regulation, and resistance to vibration and temperature variations (-20°F to 150°F). Benefits encompass reduced maintenance due to its rugged build, while drawbacks may include higher initial cost compared to basic direct-operated regulators and the need for periodic pilot maintenance in harsh conditions. This unit appears new based on attached images, with no visible wear, clean surfaces, and intact labeling. No parent/child assets are evident. For detailed specs, refer to manufacturer resources like the Mallard 5600 Series Datasheet (available at circor.com or similar sites; search 'Mallard 5600 regulator PDF'). Estimated market price for a new unit is $600-800 USD based on comparable online listings.