Farris Engineering 1890L3-M20 Pressure Relief Valve - 80 PSIG, 3/4" x 1"

The Farris Engineering 1890L3-M20 is a pilot-operated pressure relief valve designed for liquid service in industrial applications, providing reliable overpressure protection for systems such as pipelines, storage tanks, and process equipment. Manufactured by Farris Engineering, a division of Curtiss-Wright, this model features a compact design with a 3/4-inch inlet and 1-inch outlet, set at 80 PSIG, making it suitable for low to medium pressure environments in chemical, petrochemical, and oil & gas industries. Key benefits include high flow capacity, precise pressure control via pilot operation, and corrosion-resistant materials that enhance durability in harsh conditions. Compared to conventional spring-loaded valves, the 1890 series offers better seat tightness at pressures close to set point, reducing leakage and improving system efficiency. Drawbacks may include higher initial cost and the need for periodic maintenance to ensure pilot functionality. This unit appears used or refurbished based on visual inspection, with visible wear and protective tags, but maintains structural integrity. It excels in applications requiring modulated relief action, offering advantages over similar products like those from Crosby or Consolidated by minimizing product loss and ensuring compliance with ASME standards.