Farris Engineering 27DA23-140 Safety Pressure Relief Valve 3/4" x 1"

The Farris Engineering 27DA23-140 is a high-performance safety pressure relief valve designed for overpressure protection in industrial piping systems, vessels, and equipment. This model features a balanced bellows design (indicated by the 'DA' in the model code), making it suitable for applications with variable back pressure or corrosive media. It has a 3/4-inch inlet and 1-inch outlet, with a D orifice for precise flow control. Key benefits include reliable pressure relief to prevent system failures, compliance with ASME Section VIII standards, and materials like stainless steel wetted parts for durability in harsh environments. Applications span chemical processing, oil and gas, pharmaceuticals, and power generation, where it excels in protecting against excessive pressure buildup. Advantages over similar products include enhanced bellows sealing for back pressure resistance, easy maintenance with top-guided disc, and high flow capacity (up to 167 SCFM at 10% overpressure). Drawbacks may include higher initial cost compared to basic spring-loaded valves and the need for periodic testing to ensure set pressure accuracy. Based on image analysis, this unit appears used with visible wear, red paint, and no major damage, suggesting it's suitable for refurbishment or secondary market use. Overall, it's a robust choice for critical safety applications, offering superior reliability and longevity.