Spence 0041DCA Advanced Relief Valve 0.5" x 0.75" Set 60 PSI

The Spence 0041DCA is a high-performance safety relief valve designed for low-pressure applications involving air, gas, steam, and liquids. Manufactured by Spence Engineering Company, this bronze-bodied valve features a 1/2-inch inlet and 3/4-inch outlet, with a factory-set relief pressure of 60 PSI. It complies with ASME Section VIII, NB, TUV, PED, CRN, and CSA standards, ensuring reliability in industrial settings such as boilers, pressure vessels, and piping systems. Key benefits include rapid pressure relief to prevent overpressurization, corrosion-resistant bronze construction for durability in harsh environments, and a compact design for easy installation in tight spaces. Compared to similar products like those from Kunkle or Consolidated, the Spence 0041DCA offers superior flow capacity (e.g., approximately 127 lbs/hr steam at set pressure) and precise set point accuracy, reducing the risk of nuisance tripping. Drawbacks may include higher initial cost and the need for periodic testing to maintain certification. This unit appears new or surplus based on packaging and minimal wear, with no visible damage or corrosion. It includes threaded NPT connections and a manual lift lever for testing. For detailed model decoding, Spence's nomenclature indicates '0041' as Series 41, 'D' for orifice size, 'C' for bronze material, 'A' for standard trim. Applications span HVAC, process industries, and marine systems. Estimated dimensions and weight are based on similar models; exact values may vary. Relevant resources: Spence Series 41 Datasheet (summary: covers specs, installation, and capacity charts; available at emerson.com or spenceengineering.com); Model Number Decoder Guide (PDF summary: explains code structure for customization). Note: Box marking shows '0031DCA-LAS', potential mismatch with user-provided model—suggest verifying via serial number.