DIN Standard Steam Safety Valve (A48 Series) - Open Bonnet with Lever | DELCO

✅Open Bonnet for Heat Dissipation: The valve body features an open window design that exposes the spring to the atmosphere. This effectively dissipates heat, preventing the spring from softening under high-temperature steam conditions (up to 350°C+), ensuring the set pressure remains stable.

✅Manual Lifting Lever for Safety Checks: Equipped with a heavy-duty lifting lever (wrench). This allows operators to manually discharge pressure for regular safety inspections or emergency depressurization, complying with ASME and Boiler Safety regulations.

✅Stellite Hardened Sealing Surface: To withstand the high-velocity erosion of steam, the disc and seat sealing surfaces are hard-faced with Stellite alloy. This guarantees superior wear resistance and a tight seal even after repeated discharge cycles.

✅Precise DIN Standard Calibration: Each valve is calibrated at the factory to your specific Set Pressure (Ps). The spring mechanism is optimized for full-lift discharge, ensuring rapid pressure relief to protect boilers and pipelines from explosion risks.

✅Global Connection Standards: While built to German (DIN) quality standards, the flange connections are customizable to ANSI, JIS, and GB. This makes it a versatile drop-in replacement for power plants and heating systems worldwide.