pressure resistance: this sewage tank drain valve is engineered to handle up to 16 MPa working pressure, delivering durability in challenging environments. seal technology: features Santoprene seals for compatibility with a wide range of fluids while preserving the valve's integrity. Adaptive applications: suitable for vacuum and pressure systems, enhancing flexibility and reliability across various setups. Clog performance: the innovative passage design provides unrestricted flow, ensuring effective sewage management with reduced blockage risk. Use scenario 1: ideal for industrial wastewater tanks and sump facilities where pressure and reliable discharge are required. Use scenario 2: suitable for systems that alternate between vacuum and pressure, such as integrated treatment lines and pump stations, providing dependable operation across conditions. Use scenario 3: applicable to municipal or commercial sewage piping where uninterrupted flow is essential to prevent blockages and maintain continuous service.