Name of medium or liquid delivered
Viscosity and temperature of medium （-20℃-150℃, highest sterilizing temperature 180℃
Delivery head，pressure and flow needed
Number and size of particles in medium
Type of interface (nipping fork，thread，flange)
Valve body material：choose 304，316 or 316L according to different medium
Cooling or heating device can be equipped
Sealing material：standard rubber gasket is silicon rubber, different medium may use fluorine rubber，EthyIene-Propylene Terpolymerisate Rubber，PTFE rubber，nitrile rubber．The standard mechanical seal is silicon carbidehard alloy，and different medium may use graphite—silicon carbide，graphite-ceramic，etc.