widely used in oil field exploitation, transportation and refining equipment, petrochemical, chemical, gas, HVAC ... Plug Valve2. nominal diameter: DN15~300mm 3. applicable medium: water, oil and other liquid4. Its pressure is PN0.6~1.6MPa ... steelTi-Cr-Ni stainless steelTi-Cr-Ni stainless steelFlexible graphite Oil-immersed asbestos stuffing