·Non-metallic material valves: Valves whose valve body parts are made of non-metallic materials, such as ceramic valves, fiberglass valves, plastic valves, etc.
·Metal material valves: valves with valve body parts made of metal materials, such as copper alloy valves, aluminum alloy valves, nickel alloy valves, Monel alloy valves, Hastelloy valves, Inconel valves, cast iron valves, carbon steel Valves, low alloy steel valves, high alloy steel valves, stainless steel valves, etc.
·Metal body lined valves: The shell of the valve body parts is made of metal material, and the inner surfaces in contact with the medium are all lined materials, such as lead-lined valves, plastic-lined valves, rubber-lined valves, enamel-lined valves, etc.

