Characterized by structural features of the valve structure is based on the structural features of the valve closure member to move relative to the direction of the seat can be divided into: (1) gate-shaped cross-section: close member along the seat centers; such as the cut-off valve (2) cock and ball : closure member or ball plunger high pressure valves, rotating around the center line itself; if plug, ball valve (3) gate shape: closure of parts moving along the vertical seat centers; such as gate valves, gates and other (4) Swing-shaped : closure member to rotate about the axis of the outer seat; as swing check valves, etc. (5) butterfly: the closing member disc rotation about the axis of the valve seat; such as butterfly valve, butterfly valve, etc. (6 ) spool type: Close to slide in a direction perpendicular to the channel. A spool according to body material (1) metal material valves: valve body and other parts made of metallic material. Such as cast iron valves, cast steel valves, valve steel, copper alloy valve, aluminum valve, lead alloy valves, titanium valves, Monel valve. (2) non-metallic materials valves: valve body and other parts are made of non-metallic materials. Such as plastic valves, ceramic valves, ceramic valves, glass steel valves. The following is some stainless steel valve material parameters and specific application (1) Rotary include ball valves, butterfly valves, plug valves, etc. and (2) straight trip includes gate valve, angle seat valve. Cast iron valves | Hunan valves | valve out of Hong Kong, the Hong Kong valve provided by the Dongguan Science and Technology Co., Ltd. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) strong, credible, butterfly and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead valve and you work out of Hong Kong into the brilliant, for a better future!