Z641 series pneumatic wedge gate valve with manual is a pneumatic actuator (double cylinder valve Weifang, and with buffering mechanism) and manual and Protection Agency (manual and pneumatic self-locking - manual conversion device) lower bracket next shot gate valve. The valve is due to the use of double cylinder structure compared with the single cylinder valve pneumatic valve, the lifting force increases doubled. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! In order to meet users to achieve automatic operation, the company in addition to the supply of this product, also available separately, including stents, including the cylinder block, helping users to the existing wide range of manual valve to transform part of the cylinder pneumatic actuators manual gate valve installed in the large cap valve manufacturer, can constitute a pneumatic cylinder - manual dual gate. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! 2.1 standard pneumatic valve body material quality, should be ductile iron, steel, stainless steel, 316L-based, and indicate the grade and cast actual physical and chemical test data. 2.2 stem material, and strive to stainless steel stem (2CR13), large diameter valves should also be embedded in the package of stainless steel stem. 2.3 Z641F pneumatic valve nut material suppliers, with cast brass or aluminum bronze, and the hardness and strength are greater than the stem. 2.4 stem bushing material, its hardness and strength shall be not greater than the stem, and is immersed in water conditions and valve body is not the formation of electrochemical corrosion. Shandong valve, gate valve, valve type Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!