Small-caliber single-seat control valve body sleeve body type: straight single seat cover drum casting ball valve nominal diameter :15,20,25㎜ nominal :ANSI 125,150,300,600; JIS 10,16 , 20,30,40K; PN1.6,4.0,6.4MPa connection type: sealing surface FF, RF, RJ, LG flange standard :ANSI B16.5, JIS B2201, JB / T79.1, JB / T79. 2, HG20592 welding standards: SW socket weld material: the corrosion-resistant alloy steel, CrMo steel, cast stainless steel, Hastelloy, etc. Bonnet: Normal temperature type -17 + 230 ℃ elongation I type ~: -45 ~ -17 ℃, + 230 ~ + 566 ℃ Elongation type II:-100 ~ -45 ℃ Elongation type III:-196 ~ -100 ℃ Gland type: Bolt Clamp packing :V type PTFE packing, impregnated PTFE asbestos packing, asbestos braided packing, graphite packing electric resilient seated gate valve Features 1, flat-style seat, there are no dirt accumulation, so that more reliable seal 2, the valve overall package nitrile rubber automatic exhaust valve principle, the valve parts are made of corrosion-resistant steel does not rust and copper alloys can be used for sewage systems adapt to poor working conditions 3, small size, light weight, automatic exhaust valve much money, easy installation and maintenance 4, valve stem three O-ring seal, greatly reducing the friction resistance switch, the switch light and watertight. Auto exhaust valve ex-automatic exhaust valve, Tianchang instrument linked instruments provided by the United Instrument Sales Co., Ltd. Tianchang instrument. Instrument Sales Co., Ltd. Tianchang instrument Union (www.ylybxs.com) (www.ylybxs.com) strong, credible, in Chuzhou temperature instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Tianchang instrument linked instruments into the brilliant and you work for a better future!