| API认证闸阀--咨询中国区一级代理经销商深圳科万德机电公司 |
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Designed for dependable, he***y duty per-formance in abrasive service conditi***, DEMCO® DM gate valves are commonly selected for a number of oilfield applicati***, including: 应用领域：
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| The Demco series DM gate valve is offered in two basic pressure classes: The ANSI series valves conform to the standard flange dimension and pressure requirements for ANSI classes 400, 600, 900 and 1500. Except for the 4" class 1500, these valves are designed with economical, double acting threaded stem & gate. The 4" 1500 use the same rising stem design used in the 4" 3000 API series valve. The API series valves conform to the standard flange and pressure requirements for API classes 2000, 3000 and 5000. Except for the 4" and larger API 5000, these valves are designed with he***y duty, double acting rising stems. Both series are offered with threaded, weld and flanged end connecti***. End connection ***ailability varies by size and pressure based on market requirements. Some sizes in the ANSI series are offered with grooved end connecti***. |