压力等级PN(MPa) Pressyre grade | 0.25 | 泄漏量 Leakage rate | 额定Kv值的0.5% 0.5%of the rated kv value | 使用温度(℃) Operating temperature | 常温(Cold temperature)-40℃∽+250℃ 高温(high temperature)+200℃∽+600℃ | 允许环境温度(℃) Acceptable ambient temperature | -20℃∽+60℃ | 开度 Opening | 0∽60°或(or)0∽90° | 气源压力 Air pressure | 500∽800KPa | 气源电压 Power voltage | 220V.AC 50HZ | 控制信号 Control singal | 4∽20mA,1∽5V.DC 电动（electric) 4∽20mA,20∽100KPa 气动（pneumatic) | 基本误差 Intrinsic error | ±2%气动（pneumatic)±2.5%电动（electric) | 回差 Repeatability | ≤1.5%气动（pneumatic)≤2% 电动（electric) | 死区 Dead band | 0.8% 气动（pneumatic)0.8% 电动（electric) |
| 阀体 Valve body 阀 板 Valve plate | 碳钢（Carbon steel)230-450 1Cr18nI9 0Cr17Ni12Mo2 | 阀杆 Valve seat | 2Cr12 1Cr18Ni9Ti | 阀座 Valve sea | 1Cr18Ni9Ti 0Cr17Ni12Mo2 | 衬套 Bushing | OCr17Ni12Mo2 1Cr18Ni9Ti氮化处理（Nitrogen treatment） | 填料 Stuffing | 常温填料用聚四氮乙烯V形填料 高温用柔性石墨或石棉带 Use polytetrafluoroethy lene V-shaped stuffing for temperature. Use fldxible graphite or asbestos tape for high temperature. |
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