进口气动法兰截止阀 应用 Application of Pneumatic Flange Stop Valve

气动法兰截止阀的执行器有薄膜式和活塞式，具有低流阻、双重密封结构的切断阀组成。本产品性能优良、规格齐全，还有形体小重量轻等优点，它能满足化工、石油、冶金和其它工业部门生产过程中自动快速排放和紧急切断的操作要求，适用于生产过程和设备的安全保护系统，也适用于一般的两位控制和开关操作场合 RETZ The actuators of the pneumatic flange stop valve are diaphragm type and piston type, and the valve is composed of low flow resistance and double sealing structure. This product has the advantages of excellent performance, complete specifications, small size and light weight. It can meet the operation requirements of automatic fast discharge and emergency cut-off in the production process of chemical, petroleum, metallurgy and other industrial departments. It is suitable for the safety protection system of production process and equipment, and also for the general two position control and switch operation occasions

进口气动法兰截止阀 特点 Features of pneumatic flange stop valve

执行机构动作速度快、推力大、有自复位功能、带手操机构 The actuator has fast action speed, large thrust, self reset function and manual operation mechanism

阀体流路通畅、流量系数大、阀芯阀座有弹性和刚性串级双重密封 The flow path of the valve body is smooth, the flow coefficient is large, and the valve core and valve seat are elastically and rigidly sealed in series 

独特的结构快速动作、严密切断、安全可靠的高性能切断 Unique structure, fast action, tight cutoff, safe and reliable high-performance cutoff

活塞式参数   Piston type parameters                                                                                                                       

公称压力 MPa	1.6-6.4
公称通径 mm	25	40	50	65	80	100	125	150	200
额定流量系数 Kv	10	25	40	63	100	160	400	630
额定行程 mm	10	16		30			60
气缸有效面积 cm²	180	360		700			1400
全行程时间 S	≤1			≤1.5			≤2
允许压差 MPa	6.4				4.8	3.1	2.9	2.7	1.6
泄 漏 量	硬密封∶1×10¯7阀额定容量
	软密封;VI级（GB/T4213）
操作压力 KPa	500
工作温度℃	-40~+250，-40~+450，-40~+180（软密封）
环境温度 ℃	-40～+70
阀体、阀盖	WCB/304不锈钢
阀芯、阀座	1Cr18Ni9，OCr18Ni12Mo2Ti，密封面堆焊史太立合金
阀座圈	0Cr18Ni12Mo2Ti，聚四氟乙烯
填料	聚四氟乙烯，柔性石墨

薄膜式参数 Membrane type parameter

公称通径 DN(mm)		15	20	25	32	40	50	65	80	100	125	150	200
额定流量系数 Kv	套筒			1n	20	30	48	75	120	190	300	480	760
	单座	5	7	1	20	30	48	75	120	190	300	480	760
	三通
额 定行 程(mm)		8				12		20		25	40		50
允许泄漏量	硬 密 封(I/h)	套筒5×10-5×阀额定容量单座、三通1.2×10-7×阀的额定容量
	软密封(ml/min)	无
工 作 温度(℃)		-20~+200-40~+425
膜片有效面积(cm²)(薄膜式切断阀)		100				200		400			600	1000
公称压力PN(MPa)		1.6 -6.4
允许压差(MPa)	单座	6.4	6.4	3.8	2.5	2.9	1.8	2	1.3	0.83	0.8	0.55	0.52
	套筒	6.4
信号压力(KPa)		200(薄膜式)
阀体		WCB ,ZG1Cr18Ni9Ti
阀塞套筒		1Cr18Ni9Ti,0Cr18Ni12Mo2Ti
阀芯、阀座		1Cr18Ni9Ti,0Cr18Ni12Mo2Ti
填料		聚四氟乙烯柔性石墨