YH761P Cascade multistage depressurization high pressure - Regulating valve

Product Characteristics

Small pressure drop loss, large flow, wide adjustable range, high flow characteristic accuracy

lower valve body and lens seat structure, Easy to change the seat, good packing seal

Simple structure, convenient installation and maintenance, but able to adapt to harsh working conditions

Equipped with multi-spring diaphragm actuator, compact structure, small size and large output force

Application of Standards

	中国标准 Chinese Standard	美国标准 American Standard
质量保证 Quality assurance	ISO9001	ISO9001
设计制造 design and manufacture	GB12224-2005	ASME B16.34
法兰标准 flange standard	SH3406,HG20596	ASME B16.5
结构长度 length of structure	JB/T450	ASME B16.10 ISA S75.03
检验和试验标准 inspection and test standard	GB/T4213-2008	ANSI FCI70-2 IEC60534-2-1

Body Selection

公称通径DN	mm	25	40	50		65	80
	inch	1	1.5	2		2.5	3
公称通径DN	mm	100	125	150		200
	inch	4	5	6		8
公称压力 PN	PN	150、220、260、320、420
	ANSI	CL900、CL1500、CL2500
连接形式 Connections	法兰式Flanged:RJ或透镜垫焊接式Welding
阀体形式 body type	锻制角型Forging angle
压盖形式 Gland	螺栓压紧式bolt clamp
阀芯形式	DN25 ～ DN40				压力不平衡结构
	DN50 ～ DN100				压力平衡结构
*上阀盖温度范围 Bonnet temp	标准型				-17～+230℃
	散热片型(G)				-45～-17℃,+230～+566℃
垫圈 Gasket	金属缠绕石墨垫、金属锯齿型(316) matel wound graphite Gasket、Grooved metal gasket (316 stainless steel)
涂层 Painting color	浅咖啡色(环氧树脂),阀体阀盖材质为不锈钢时，均不加涂层。 Light curry(Epoxy resin group) is standard. In the case of stainless steel body, no painting is standard.

Body Structure

Performance

流量特性 Flow characteristics	等百分比特性(%)和线性特性(L) Equal percentage character (%) and linear character (L)
可调范围 Adjustable range	50:1(Cv≥0.25)、30:1(Cv≤0.16)
泄漏等级 Leakage level	标准(standard)Class IV,特需(special)Class V
基本误差 Fundamental error	标准型：±1.5%(带定位器);伸长型：±2.5%(带定位器)
回差 Backlash	标准型：±1.5%(带定位器);伸长型：±2.5%(带定位器)
死区 Dead zone	标准型：±0.6%(带定位器);伸长型：±1%(带定位器)
始终点偏差 Start point deviation	±2%(带定位器)
额定行程偏差 Rated travel deviation	±2%(带定位器)