ZDLP、ZDLNThe single-seat electric seat control valve-The Yangzhou Bernard valve automatic control Equip

The ZDLP, ZDLN electronic type electric single-seat, double seat control valve, electronic straight stroke electric actuator and through dual-oriented single-seat, two-seat valves. Compact, quick action, the pressure drop, valve capacity, flow characteristics of precision, to accept adjust the instrument input (4-20mA DC 0-10mA DC or 1-5V DC) and other control signals and single-phase power can be directly control operation, to achieve automatic adjustment of process piping fluid medium control, precise control of gas, liquid, steam and other media widely used in process parameters such as pressure, flow, temperature, level and other parameters remain at a given value.

Structural features:
A. ZDLP, ZDLN electronic electric single seat, two-seat control valve is the instrument of execution units in the automation control system, AC220V power supply voltage, power, and accept input from DCS, PLC systems, or adjusting instruments, operation, etc. (4 - 20mA ,0-10mA or 1-5VDC) current signal or voltage signal, you can control the operation of mechanical and electrical integration structure, with the position feedback of the machine servo operation and signal, position indicator, manual operation, strong functions, reliable, simple connection, high regulation accuracy, a straight stroke output of the thrust to change the valve opening displacement to achieve the precise regulation and control of process parameters of the fluid medium.
Two. ZDLP, ZDLN single-seat, two-seat control valve according to the mode of action can be divided into;
Positive role: power closed - normally open valve position (when the signal increases downward displacement), "B type"
Reaction: power open - normally closed valve position (when the signal increases upward displacement), "K-type"
3. ZDLP electric control valve is through single seat casting ball valve, single-seat piston valve core apply to allow leakage of small valve before the valve after the small differential pressure in the workplace.
4. ZDLP type electric single-seat control valve for direct low flow resistance to a single seat, double-oriented structure, it is only one seat and a plunger-shaped spool has closed performance for media leaks and adjust the accuracy, there are strict requirements of the occasion, but the valve structure on the reasons, the upper and lower stem of the unbalanced force, especially in the nominal diameter large condition more obvious, and thus the valve is only suitable for smaller occasions working pressure.
5 Electric regulating valve in ZDLN casting ball valve through engine, two-seat piston-type spool, applies to a large pressure difference, the flow is large and not very clean medium and leakage requirements are not strict occasion
6. For the direct low flow resistance two-seater, the ZDLN electric two-seat valve, dual-oriented structure, the spool in the displacement process is stable and reliable, the two-seat valve body consists of two valve seat, the fluid medium through the upper and lower valve core seat outflow, with the flow, allowing the pressure, the unbalanced force is small, is a balanced structure of two-seat valve
7. (Logarithmic) Sex change the spool-shaped design; the different shape of the spool will be the value of the different flow characteristics: equal percentage, linear features
This series of products are widely used in chemical, petroleum, metallurgy, power plant, textile, paper and pharmaceutical industrial production process of automatic regulation and remote control.
Standard room temperature, high temperature heat type, bellows seal type, jacket and insulation type varieties. Product pressure grade PN1.6 4.0 6.4MPa; nominal diameter DN20-300mm; applicable fluid temperature -100 - +500 ° C

执行机构主要技术参数：

型号	输出推力N	速度mm/s	最大行程（mm）	型号	输出推力N	速度mm/s	最大行程（mm
381LSA-08 381LXA-08	800 800	4.2 4.2	30	PSL201	1000	0.4/1.2	50
381LSA-20 381LXA-20	2000 2000	2.1 2.1	30	PSL202	2000	0.4/1.2	50
381LSB-30 381LXB-30	3000 3000	3.5 3.5	60	PSL204	4500	0.4/1.2	50
381LSB-50 381LXB-50	5000 5000	1.7 1.7	60	PSL208	8000	1.0	50
381LSC-65	6500	2.8	100	PSL210	10000	1, .0	50
381LSC-99	10000	2.0	100	PSL312	12000	1.0	65
381LSC-160	16000	1.0	100	PSL325	25000	1.0	100
(信号线用屏蔽线) 防护等级：相当IP55 隔爆标志：ExdⅡBT4 带手柄				(信号线用屏蔽线) 防护等级：IP65 带手轮

性能指标：

项目			指标值
基本误差％			381L ±2.5； PSL±1.0
回差％			381L ±2.0； PSL±1.0
死区％			1.0
始终点偏差％	电开	始点	±2.5
		终点	±2.5
	电关	始点	±2.5
		终点	±2.5
可调范围			50：1
额定行程偏差％			2.5

允许压差 MPa （ZDLP型）：

公称通径（mm）	20	25	32	40	50	65	80	100	125	150	200	250	300
阀座直径（mm）	20	25	32	40	50	65	80	100	125	150	200	250	300
允许压差 MPa	2.0	3.0	2.0	1.8	1.05	1.16	0.67	0.47	0.39	0.26	0.16	1.1	0.5

允许压差 MPa （ZDLN型）：

公称通径（mm）	20	25	32	40	50	65	80	100	125	150	200	250	300
阀座直径（mm）	20	25	32	40	50	65	80	100	125	150	200	250	300
允许压差 MPa	≤公称压力											4.0	3.4

主要零件材料及适用温度、介质：

公称通径mm		DN15-DN300
材料代号		C（WCB）	P（304）	R（316）
主要零件	阀体、阀盖	WCB（ZG230-450）	ZG1Cr18Ni9Ti（304）	ZG1Cr18Ni12Mo2Ti（316）
	阀芯、阀座	1Cr18Ni9Ti（304）或司钛莱合金堆焊	1Cr18Ni9Ti（304）或司钛莱合金堆焊	1Cr18Ni12Mo2Ti(316)或司钛莱合金堆焊
	阀杆	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
	填料	V型聚四氟乙烯（F4）、柔性石墨、不锈钢波纹管
	垫片	增强聚四氟乙烯（F4）、不锈钢垫片、金属石墨缠绕垫片
	推杆、衬套	2Cr13
适用工况	适用介质	水蒸汽油品类气液体	硝酸碱类腐蚀性气液体	醋酸类等腐蚀性气液体
	常温型	-30～+250 F4：≤200℃	-40～+250 F4：≤200℃	-40～+250℃ F4：≤200℃
	高温型	-30～+450℃	-40～+500℃	-40～+500℃
	低温型		-40～-60℃、 -60～-100℃

主要技术参数：

公称通径mm			20	25	32		40	50<, /SPAN>	65	80	100	125	150	200	250		300
阀座直径mm			20	25	32		40	50	65	80	100	125	150	200		250	300
额定流量系数Kv	单座		5	8	12		20	32	50	80	120	200	280	450	800		1200
	双座			10	16		25	40	63	100	160	250	400	630	1000		1600
额定行程L（mm）			10	16		25			40			60				100
执行器型号		3810L	381LS-8	381LS-20			381LS-30		381LS-50			381LS-65				381LS-99
		PSL	PSL201	PSL202			PSL204		PSL208			PSL312				PSL325
		防爆型	381LX-20				381LX-30		381LX-50			381LX-65				381LX-99
电源电压			AC220V 50Hz
信号范围			4～20mA DC 0～10mA DC或1～5V DC 0～10V DC
作用模式			电开式（K）型、电关式（B）型
故障状态时			全开、全关、自锁保位
流量特性			等百分比、直线、快开性
允许泄漏量（L/h）			单座阀：≤10^-4×阀的额定容量；双座阀：≤10^-3×阀的额定容量
固有可调比R			50:1
公称压力PN(MPa)			1.6 2.5 4.0 6.4

产品应用规范：

性能GB/T7387 结构长度GB/T12221-05 材料：GB/T12228-12230

法兰连接：JB/T79-94 GB/T9113

符合：IEC60534标准

外形尺寸

公通径(mm)			20	25	32	40	50	65	80	100	125	150	200	250	300
L(mm)	PN1.6MPa		180	185	200	220	250	275	305	350	410	450	550	670	770
	PN4.0MPa		185	190	210	230	255	285	310	355	425	460	560	690	800
	PN6.4MPa		190	200	220	240	265	295	320	370	440	475	570	752	820
H1(mm)	单座		60	115	120	130	145	180	195	200	245	255	295	380	435
H1(mm)	双座			120	120	140	145	190	210	220	270	280	320	450	465
配PSL	H(mm)≈	普通型	704	747	835	910	955	1100	1120	1140	1210	1220	1270	1810	1890
	H(mm)≈	散热片型	855	898	990 ,	1060	1110	1277	1195	1320	1420	1430	1490	2066	2140
	D(mm)		176								225
配381L	H(mm)≈	普通型	620	680	683	758	768	990	1022	1050	1340	1360	1440	1710	1770
	H(mm)≈	散热片型	770	830	835	910	920	1160	1195	1220	1540	1570	1660	1960	2030
	D(mm)		225								310
低温型	-100℃	H2	500			600					700
低温型	-100℃	H≈	1110	1120	1310	1320	1330	1460	1478	1497	1850	1860	1900