Single-seat pneumatic control valve

Taxonomy:Pneumatic control valve
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Date of release:2019/07/23
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introduce

1.Summary of Pneumatic Single Seat Regulating Valve

Pneumatic single-seat regulating valve is composed of ZHA/B multi-spring pneumatic film actuator and top-guide through low flow resistance single-seat valve. It has compact structure, light weight, sensitive action, S-streamlined fluid passage, small pressure drop loss, large valve capacity, accurate flow characteristics, power distribution-pneumatic valve positioning or pneumatic valve positioner, which can realize the process. The automatic control of pipeline fluid medium is widely used to precisely control the parameters of gas, liquid, steam and other media, such as pressure, flow, temperature, liquid level, etc. The parameters are kept at a given value. It is a new generation of universal control valve products in line with IEC standards.

2. Main Technical Parameters of Executing Agencies

型号	ZHA-22 ZHB-22	ZHA-23 ZHB-23	ZHB-34 ZHB-34	ZHA-45 ZHB-45	ZHA-56 ZHB-56
有效面积cm2	350	350	560	900	1600
行程mm	16	25	40	60	100
弹簧范围KPa	20∼100(标准):40∼200;80∼240; 20∼60; 60∼100
操作方式	普通型,带手动手轮操作型(侧装式,顶装式)

3. Electric-pneumatic valve positioner

Electrical valve positioner is the main supporting instrument of pneumatic actuator in industrial automation. It can be used to improve the linearity of valve position, overcome the friction force of valve stem and eliminate the influence of unbalanced force of regulating valve, so as to ensure that the valve position is proportional to the current signal of 0-10mA DC or 4-20mA from control system or regulating instrument. Achieve correct positioning. (Various models and specifications can be selected)

The company's electric-pneumatic valve positioner matching type (HEP-15 flameproof, HEP-17 intrinsically safe type). It can also be matched according to different requirements (ZPD2000 series, EP3000 series, EP4000 series, YT1000 series, YT2000 series, SIPART PS2 Siemens series and intelligent positioner series products)

4. Performance Indicators of Pneumatic Single Seat Regulating Valve

项目		指标值	项目				指标值
基本误差%	不带定位器	±5.0	始终点偏差 %	气关	不带定位器	始点	±5.0
	带定位器	±1.0				终点	±2.5
回差%	不带定位器	≤3.0			带定位器	始点	±1.0
						终点	±1.0
	带定位器	≤1.0		气开	不带定位器	始点	±2.5
						终点	±5.0
死区%	不带定位器	≤3.0			带定位器	始点	±1.0
						终点	±1.0
	带定位器	≤0.4	允许泄漏量L/h				1×10^-4×阀额定容量
额定行程偏差%		±2.5

Note: This product carries out GB/T4213-92 national standard.

允许压差 MPa

开关方式	执行器型号	弹簧范围KPa	气源压力KPa	需要附件	公称通径(阀座直径)mm
					20				25	40		50	65	80	100	150		200	250	300
					(10)	(12)	(15)	(20)	25	(32)	(40)	50	65	80	100	(125)	(150)	200	250	300
气关	ZHA -22	20∼100 20∼100 40∼200	140 250 140	P P P或R	6.4 6.4 6.4	5.94 6.4 6.4	3.34 6.4 6.4	3.34 6.4 6.4	2.14 6.4 6.4
	ZHA -23	20∼100 20∼100 40∼200	140 250 400	P P P或R						1.31 6.09 6.4	0.84 3.9 5.26	0.53 2.5 3.39
	ZHA -34	20∼100 20∼100 40∼200	140 250 400	P P P或R									0.51 2.36 3.21	0.33 1.56 2.12	0.21 1.0 1.35
	ZHA -45	20∼100 20∼100 40∼200	140 250 400	P P P或R												0.22 1.02 1.39	0.15 0.71 0.97	0.08 0.40 0.54
	ZHA -56	20∼100 20∼100 40∼200	140 250 400	P P P或R															0.06 0.37 0.51	0.04 0.25 0.36
气开	ZHB -22	20∼100 40∼200 80∼240	140 250 400	P P或R P	4.46 6.4 6.4	3.09 6.4 6.4	1.98 5.94 6.4	1.11 3.34 6.4	0.71 2.14 4.99
	ZHB -23	20∼100 40∼200 80∼240	140 250 400	P P或R P						0.44 1.37 3.05	0.28 0.84 1.95	0.18 0.53 1.25
	ZHB -34	20∼100 40∼200 80∼240	140 250 400	P P或R P									0.17 0.51 1.18	0.11 0.33 0.78	0.07 0.21 0.5
	ZHB -45	20∼100 40∼200 80∼240	140 250 400	P P或R P												0.07 0.22 0.51	0.05 0.15 0.35	0.028 0.08 0.20
	ZHA -56	20∼100 20∼100 40∼200	140 250 400	P P P或R															0.03 0.09 0.20	0.02 0.06 0.14

Note: 1) P-valve positioner; R-pressure relay;

2) The allowable pressure difference is the maximum of P when the valve closes P2=0.

3) If the allowable pressure difference is not clear or the maximum working pressure difference is beyond the scope of the list, please contact us.

Dimension Diagram of Pneumatic Sleeve Regulating Valve

5.Configuration Dimension of Pneumatic Single Seat Regulating Valve

公通径(mm)			20	25	32	40	50	65	80	100	125	150	200	250	300
L(mm)	PN1.6MPa		181	184	205	222	254	276	298	352	410	451	600	670	735
	PN4.0MPa		194	200	210	235	267	292	317	368	425	473	615	685	750
	PN6.4MPa		205	210	220	251	286	311	337	394	440	508	650	700	765
H1(mm)	PN1.6MPa		53	58	68	73	80	90	98	108	123	140	168	203	230
H1(mm)	PN4.0MPa		53	58	68	73	80	90	98	115	135	150	188	223	255
H1(mm)	PN6.4MPa		63	68	75	83	88	100	105	125	148	170	203	235	265
H(mm)≈	常温型		398	410	454	457	460	610	622	640	846	870	890	1203	1234
H(mm)≈	高温型		548	560	604	520	627	790	807	850	1096	1130	1150	1523	1554
低温型	-100℃	H2	500			600					700
低温型	-100℃	H≈	926	935	974	1082	1090	1240	1252	1275	1596	1620	1640
ΦA(mm)			285					360			470			620