ZXN Lightweight Pneumatic Double Seat Regulating Valve-Fornitore globale

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No. 18 Xihua Road, Luqiao, Oubei, Wenzhou City, Zhejiang Province

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ZXN Lightweight Pneumatic Double Seat Regulating Valve

Product Model: ZXN Lightweight Product Features: ZXN Lightweight Pneumatic Double Seat Regulating Valve

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ZXP pneumatic single seat regulating valve, ZXN pneumatic double seat regulating valve, ZXM pneumatic sleeve regulating valveThe series pneumatic thin film straight through regulating valve is an important product in pneumatic regulating valves, which adopts a top guide structure and is equipped with a multi spring actuator. It has the advantages of compact structure, light weight, sensitive action, S-shaped filling channel, low pressure drop loss, large valve capacity, precise flow characteristics, and easy disassembly and assembly. Widely used for precise control of gas, liquid and other media, process parameters such as pressure, flow rate, temperature, and liquid level are maintained at given values. Single seat is suitable for situations with strict requirements for leakage, low pressure difference before and after the valve, and media with certain viscosity and fiber content; The double seat valve has the characteristics of small unbalanced force, large allowable pressure difference, and large flow capacity, and is suitable for situations where leakage requirements are not strict; Sleeve valves have good stability, are not prone to vibration, have low noise, and are less sensitive to temperature. They are suitable for situations with large pressure differentials and less stringent leakage requirements. There are various types of products in this series, including standard type, adjustable cutting type, corrugated pipe sealing type, jacket insulation type, etc. The nominal pressure rating of the product includes PN10, 16, 40, and 64; The valve body diameter range is DN20~400. Suitable for fluid temperatures ranging from -200 ℃ to 560 ℃ in various grades. The leakage standard has IV or VI level. The flow characteristics are linear or equal percentage. A variety of varieties and specifications are available for selection.

Main technical parameters and performance indicators

Main technical parameters of the regulating mechanism

Nominal diameter mm			20				25	40		50	65	80	100	150		200	250	300	350	400
Valve seat diameter mm			10	12	15	20	25	32	40	50	65	80	100	125	150	200	250	300	Can collaborate with our company
Rated flow rate		straight line	1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690	1000	1600	Negotiate production
Coefficient Kv		Equal percentage	1.6	2.5	4	6.3	10	16	25	40	63	100	160	250	400	630	900	1440
Nominal pressure MPa			0.6
1.6 4.0 6.4			10				16	25			40			60			100
Travel distance mm			Traffic characteristics
Straight line, equal percentage, quick opening type			Medium temperature ℃
-15-200 (normal temperature type), -40 to+250, -40 to+450 (medium temperature type), -100 to+200 (low temperature type)			Flange size
Cast iron flange size according to JB78, cast steel flange size according to JB79			Flange form
The sealing surface of the flange shall be in accordance with JB77, with cast iron flanges being smooth and cast steel flanges being concave	body material	PN	0.6,1.6
	HT200、WCB（ZG230-450）	（MPa）	4.0,6.4
WCB（ZG230-450）、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti			Valve core material
1Cr18Ni9, 0Cr18Ni12Mo2Ti			Upper valve cover form
Ordinary type (constant temperature type), hot plate type (medium temperature type), low temperature type			Adjustable ratio R
50:01:00			Air source connector

M16×1.5

Note: ANSI and JIS flange products can be provided to users, and the structural length can also be determined according to user needs.

Main technical parameters of the executing agency	model ZHA-22	ZHB-22 ZHA-23	ZHB-23 ZHB-34	ZHB-34 ZHA-45	ZHB-45 ZHA-56
ZHB-56	350	350	560	900	1600
Effective area cm2	16	25	40	60	100
Travel distance mm	Spring range KPa 20-100 (standard): 40-200;

80～240; 20～60; 60~100

performance index		project	Indicator value				project
Indicator value	Basic error%	Without locator	±5.0 Always point	Deviation%	air to close	Without locator	Starting point
	±5.0	Equipped with locator				±1.0	End
±2.5	Return difference%	Without locator			≤3.0	Equipped with locator	Starting point
						±1.0	End
	±1.0	Equipped with locator		≤1.0	air to open	Without locator	Starting point
						±2.5	End
±5.0	Dead zone%	Without locator			≤3.0	Equipped with locator	Starting point
						±1.0	End
	±1.0	Equipped with locator	≤0.4				Allowable leakage rate L/h
1 × 10-4 × rated capacity of valve		Rated travel deviation%

±2.5

Note: This product complies with the national standard GB/T4213-92.

Allowable pressure difference	Switch Mode	Model of actuator	Spring range KPa	Gas source pressure KPa	Need attachments
					25				25	40		50	65	80	100	150		200	250	300
					Nominal diameter (valve seat diameter) mm	（10）	（12）	（15）	25	（20）	（32）	50	65	80	100	（40）	（125）	200	250	300
（150） gas	close -22	ZHA 20~100 20~100	140 250 140	40~200 P perhaps	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
	R -23	ZHA 20~100 20~100	140 250 400	40~200 P perhaps						1.31 6.09 6.4	0.84 3.9 5.26	0.53 2.5 3.39
	R -34	ZHA 20~100 20~100	140 250 400	40~200 P perhaps									0.51 2.36 3.21	0.33 1.56 2.12	0.21 1.0 1.35
	R -45	ZHA 20~100 20~100	140 250 400	40~200 P perhaps												0.22 1.02 1.39	0.15 0.71 0.97	0.08 0.40 0.54
	R -56	ZHA 20~100 20~100	140 250 400	40~200 P perhaps															0.10 0.38 0.52	0.07 0.26 0.36
R gas	open -22	ZHB 20~100 40~200	140 250 400	80~240 P perhaps	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
	R -23	ZHB 20~100 40~200	140 250 400	80~240 P perhaps						0.44 1.37 3.05	0.28 0.84 1.95	0.18 0.53 1.25
	R -34	ZHB 20~100 40~200	140 250 400	80~240 P perhaps									0.17 0.51 1.18	0.11 0.33 0.78	0.07 0.21 0.5
	R -45	ZHB 20~100 40~200	140 250 400	80~240 P perhaps												0.07 0.22 0.51	0.05 0.15 0.35	0.028 0.08 0.20
	R -56	ZHA 20~100 20~100	140 250 400	40~200 P perhaps															0.10 0.15 0.20	0.07 0.10 0.14

R
Note: 1) P-valve positioner; R-pressure relay;
2) Allow the maximum value of P when the valve is closed and P2=0;

3) If the allowable pressure difference is unclear or the maximum working pressure difference exceeds the list range, please contact us.
Can be equipped with accessories
Positioner, air filter pressure reducer, holding valve, travel switch, valve position transmitter, solenoid valve, handwheel mechanism, etc

Dimensions mm	DN			L		H				H1		Mass (kg)
Dimensions mm	φA	PN16	PN40	PN64	ordinary	high temperature	PN6	PN16	PN40	PN64 PN6	PN16 PN40	Mass (kg)
20	181	194	206	398	548	45	52		65	19	23	285
25	185	197	210	410	560	50	57		70	20	24
40	222	235	251	455	620	65	75		85	26	35
50	254	267	286	457	627	70	82		90	30	40
65	276	292	311	610	790	80	92		100	47	66	360
80	298	317	337	622	807	95	100		107	55	78
100	352	368	394	640	850	105	110	117	125	65	99
150	451	473	508	870	1130	132	142	150	172	130	160	470
200	600		650	890	1150	160	170	187	207	175	250	470
250	730		775	1203	1523	187	202	225	235	350	470	580
300	850		900	1234	1554	220	230	257	265	500	660	580

PN64

Material for main parts	Part name	material
temperature range	Valve cover on valve body	HT200
	-20～200℃	ZG230-450
	-40～450℃	ZG1Cr18Ni9Ti
	-250～550℃	ZG0Cr18Ni12Mo2Ti
-250～550℃	Valve core and seat	1Cr18Ni9
-250～550℃	-250～550℃	0Cr18Ni12Mo2Ti
-250～550℃	Packing material	PTFE
-40～200℃	Diaphragm film
Ding Qing rubber clip reinforced polyester fabric	compression spring
60Si2Mn	Membrane cover

A3
Ordering Notice: Please fill in the "Specification Sheet" or indicate the following content when placing an order:
1. Product model
2. Nominal pressure
3. Nominal diameter and rated flow coefficient Kv
4. Signal pressure and spring range
5. Traffic characteristics
6. Valve switching method
7. Working temperature range of the medium
8. Valve body and valve core materials
9. Is there an attachment? Please specify the attachment model

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