Piston Type Pneumatic Actuator Shut-off Control Valve

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, RoHS, CE, ISO9001
• Model NO.: ZXQ/ZSQ
• Media: Gas, Oil, Water, Acid
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Material: Stainless Steel
• Type: Sleeve
• Transport Package: Plywood Case
• Specification: DN50-DN600
• Trademark: HUIZHENG
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000pieces/Year

Product Description

Piston Type Pneumatic Actuator Shut-Off Control Valve


Product Introduction

Pneumatic shut-off valve adopts the top guide multi spring actuator. It has the advantages of compact structure, light weight, sensitive action, S-streamline, small pressure drop loss, large capacity, convenient disassembly and assembly, etc.
The shut-off valve shut off, open or change the flow direction of medium accepting the signal from the regulating instrument. To automatic control the process parameters such as pressure, flow, temperature or liquid level.
It is widely used in automatic control and remote control system of petroleum, chemical, metallurgy, electric power, light industry, textile and other industry.
This series of valves are diaphragm actuator type and piston actuator type.

Technical Parameters
 

DN(mm)	20-200
PN	16, 40, 64
Body type	Single seat, double seat, sleeve seat
Sealing type	Packing seal, bellows seal
Working Temperature	-60~450 ºC
Leakage level	Class IV, Class VI
Flow Characteristic	Quick opening
Medium	Non-corrosive liquid, water,gas and steam

Base Material
 

Body	HT200, ZG230-450, ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti
Seat, Disc	1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, 1Cr18Ni9Ti, Hardfacing of Stellay alloy
Sleeve, Plug	1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, 1Cr18N19Ti, Hardfacing of Stellay alloy
Packing	Teflon, flexible graphite
Corrugated diaphragm	NBR sandwich reinforced polyester fabric
Spring	60Si2Mn
Push rod, Stem	2Cr13, 1Cr18Ni9Ti
Disc, Plug (soft seal)	Enhanced Teflon
Bellows	1Cr18Ni9Ti

 
Feature
 

* The shut-off valve connects a multi-spring actuator and the regulating mechanism by three columns. The whole height and weight can be reduced by about 30%.
* The valve body is designed into low flow resistance flow  with equal cross section by the principle of fluid mechanics. The rated flow coefficient increases by 30%.
* The sealing types are tight seal and soft seal. The tight seal is hardfacing hard alloy and the soft seal is sealed by soft material with good sealing performance.
* Balanced trim type improves the allowable differential pressure of shut-off valve.
* The bellows seal forms a complete seal on the moving stem, blocking the median leakage.
* Piston type actuator is large operating force and large differential pressure.

Technical parameters and performance
 

Nominal Diameter DN(mm)		15	20	25	32	40	50	65	80	100	125	150	200
Rated flow coefficient Kv	Single, double seat	5	7	11	20	30	48	75	120	190	300	480	760
	Sleeve seat			11	20	30	48	75	120	190	300	480	760
Nominal pressure PN(MPa)		1.0    1.6    4.0    6.4
Rated stroke (mm)		8				12		20		25	40		50
Effective area (cm^2)	ZMQ type	100				200		400			600		1000
	ZSQ type	100			125			160			250
Leakage	Hard seal l/h	Normal: 10^-4×capacity Tight type: single, double seat: 1.2×10^-7,sleeve seat:5×10^-5×capacity
	Soft seal	Class VI
Allowable pressure differential (MPa)	ZMQP(N)Positive	6.4	5.09	2.91	1.85	2.18	1.33	1.52	0.99	0.62	0.60	0.69	0.39
	ZMQP(N)Reactive	6.4	6.4	3.88	2.47	2.91	1.77	2.03	1.32	0.83	0.80	0.92	0.52
	ZSQP(N)	6.4	6.1	3.5	2.3	3.0	1.9	1.9	1.5	0.93	0.84	0.65	0.47
	ZM(N)QM	Nominal pressure
Signal pressure (kPa)	ZMQ	0 or 250
	ZSQ	0 or 400~600

 

Details and dimensions and weights

Nominal diameter		15	20	25	32	40	50	65	80	100	125	150	200
A		Ф196				Ф232		Ф308			Ф394		Ф498
L	PN16, 40	130	150	160	180	200	230	290	310	350	400	480	600
	PN64	210	230	230	260	260	300	340	380	430	500	550	650
H	PN16, 40	305	340	345	370	380	390	475	490	500	765	825	927
	PN64	320	350	354	372	382	397	473	475	517	805	882	815
	Bellows sealed	375	409	414	431	441	468	555	570	613	855	915	1017
H1	PN16, 40	50	53	58	70	75	83	93	100	110	125	143	170
	PN64	60	65	70	77.5	85	90	100	85	125	148	170	208
H2	PN16	115	115	121	130	140	153	178	190	200	260	320	360
	PN40	125	125	130	140	150	160	185	200	220	280	320	380
	PN64	150	150	160	170	180	200	230	250	282	310	430	480
H3	PN16, 40	404	415	428	448	448	468	561	578	590	886	1008	1120
	PN64	365	430	498	528	528	530	535	540	600	890	1208	1305
	Bellows sealed	395	465	478	509	509	548	641	658	670	976	1098	1210
Weight (kg)	Standard	10	10	12	15	18	23	35	45	60	75	90	120
	Bellows sealed	12	12	14	17	20	26	38	48	64	79	95	125

Connection dimensions and standards

Flange standard: Cast iron is GB4216-86 Cast steel is GB9113-88, JB/T79-94
Flange seal standard: PN10, PN16 is RF, PN40,PN64 is FM, the body is M
Structural length standard: GB12221-89
Connection of actuator air signal: Internal thread M10×1
The flange and distance of flange end face can be manufactured according to the standard specified by the user. Such as ANSI, JIS, DIN standard.

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FAQ:

1. Are you trading company or factory?
We are factory in Yongjia, Wenzhou, China.
2. Are the prodcuts certified?
Yes, ISO, FDA, SIL 2, CE, LFGB and so on.
3. Delivery time?
7-15 working days usually, but it will be longer when peak season.
4. MOQ?
One set.