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ZMAQ type pneumatic cut-off valve

ZMAQ Pneumatic Thin Film Cut off Valve Overview ZMAQ Pneumatic Thin Film Cut off Valve adopts a top guide structure and is equipped with a multi sprin

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ZMAQ type pneumatic cut-off valve

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ZMAQ Pneumatic Thin Film Cut off Valve
ZMAQ Pneumatic Thin Film Cut off Valveoverview
ZMAQ Pneumatic Thin Film Cut off ValveAdopting a top guide structure and equipped with multiple spring actuators. haveCompact structure, light weight, sensitive action, S-shaped fluid channel, low pressure drop loss, large valve capacity, easy disassembly and assemblyWaiting for advantages.
The cut-off valve receives signals from the regulating instrument to cut off, open or change the flow direction of the medium, achieving automatic control of process parameters such as pressure, flow rate, temperature or liquid level. Widely used inPetroleum, chemical, metallurgical, power, light industry, textileIn the production process automation and remote control systems of various industrial sectors. Characteristics of Pneumatic Thin Film Sleeve Cut off Valve
The cut-off valve adopts a multi spring actuator connected to the regulating mechanism with three columns, which can reduce the overall height by about 30% and the weight by about 30%.
The valve body is designed according to the principles of fluid mechanics as a low flow resistance channel with equal cross-section, increasing the rated flow coefficient by 30%.
There are two types of sealing parts for valve internals: tight type and soft type. The tight type is made of hard alloy welding, while the soft type is made of soft material and has excellent sealing performance when closed.
The balanced valve internals increase the allowable pressure difference of the shut-off valve.
The bellows sealing type forms a complete seal for the moving valve stem, blocking the possibility of medium leakage.
Piston type actuator, with high operating force and large pressure difference.
ZMAQ Pneumatic Thin Film Cut off ValveMaterial for main parts

MATERIAL	C（WCB）	P（304）	R（316）
main part	Valve body and valve cover	WCB（ZG230-450）	ZG1Cr18Ni9Ti（304）	ZG1Cr18Ni12Mo2Ti（316）
	Valve core and seat	1Cr18Ni9Ti (304) or Si Ti Lai alloy overlay welding	1Cr18Ni9Ti (304) or Si Ti Lai alloy overlay welding	1Cr18Ni12Mo2Ti (316) or Stellite alloy overlay welding
	valve stem	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
	filler	V-shaped polytetrafluoroethylene (F4), flexible graphite
	shim	Reinforced polytetrafluoroethylene (F4), stainless steel gasket, metal graphite wrapped gasket
	O-ring seal	oil resistant rubber
	spring	60Si2Mn
	push rod	2Cr13
	handwheel	HT200
Applicable working conditions	Applicable Medium	Water vapor, oil products, gas and liquid	Nitrate alkali corrosive gas liquid	Acetic acid and other corrosive gases and liquids
Applicable working conditions	Temperature	Hard seal: -30~+450 ℃ Soft seal: -30~+180 ℃

ZMAQ Pneumatic Thin Film Cut off ValveSpecifications and technical parameters

Nominal diameter DN (mm)	15	20	25	32	40	50	65	80	100	125	150	200
Rated flow coefficient KV	Single seat, double seat	5	7	11	20	30	48	75	120	190	300	480	760
Rated flow coefficient KV	sleeve		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 (cm2)	ZQM type	100				200	400	600	1000
Effective area (cm2)	ZQG type	100	125	160	250
Allowable leakage amount	Hard seal 1/h	-General: 10-4X valve rated capacity; Tight type: single and double seat: 1.2X10-7, sleeve 5X10-6X valve rated capacity
Allowable leakage amount	soft seal	Grade VI
Allowable pressure difference (MPa)	Positive effect of ZMQ P N	6.4	5.09	2.91	1.85	2.18	1.33	1.52	0.99	0.62	0.60	0.69	0.39
	ZMQ P N Reaction	6.4	6.4	3.88	2.47	2.91	1.77	2.03	1.32	0.83	0.80	0.92	0.52
	ZSQ P 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
	Z M S QM	nominal pressure
Signal pressure (kPa)	ZMQ	0 or 250
Signal pressure (kPa)	ZSQ	0 or 400-600

Nominal Diameter	15	20	25	32	40	50	65	80	100	125	150	200
A	ф 196				ф 232	ф 308	ф 394	ф 498
L	PN16 、 40	130	150	160	180	200	230	290	310	350	400	480	600
L	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 type	375	409	414	431	441	468	555	570	613	855	915	1017
H 1	PN16 、 40	50	53	58	70	75	83	93	100	110	125	143	170
H 1	PN64	60	65	70	77.5	85	90	100	85	125	148	170	208
H 2	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
H 3	PN16 、 40	404	415	428	448	468	561	578	590	886	1008	1120
	PN64	365	430	498	528	528	530	535	540	600	890	1208	1305
	Bellows sealed type	395	465	478	509	509	548	641	658	670	976	1098	1210
Weight (kg)	Standard type	10	10	12	15	18	23	35	45	60	75	90	120
Weight (kg)	Bellows sealed type	12	12	14	17	20	26	38	48	64	79	95	125

ZMAQ type pneumatic cut-off valve

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