Pneumatic three-way shut-off valve

Products > Control valve > Pneumatic three-way shut-off valve

Pneumatic three-way shut-off valve

Model: ZMAQ (Q)
Nominal diameter: DN15 ~ 200mm
Nominal pressure: PN10 ~ 64MPa
Temperature: -60 ~ 450 ℃
Main material: HT200, ZG230-450 ZG1Cr18Ni9Ti ZGOCr18Ni12M02Ti
Drive mode: pneumatic
Design criteria: GB / T17213
Flange standard: GB / T9113, JB / T79 , HG20594 and other standard
Inspection standards: GB / T4213
Connection: flange (FF RF RTJ), welding (SW BW), the screw (for a "less)

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產(chǎn)品詳細(xì)

First, the pneumatic three-way shut-off valve overview

Pneumatic three-way shut-off valve with top guide structure, equipped with multi-spring actuator. Has the advantages of compact structure, light weight, action-sensitive, S-streamline fluid flow line, small pressure drop loss, valve capacity, easy disassembly. Shut-off valve to accept the signal from the regulating instrument, cut off, open or change the media flow to achieve automatic control of process parameters such as pressure, flow, temperature or liquid level. Widely used in petroleum, chemical, metallurgy, electric power, light industry, textile and other industrial sectors of the production process automatic control and remote control system. This series of products are film, piston two. The valve body structure has a single seat, sleeve, two seats (three two-way) three, the sealing form of packing seal and bellows seal two, the product nominal pressure grade PN10,16,40,64 four, nominal diameter Range DN20 ~ 200mm. For fluid temperature from -60 ~ 450 ℃. Leakage level for the IV or Ⅵ level. Flow characteristics for the quick opening.

Second, pneumatic three-way cut-off valve product characteristics

1, Shut-off valve adopts multi-spring actuator and adjusting mechanism to connect with three columns, the whole height can be reduced by about 30% and the weight can be reduced by about 30%.
2, the valve body designed by the principle of fluid mechanics such as cross-section low flow resistance flow channel, the rated flow coefficient increased by 30%.
3, the valve part of the seal has two types of tight and soft seal, close-type surfacing carbide, soft seal for the soft material production, sealing performance when closed.
4, balanced type trim, improve the allowable pressure drop off valve.
5, the bellows sealed type of valve stem to form a complete seal, blocking the possibility of media leakage.
6, piston-type actuator, operating force, the use of large pressure.

Third, pneumatic three-way shut-off valve main parts and materials

Valve body, sealing sleeve: HT200, ZG230-450 ZG1Cr18Ni9Ti ZGOCr18Ni12M02Ti
Spool, valve seat: 1Cr18Ni9Ti OCr18Ni12M02Ti 1Cr18Ni9Ti Welding Department Tai Lai alloy
sleeve, valve plug: 1Cr18Ni9Ti OCr18Ni12M02Ti 1Cr18Ni9Ti Welding Department Tai Cai alloy
filler: Teflon , Flexible Graphite
Corrugated Diaphragm: NBR Clamp Reinforced Polyester Fabric
Spring: 60Si2Mn
Stem, Push Rod: 2Cr13 , 1Cr18Ni9Ti Spool, Plug (Soft): Reinforced Teflon
Bellows: 1Cr18Ni9Ti

Fourth, pneumatic three-way shut-off valve specifications 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, two-seater	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 travel (mm)		8				12		20		25	40		50
Effective area (cm 2)	ZMQ type	100				200		400			600		1000
Effective area (cm 2)	ZSQ type	100			125			160			250
Allow leakage	Hard seal 1 / h	- general: 10 -4 X-rated valve capacity; tight type: Single, two-seater: 1.2 X -7 , sleeve 5X10-6 X-rated valve capacity
Allow leakage	Soft seal	Level VI
Allowable pressure difference (MPa)	ZMQ PN is working	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 PN 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 PN	6.4	6.1	3.5	2.3	3.0	1.9	1.9	1.5	0.93	0.84	0.65	0.47
	ZMS QM	Nominal pressure
Signal pressure (kPa)	ZMQ	0 or 250
Signal pressure (kPa)	ZSQ	0 or 400 ~ 600

1) The performance indicators of this product are in accordance with GB / T4213-92;
2) If the allowable pressure difference in the table is greater than the nominal pressure, the nominal pressure shall be taken as the nominal pressure and less than or equal to the nominal pressure;
3) Value, can be equipped with different cylinders to increase the allowable pressure .

Fifth, pneumatic three-way cut off valve dimensions and weight

Nominal diameter DN (mm)		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
H1	PN16, 40	50	53	58	70	75	83	93	100	110	125	143	170
H1	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	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