ZSPQ pneumatic piston quick cut-off valve-Global supplier

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18968791139
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Shanghai Office: Chonggu Town, Qingpu District, Shanghai.

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ZSPQ pneumatic piston quick cut-off valve

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Product Overview

The ZSPQ pneumatic piston cut-off valve consists of a cut-off mechanism and a pneumatic piston actuator. The cutting mechanism adopts a straight through single seat formation, with a DN20 valve core as a single guide and a DN25-200 valve core as a double guide. It has the characteristics of simple structure, easy operation, reliable use, and fast opening and closing. Mainly used in automatic control systems for liquid and gas media without impurities or particles, requiring quick and tight closure and rapid venting. The product complies with GB/T4213-92.

Main component materials

Part name	Material Science
Valve body and valve cover	ZG270-500、ZG1Cr18Ni9Ti
Valve stem and valve core	1Cr18Ni9
Sealing packing	V-shaped polytetrafluoroethylene
a seal	1Cr18Ni9 asbestos board
worm	45
O-ring seal	Oil resistant rubber
Compression spring	60Si2Mn
Bracket	HT270
Worm gear box, worm gear, cylinder, bearing cover, piston	HT200
Push rod	2Cr13

Main technical parameters of piston actuator

model	ZSD-D	ZSD-3	ZSD-5	ZSD-7
Piston diameter mm	150	200	300	400
Effective area cm2	175	305	700	1245
Travel distance mm	16	25	40	60
Inlet hole thread	M16×1.5	M20×1.5		M24×2
Maximum output force N	7200	12800	29300	5200
Can be equipped with accessories	Air filter pressure reducer, holding valve, travel switch, valve position transmitter, solenoid valve, handwheel mechanism, etc
Operating gas source pressure KPa	500

Performance indicators of pneumatic cut-off valve

Nominal diameter mm		20	25	32	40	50	65	80	100	125	150	200
Leakage rate Drip/min	Soft seal	0
	Hard seal	1	3				5			7		9
Cut off time S		1~2					2~4
Rated travel deviation%		+10

Note: The leakage test medium is water

Allowable pressure difference (MPa)

Nominal diameter mm		20	25	32	40	50	65	80	100	125	150	200
Allow pressure difference	Qi Kai	4.0					4.0	4.0	2.8	3.5	2.4
Allow pressure difference	Qi Guan	4.0					2.5	1.7	1.0	1.1	0.8	0.6

Dimensions mm

Dimensions of ambient temperature pneumatic piston cut-off valve

nominal Path diameter	L	H2	With handwheel				Without handwheel
nominal Path diameter	L	H2	H	H1	H3	Weight kg	H	H1	Weight kg
20	180	53	662	447	222	39	574	359	26
25	190	111	732			46	644		33
32	210	117	744			48	656		35
40	230	131	885	570	280	85	778	463	61
50	255	146	915	570	280	89	808	463	65
65	285	181	1131	706	389	135	969	542	97
80	310	190	1147			143	983		99
100	355	194	1155			163	991		109
125	425	256	1588	1022		305	1305	739	218
150	460	266	1608			331	1325		244
200	560	289	1659			445	1376		358

Dimensions of Medium Temperature Pneumatic Piston Cut off Valve

nominal Path diameter	L	H2	With handwheel				Without handwheel
nominal Path diameter	L	H2	H	H1	H3	Weight kg	H	H1	Weight kg
20	180	53	813	447	222	43	725	359	30
25	190	111	883			52	795		39
32	210	117	895			54	807		41
40	230	131	1036	570	280	90	929	463	66
50	255	146	1066	570	280	95	969	463	71
65	285	181	1296	706	389	145	1132	542	101
80	310	190	1310			155	1146		111
100	355	194	1318			172	1154		128
125	425	256	1803	1022		327	1520	739	240
150	460	266	1823			356	1540		269
200	560	289	1874			464	1591		377

Dimensions of Low Temperature Pneumatic Piston Cut off Valve

Nominal diameter	L	H2	H3	-100℃				-200℃				-250℃
				With handwheel		Without handwheel		With handwheel		Without handwheel		With handwheel		Without handwheel
				H1	H	H1	H	H1	H	H1	H	H1	H	H1	H
20	180	53	222	500	1127	500	1039	700	1237	700	1239	900	1527	900	1439
25	190	111		500	1181	500	1093	700	1381	700	1293	900	1581	900	1491
32	210	117		500	1193	500	1105	700	1393	700	1305	900	1593	900	1505
40	230	131	280	500	1310	500	1203	700	1510	700	1403	900	1710	900	1603
50	255	146		500	1335	500	1228	700	1535	700	1428	900	1735	900	1628
65	285	181		600	1554	600	1447	800	1754	800	1647	1000	1954	1000	1847
80	310	190		600	1565	600	1458	800	1765	800	1658	1000	1965	1000	1858
100	355	194		600	1569	600	1462	800	1769	800	1662	1000	1769	1000	1862
125	425	256	378	700	1942	700	1809	900	2142	900	2009	1100	2342	1100	2209
150	460	266		700	1952	700	1819	900	2152	900	2019	1100	2352	1100	2219
200	560	289		700	1982	700	1849	900	2182	900	2049	1100	2382	1100	2249

The relationship between permissible medium pressure and operating temperature

body material	The nominal pressure is 4.0MPa and the working temperature of the medium is ℃
	200	250	300	350	＜400	＜425	＜450	＜475	＜500	＜510	＜525	＜550
	Maximum working pressure MPa
ZG270-500 ZG1Cr18Ni9Ti	4.0	3.7	3.3	3.0	2.8	2.3	1.8
ZG270-500 ZG1Cr18Ni9Ti				4.0	3.6	3.4	3.2	2.8	2.2	2.0	1.7	1.4

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