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Pneumatic piston fast cutting off valve

manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com

Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）

product drawing

Pneumatic piston fast cutting off valves

features:

Pneumatic piston fast cutting off valve constructral diagram

technial parameters and performance indicators

body, bonnet：WCB、 ZG230-450、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti
stem, core：1Cr18Ni9
packing: V shaped PTFE
"O" sealing ring: oil resistant rubber
compression spring：60Si2Mn
sealing gasket：1Cr18Ni9 clip with asbestos
worm：45
thrust rod：2Cr13

detail technical parameters

DN		20	25	32	40	50	65		80	100	125	150	200	250		300
seat diameter		26	43	43	52	62	79		94	115	140	166	216	267		317
rated flow coefficient Kv		6.5	10	15	25	40	65		100	150	260	350	540	760		1178
PN (Mpa)		4.0
stroke mm		16			25		40				60			100
medium temperature ℃		-60～150(normal temperature)；-60～450（middle temperature）；-60～550（high temperature）；-250～-60（low temperature）
flow characteristic		two-way fast open type
equipped with actuator		ZSD-2			ZSD-3		ZSD-5				ZSD-7			ZSD-9
leakage /min	soft sealing	0
	hard sealing	1	3				5				7		9
cutting time S		1～2						2～4							4～7
rated stroke differential ％		＋10

Equipped accessories: solenoid valves, dispatch (or travel switch), air supply trigeminy parts (or air filter pressure reducer)

external dimensions(unit：mm)

DN			20	25	32	40	50	65	80	100	125	150	200	250	300
flange length（L）			185	190	210	230	255	285	310	355	425	460	560	655	735
H1	normal temperature		662	732	744	885	915	1131	1147	1155	1588	1608	1659	1850	2130
	middle temperature		813	883	895	1036	1066	1296	1310	1318	1803	1823	1874
	high temperature		1018	1088	1100	1242	1272	1550	1558	1566	2028	2048	2094
	low temperature	-100℃	1127	1181	1193	1310	1335	1554	1565	1569	1942	1952	1982
		-200℃	1327	1381	1393	1510	1535	1754	1765	1769	2142	2152	2182
		-250℃	1527	1581	1593	1710	1735	1954	1965	1769	2342	2352	2382
	normal temperature		447			570		706			1022			1300
	middle temperature		447			570		706			1022
	high temperature		447			570		649			872
	low temperature	-100℃	500	500	500	500	500	600	600	600	700	700	700
		-200℃	700	700	700	700	700	800	800	800	900	900	900
		-250℃	900	900	900	900	900	1000	1000	1000	1100	1100	1100
H2			53	112	118	129	144	178	191	195	245	255	290	380	436
H3			222			280		378
flange standard			GB：1.6、2.5、4.0、6.4Mpa ANSI：150、300、600Lb JIS：10K、20K、30K

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Pneumatic piston fast cutting off valve