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Control Valve Series

• Automatic Control Valve
• Self-Acting Control Valve
• Cage Guided Control Valve
• Single Seat Control Valve
• Small Plug Single Seat Control Valve
• Double Seat Globe Valve
• Globe 3 Way Control Valve
• V-Ball Control Valve
• Butterfly Control Valve

Product drawing»

Structural drawing»

Electric straight signle and double seat control valve

product drawing

features

ZYHDP, ZYHDN type electric straight single seat regulator and electric straight double seat regulator are the executed units of DKZ type electric unit combination instruments, are one of the important link in production process automatical adjustable system. It is powered by power accept uniform standard signal 4-0-10 or 2mADC, shift it to the corresponding up and down displacement of input signal, automatically control valve, changing the valve open degree, to achieve the automatic adjustments of industrial medium and flow rate, pressure, temperature and hydraulic parameters. Thus electric straight single seat regulator and electric straight two-seat regulator are widely used in chemical, petroleum, metallurgy, power stations and textile and other industrial production process automatic adjustment and remote control. The electric straight single seat regulator and electric straight double seat regulator produced by Shanghai Yihuan flow control equipment Co., ltd have standard, bellows sealing type, jacket insulation types. Nominal pressure rating is PN16, 40, 64, Nominal diameter scope is DN20- 400.

structure

technical parameters and performance indicators

body, bonnet：WCB、HT200、ZG230-450、ZG1Cr18Ni9Ti
core, seat：1Cr18Ni9Ti, bead welded stellite
packing: PTFE "V"type, flexible graphite
gasket: rubber asbestos plate, 1Cr18Ni9Ti, graphite spiral wound gasket
stem, pushrod：2Cr13、1Cr18Ni9Ti
sleeve：2Cr13
PN(Mpa)：1.6 4.0 6.4
intrinsic flow characteristic linear, equal percentage
allowed leakage（1/h）：10-4×rated volume（single seat）、10-3×rated volume（double seat）
working temperature t(℃)：-20～220、-40～250、-40～450、-60～450
signal scope（Ma.DC）： 0～10、4～20
power voltage：220V、50HZ
acting mode: electric open, electric close

detail technical parameters

DN(mm)		20	25	32	40	50	65	80	100	125	150	200	250	300	400
rated flow ratio Kv	single seat	5	8	12	20	32	50	80	120	200	280	450	800	1200
	double seat		10	16	25	40	63	100	160	250	400	630	1000	1600	2700
rated stroke L(mm)		10	16		25		40			60		100
PN(Mpa)		1.6   4.0    6.4
intrinsic flow characteristic		linear, equal percentage
allowed leakage（1/h）		10-4×rated volume（single seat）、10-3×rated volume（double seat）
working temperature t(℃)		-20～220、-40～250、-40～450、-60～450
signal scope （Ma.DC）		0～10、4～20
power voltage		220V、50HZ
acting mode		电开式、电关式electric open, electric close

This product performance index implement GN/T4213-92 external dimensions (unit：mm)

DN		20	25	32	40	50	65	80	100	125	150	200	250	300
flange length (L)	PN16	180	185	200	220	250	275	305	350	410	450	550	670	770
	PN40	190	190	210	230	255	285	310	355	425	460	560	690	785
	PN64	190	205	220	240	265	295	325	370	440	475	570	752	819
standard bonnetH1	Single seat	742	777	789	812	812	962	893	991	1125	1141	1125	1487	1540
	Double seat		787	793	832	842	987	1017	1041	1175	1191	1279	1602	1640
Mesthoerm type	Single seat	838	860	872	894	948	1117	1138	1146	1308	1324	1411	1630	1720
bonnet H1	Double seat		869	874	915	948	1142	1172	1196	1358	1378	1462	1750	1820
H2	Single seat	91	112	118	129	144	173	191	195	243	251	290	380	436
	Double seat		117	120	139	144	188	208	220	268	278	320	441	465
B		460					530			630
flange standard		GB：1.6、2.5、4.0、6.4Mpa    ANSI：150、300、600Lb    JIS：10K、20K、30K

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