ZAZN Double seat electric control valve

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Wechat:17717520739
Email：info@shxvalve.com

Address: NO.720, Suide Road, Jiading District,Shanghai, China.

Model：

ZAZN Double seat electric control valve Feature

ZAZN Double seat electric control valve is composed of a DKZ type series of straight travel electric actuator and through double seat control valve is composed of two parts, with the single phase AC 220V or DC 380V power supply for power, accept 0~10mA or 4~20mA DC signal, automatic control valve opening, continuous regulation of pipeline fluid pressure, flow, level and other parameters. ZAZN Double seat electric control valve is sensitive, convenient use, energy and signal transmission characteristics of rapid. ZAZN Double seat electric control valve is widely used in electric power, metallurgy, chemical industry, textile and other industrial automatic control system.

Electric control valve Body type:	straight through casting globe type
Spool type:	non-balanced double seat plug type
Nominal size:	DN20~300,、 NPS 3/4〞~ 12〞
Nominal pressure:	PN16 ~ 100、 CLASS 150LB ~ 600LB
Connection: flange:	FF、RF、MF、RTJ
Welding:	SW、BW
Flange dimension:	According to to IEC 60534
ZAZN Double seat electric control valve Bonnet type:	Ⅰ:standard type（-20℃~230℃） Ⅱ:Radiator type: （-45℃~ high than 230℃ occasion） Ⅲ:Low temperature extended type（-196℃~ -45℃） Ⅳ:Bellow seal type Ⅴ:Warm insulation Jacket type
Packing:	V type PFTE packing, flex. graphite packing, etc.
Gasket:	Metal graphite packing
Actuator:	Electric: DZK series actuator.

Component name	Control Valve Material
Body/Bonnet	WCB/WCC/WC6/CF8/CF8M/CF3M
Valve spool/Seat	304/316/316L(overlaying stellite alloy)
Packing	Normal:-196～150℃ is PTFE,RTFE,>230℃ is flexible graphite
Bellows	304/316/316L
Gasket	Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
Control valve stem	2Cr13/17-4PH/304/316/316L

Electric control valve Flow characteristic	Linear, Equal percentage, quick open
Allowable range	50: 1 (CV<6.3 30: 1)
Rated Cv value	Percentage CV1.6~630 ，linear CV1.8~690
Electric control valve Allowable leakage	Metal seal: IV grade（0.01% rated capacity） Soft seal: VI grade（foam grade） Leakage standard: GB/T 4213
ZAZN Double seat electric control valve Performance
Intrinsic error (%)	±1.0
Return difference(%)	≤1.0
Dead zone(%)	≤1.0
Difference from beginning to end point(%)	±2.5
Rated travel difference(%)	≤2.5

Special test	Material penetration flaw detection (PT), radiator test (RT), flow characteristic test, low temperature test.
Special treatment	Trim nitrogen treatment, seat hard alloy treatment.
Special rinse	Degreasing and dehydration treatment
Special condition	Special piping or connection, vacuum condition, S.S fastener, special coating.
Special dimension	Customized face to face length or dimension
Test and inspection	Third party test report

Electric control valve Type\ Method	Electric actuator
	DKZ series
	Intelligent integrated type
Usage	Regulating
Air supply pressure or Power supply voltage	Power: AC 200V±10% 50Hz Or Power: AC 380V±10% 50Hz
Connector	Normal type: cable inlet 2-PF(G1/2〞) Explosive proof: Protection jacket PF(G3/4〞)
Direct action	Input signal increase, stem descend, valve close.
Reaction	Input signal increase, stem ascend, valve open.
Input signal	Input/output4～20mA.DC
Lag	≤0.8%FS
Linear type	≤+1%FS
Environmental temperature	Standard type: -10℃～+60℃ With space heater : -35℃～+60℃ Explosive proof: -10℃～+40℃
Electric control valve Accessories	Space heater (normal type) Non-standard accessories, need special customized notes.

Nominal diameter DN	25	32	40	50	65	80	100	125	150	200	250	300
Rated flow coefficient Kv	10	16	25	40	63	100	160	250	400	630	1000	1600
Nominal pressure PN MPa	1.6 4 6.4
match DKZ actuator	DKZ-4200		DKZ-4300		DKZ-5400			DKZ-5500			DKZ-5600
match Cepai actuator	A+Z64							A+Z160
Rated travel mm	16		25		40			60			100
Flow characteristic	Equal percentage linear
Action mode	Input signal increase, valve close or opposite
Temperature range	Normal temperature: -20 — +200 degree thermal fin type:-60~450degree

Note: Large size single-seat control valve can be customized according to user requirement

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