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Electric single seat control valve


Product model: ZSAP

Nominal diameter: NPS 1-1 / 2 "~ 24" (DN20 ~ DN300)

Nominal pressure: CLASS150 ~ CLASS600 (PN16 ~ PN100)

Applicable temperature: - 196 ℃ ~ 540 ℃

Flow characteristics: equal percentage

Gland type: bolt compression type

Main materials: carbon steel, stainless steel, duplex stainless steel, Inconel, Monel, Hastelloy, Ti, etc

Flange standard: PN1.6 according to JB79-59 standard, PN4.0 according to JB79-59 standard

Bonnet type: standard type, extended type, low temperature type, bellows, insulation jacket type




PRODUCT OVERVIEW

The electric single seat regulating valve adopts the fluid pressure unbalanced valve core structure, and the special single seat valve core and cage top guided valve internals combined structure, which not only has the characteristics of single seat regulating valve, but also has the dynamic stability of sleeve regulating valve. The cage guiding sleeve also plays the role of anti scouring and air defense; The quick release valve trim assembly is very convenient for the renewal of trim. It is suitable for small gauge, high pressure difference, high temperature and other harsh working conditions, especially for all kinds of slurry, polymer and high temperature media. It is widely used in automatic control systems such as large thermal power plants, chemical plants, water treatment and sewage treatment, natural gas oil fields, steel plants and so on.


MAIN TECHNICAL PARAMETERS

Nominal diameter(DN)20253240506580100125150200250300
Seat diameter(dn)20253240506580100125150200250300
Rated flow coefficient(KV)Single seat6.91117.627.544691101762754406308751250
Sleeve6.310162540631001602503605708501180
Nominal pressure(MPa)1.6、2.5、4.0、6.4、10.0、16.0、25.0
Rated stroke(mm)16254060100
Bonnet formStandard type (- 17 ~ + 250 ℃), high temperature type (+ 250 ~ + 450 ℃), low temperature type (- 40 ~ - 196 ℃), bellows sealing type (- 40 ~ + 350 ℃)
Gland typeBolt compression type
Sealing packingV-type PTFE packing, V-type flexible graphite packing
Sealing packingSingle seat, cage and sleeve type
Flow characteristicsEqual percentage
Allowable differential pressure(MPa)Single seat3.83.23.02.01.81.51.41.00,70.60.50.30.1
Sleeve6.46.45.25.24.64.63.73.73.53.13.12.62.2
Configure actuator categoryGerman PS, British rotoc, German Eurocode, Siemens and other electric actuators
Actuator parametersPower supply voltage: 220V, 380V, input signal: 4-20mA or 1-5V · DC, output signal: 4-20mA · DC
Protection grade: equivalent to IP65, IP67, flameproof sign: Exd Ⅱ BT4 (Exd Ⅱ BT6 specially customized), manual operation function: handle
Ambient temperature: - 25 ~ + 70 ℃, ambient humidity: ≤ 95%


MATERIAL OF MAIN PARTS

1Valve bodyWCB304316316L
2ShimPTFE\Graphite gasketPTFE\Graphite gasketPTFE\Graphite gasketPTFE\Graphite gasket
3Seat / sleeve304304316316L
4Spool304304316316L
5Guide sleeve / cap304304316316L
6Middle cushionPTFE\Graphite gasketPTFE\Graphite gasketPTFE\Graphite gasketPTFE\Graphite gasket
7Valve coverWCB304316316L
8Valve stem304304316316L
9Metal pad304304316316L
10FillerPTFE/GraphitePTFE/GraphitePTFE/GraphitePTFE/Graphite
11Bolt25Stainless steelStainless steelStainless steel
12Packing glandWCB304316316L

     
MAIN PERFORMANCE INDEXES

ProjectIndex value
Basic error%±1.0
Return difference%1.0
Deadband%1.0
Deviation from starting point%Power onStarting point±1.0End±1.0
Starting point±1.0End±1.0
Power offStarting point±1.0
End±1.0
Rated stroke deviation%≤1.0
Leakage L / h0.01%×Valve rated capacity
Adjustable range R30：1


Main connection dimensions

Nominal diameter(DN)20253240506580100125150200250300
LPN16/25181184200222254276298352410451600640880
PN40194197200235267292317368425473610760910
PN64206200210251286311337394440508650810950
HPN16/2552.557.5757585.592.5100110142.5158170195230
PN4052.557.5757582.592.5100117.5150167.5187.5205245
PN646540858590102.5107.5125172.5195207.5230260
H1132132158170179214221234270294331390450
H2503533512512620575570570555555570756756
D460530630

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