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SANZHOU PRODUCTS

V230X Self-operated/regulating Differential Pressure Control Valve

V230X  Self-operated/regulating Differential Pressure Control Valve

V230X Self-operated/regulating Differential Pressure Control Valve

Information

 

 
 
 
V230X Self-operated (regulating)differential pressure control valve is composed of control valve body assembly, actuator, positioning spring ,stainless steel bellows, external pressure tap and all that. The valve doesn’t requires any auxiliary energy from external supply sources, by use of medium itself pressure as motive power, it can automatically control and stabilize the medium pressure.
 It is balance single seat type. It is characterized by steady, high regulating accuracy , energy conservation ,sensitive action and convenient to operate and maintain.
It is widely used for the flue gas of industrial boiler combustion system and in the automatically regulating occasion of oil being processing, oil tank protecting gas and heat treatment protecting gas.
        Standard Specifications
 
Body
Type :cast globe type (as shown in figure 1)
Nominal Diameter:DN20、25、32、40、50、65、80、100
Nominal Pressure: GB PN1.0、1.6MPa
           ANSI150
           JIS 10K
           DIN PN16
End connection: flange type HG20596-97M; ANSI B16.5 RF ;DIN2543/2544/2545RF;JIS B2201RF
Face to face dimension: Flange is according to GB/T12221-1989,EN558.1:1995,ISO5752-1982
Body materialWCB、ZG0Cr18Ni9(CF8)、ZG0Cr18Ni12Mo2Ti(CF8M)
Bonnet type:STD type,-10~80℃ ;STD type,-10~80℃ ;Medium temp type(with Every temperature tank ), ≤250℃;high temp type(with Every temperature tank and extensions),≤350℃Packing :V shape PTFE, flexible graphite, o-rings
Seal gasket:Metal winding gasket, metal graphite gaskets, zigzag gasket and flat gasket
Paint: Carbon steel shell surface required to paint, stainless steel or copper surface without paint .
Trim
Plug type: Parabolic plug
Flow characteristics: quick opening
Plug material:0Cr18Ni9(304),0Cr17Ni12Mo2(316)
Seat material:0Cr18Ni9(304),0Cr17Ni12Mo2(316),304+F4,316+F4
Stem material:0Cr17Ni4Cu4Nb(17-4PH),0Cr17Ni12Mo2(316)
Bellows material:0Cr17Ni12Mo2(316),00Cr17Ni14Mo2(316L)
Actuator
Type : Multi-spring diaphragm type 
Pressure Regulating Range: please see table 1
Upper and Lower Case Material:A3、A4 With PTFE、0Cr18Ni9(304)
Diaphragm Rubber:NBR , EPDM , FPM and other oil-resistance rubbers
Spring material: 60Si2Mn
Work temperature:-20~80℃
Performance
Rated CV:As shown in table 1
Seat leakage:Metal seal according to ANSI B16.104 ClassⅣ,less than10-4 of rated Cv, PTFE seat according to ANSI B16.104 Class VI, less than10-7of rated Cv
Pressure Control Precision: ± 5% :
Working Temp:-10~350℃
Rated Travel: see table 1
Shape Size:As shown in figure 2, table 2
Weight of product:As shown in table 2
 
Structure
 
    Figure1 V230X Self-regulating differential pressure control valve 
1、body assembly 2、actuator  3、preset spring
 
                                     
Working principle
V230X Self-operated pressure differential control valve structure as shown in figure 1, it adopts the internal feedback structure, so the medium directly entered into actuator’s diaphragm chamber through the upper bonnet. This action produces a balance power between power of medium contacting diaphragm and spring preset power. If the pressure rises to be higher than the set pressure in the tank, this balance has been broken. So valve’s plug move up and open the valve to bleed the Nitrogen or some other gases to the outside; if the pressure falls to set pressure in the tank, the valve will close because of the preset spring.
 
 
 
 
Table 1 technical parameters

DN(mm)
20
25
32
40
50
65
80
100
Rated flow coefficient Cv
8.1
12.9
35
37
56
88
140
220
Rate travel
8
10
14
20
25
Pressure regulating range KPa
50706080701008511095130110150

 
Shape size and weight
 
Table 2 shape size (mm) and weight (Kg)
 

DN(mm)
25
32
40
50
65
80
100
L
160
180
200
230
290
310
350
A
308
308
308
308
394
394
394
H2
415
415
415
115
415
415
415
H1
60
75
80
85
95
105
120
H
720
730
730
750
790
840
890
Weight
32
35
40
50
90
115
280

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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SHANGHAI SANZHOU AUTOMATION DASH CO.,LTD
ADD:No.2651, Waiqingsong Road, Baihe Town Qingpu District, Shanghai, 201709, P.R.C.
TEL:86-21-59748861
FAX:86-21-59747999
Website:www.szvalves.com
E-mail:info@szvp.cn