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SANZHOU PRODUCTS

V230Z Self-operated/regulating Pressure Control Valve

V230Z Self-operated/regulating Pressure Control Valve

V230Z Self-operated/regulating Pressure Control Valve

Information

 

V230Z Self-operated pressure control valve is composed of 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 may be suitable for steam, non-corrosive gas , liquid and steam in various process systems.
Main features:
1 Pressure balance function ensure high sensitivity
2 Reliablyhandling with low noise and free maintenance
3 standard modular design
4 it has multiple composite controls through combinations of different components
 
        Standard Specifications
 
Body
Type :cast globe valve (as shown in figure 1)
Nominal diameter :DN20,25,32,40,50,65,80,100,125,150,200,250,300
Nominal pressure : GB PN1.6,2.5,4.0MPa
           ANSI150,300
           JIS 10K,20K,30K
           DIN PN16,PN25,PN40
End connection: flange HG20596-97M,FM; ANSI B16.5 RF ;DIN2543/2544/2545RF;JIS B2201RF
Face to face dimension:  please refer to table 2
Body material: WCB,ZG0Cr18Ni9(CF8),ZG0Cr18Ni12Mo2Ti(CF8M)
Bonnet type: STD type-1080Middle temp. typewith condenser ) ≤250℃;High temp. typewith condenser and extensions),≤350℃
Packing material: V shape PTFE, flexible graphite, o-rings
Seal gasket : Spiral wound gasket, Graphite with metal gasket, Zigzag gasket, Flat gasket.
Paint:       Carbon steel shell surface required to paint, stainless steel or copper surface without paint .
 
Trim  
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)
Push rod material:2Cr13(420),0Cr17Ni12Mo2(316)
Bellows material:0Cr17Ni12Mo2(316),00Cr17Ni14Mo2(316L)
Actuator
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
Cylinder Material: 20,0Cr18Ni9(304),0Cr17Ni12Mo2(316)
Piston Material :aluminum alloy
Spring Material: 60Si2Mn
Work temperature:-2080
 
Performance
Rated Cv: As shown in table 1
Pressure Control Precision : ± 3%.
WorkingTemp:-10350
Rated Travel: see table 1
Shape Size: As shown in figure 3, table 2
Weight of product: As shown in table 2
 
Body structure
 
Single seat balance type              Cage balance type         Double seat balance
                             Figure1 V230Z Structure
1.stem 2.bellow   3.plug    4.seat      5.body
Table 1 Technical  parameters
 DN(mm)
20
25
32
40
50
65
80
100
125
150
200
250
300
Rated flow coefficient Cv
8.2
12.9
23.4
35
56.
88
140
222
351
562
889
1287
2047
Rate travel (mm)
8
10
20
25
40
50
60
70
Pressure regulating range KPa
1550,4080,60100,80140,120180,160220,
200260,240300,330400,380450,430500,480560
540620,600700,680800,780900,8801000,9001500,16002500
Pressure-reducing ratio
Max
10
Min
1.25
 
        Principle of operation
1. Pressure regulator type
The process medium flows through the valve in indicated direction.The position of the valve plug determines the flow rate between the free area formed by plug and seat.The downstream pressure to be controlled is transmitted via pressure tap to the operating diaphragm where it is converted into a positioning force. This force adjusts the valve plug as a function of positioning spring force.the spring force can be adjusted using the set point nut.The pressure balanced structure can balanced out the forces created by the upstream pressure and acting on the valve plug.The downstream pressure is balance via the diaphragm area in the actuator.
2. Pressure relief type
The process medium flows through the valve in indicated direction.The position of the valve plug and the area released between plug and seat determine the flow rate. The operating diaphragm is tensioned by positioning spring and set point nut,so that the valve is closed by the spring force before relieved of pressure. The upstream pressure to be controlled is transmitted via pressure tap to the operating diaphragm where it is converted into a positioning force. This force is used for moving the vlave plug up according to the force of the positioning spring.When the force resulting from the upstream pressure rises above the adjusted set point, the valve opens propotionally to the change in pressure. Upstream and downstream pressures acting on the plug are balanced.
        Examples of application
 
                              Figure 2 Applications of aV230Z self-operated control valve
A  Gas pressure relief(K type) ,no need of filter.
B Gas pressure regulator(B type), no need of filter.
C Liquid pressure relief(K type),in need of filter for unclean liquid.
D Liquid pressure regulator(B type),in need of filter for unclean liquid.
E  Steam pressure relief(K type),in need of condenser ,and filter is recommended.
F Steam pressure regulator(B type),in need of condenser ,and filter is recommended.
NOTE: 1 filter 2 self-operated control valve 3 external pressure tap 4 condenser
 
■ Shape size and Weight
 
 
 
 
降温罐:condenser
 Figure3 V230Z self-operated control valve and its equipped condenser shape
 
 
 
 
Table 2 shape size (mm) and weight (Kg)
DN(mm)
20
25
32
40
50
65
80
100
125
150
200
250
300
L
PN1.6MPa/ANSI150
185
200
205
222
254
276
298
352
410
451
600
670
735
PN4.0MPa/ANSI300
194
205
210
230
267
292
310
368
425
460
615
685
750
H
615
645
650
710
730
745
760
800
890
960
1050
1520
1600
d
Φ100
h
280
Weight
PN1.6MPa/ANSI150
6.7
9.7
13
14
17
29
39
60
70
80
140
220
275
PN4.0MPa/ANSI300
8
11.5
15.5
17
20.5
35
47
72
84
96
168
264
330

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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
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