PRODUCTS
Your location:Products >> Control valve >> Self-pressure (differential pressure) control valve
Self-pressure (differential pressure) control valve
Model: V231 type
Nominal diameter: DN15 ~ 250mm
Nominal pressure: PN1.6 ~ 4.0 MPa
Temperature: Liquid ≤ 140 ℃, gas ≤ 80 ℃
Main material: cast iron, cast steel, cast stainless steel
Design criteria: GB / T17213
Inspection Standard: GB / T4213
Flange Standard: JIS B220, JB / T79, ANSI B16.5-1981, GB / T9113, HG20594-97, HG20618-97, etc.
Product details

Product description:

Direct acting self-acting pressure (differential pressure) control valve, the valve body, seat, valve components and other components, is a kind of without external energy and only rely on the pressure of the media to be adjusted automatically adjust the pressure of energy savings Type products, can be used for non-corrosive (maximum temperature of 350 ℃) liquid, gas and steam and other media pressure control device. Widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors and urban heating, heating systems.
 

◆ Model, specifications

category

Pressure control valve

Differential pressure control valve

Valve pressure regulator

Valve pressure regulator

Differential pressure rise valve closed

Pressure differential valve opens

Hard seal

Soft seal

Hard seal

Soft seal

Hard seal

Soft seal

Hard seal

Soft seal

model

V230 D01

V230D01

V230D02

V231D02

V230D03

V231D03

V230D04

V231D04

specification

DN15-250


 Technical Parameters:

Nominal diameter mm

15

20

25

32

40

50

65

80

100

125

150

200

250

Rated flow coefficient Kvs

3.2

5

8

12.5

20

32

50

80

125

160

320

450

630

Nominal pressure MPa

1.6, 4.0

Z value

0.6

0.6

0.6

0.55

0.55

0.5

0.5

0.45

0.4

0.35

0.3

0.2

0.2

The highest working temperature ℃

V230 V231

Liquid ≤ 140, gas ≤ 80

Hard seal V230

With isolation tank ≤ 200

With isolation tank and extension pieces ≤ 300 *

With isolation tank and heat sink ≤ 200

Pressure balance element

Corrugated pipe

Rolling the diaphragm

Flange standard

DIA (also available on request flange standard)

Body material

PN16: cast iron (working temperature ≤ 200 ℃);

PN4.0: cast steel, cast stainless steel (working temperature ≤ 350 ℃)

Spool material

Stainless steel; soft seal stainless steel inlaid rubber ring

The maximum working pressure MPa

Nominal pressure (Note △ Pmax and the relationship between working pressure and working temperature)

Note: 
 1, the liquid> 140 ℃, gas> 80 ℃ when the valve flip; 
 2, Z value: noise measurement coefficient, the value used to measure the size of the noise, the specific calculation see the self-regulating valve selection guide.
 

◆ Dimension 
 凯发k8(国际)首页官网
 ◆ V230 / V231 control valve size and weight

Nominal diameter mm

20

25

32

40

50

65

80

100

125

150

200

250

L mm

150

160

180

200

230

290

310

350

400

480

600

730

B mm

212

238

238

240

240

275

275

380

380

295

325

372

Approximate weight kg

6.7

9.7

13

14

17

29

33

60

70

80

140

220

◆ D02 (D04) actuator size and weight

Effective area cm 2

32

80

250

630

D mm

172

172

263

380

H mm

435

430

470

520

Approximate weight kg

7.5

7.5

13

28

凯发k8(国际)首页官网
 ◆ D01 (D03) actuator size and weight

Effective area cm 2

32

80

250

630

D mm

172

172

263

380

H mm

440

435

440

520

Approximate weight kg

7.5

7.5

13

28

Note: Direct acting self-operated valve of the total height and weight for the control valve and actuator height and weight.