1.       Overview

High differential pressure regulating valve is one of the key corollary equipment for the high pressure engineering of large power station and petrochemical processing. This anti-cavitation high differential pressure regulating valve is a new generation of special regulating valve produced to meet the urgent need of various generating units in the power plant, especially the large thermal power plant of the 300/600MW scale and petrochemical plants

2.       Applications

The product mainly applies to the high pressure control system for thermal power boiler and petrochemical processing and can be used as,

Main water supply regulating valve.

Feed water bypass regulating valve.

Water recycling regulating valve.

Desuperheating water regulating valve.

Condensation water recycling regulating valve.

Boiler’s continuous blowdown regulating valve.

High pressure heater regulating valve.

High differential pressure regulating valve for ammonia, urea synthesis

3. Main technical parameters

Inside nominal diameter mm

20

25

32

40

50

65

80

100

150

(175)

250

(225)

Nominal pressure MPa

25,  32

25

working temperature℃

250,   400

Inherent discharge characteristics

Straight line

approximate percentage

Rated discharge

Coefficient Kv

Half capacity

1.25

2.5

5

6

10

15

20

50

100

Full capacity

2.5

5

10

12

20

30

40

100

200

Rated stroke mm

25

40

60

100

Control signal

 Electricity

0～10mA d.c.,   4～20mA d.c.

Gas

20～100KPa,     pressure of gas supply 0.4MPa