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Single Seat Valve RV701 control valve DN 25-250

Single Seat Valve RV701 control valve DN 25-250

RV701 control valve, the RV 701 single-seated control valves is a high performance single seat control valve, which is designed to meet various application requirements.

Description

Single Seat Valve

RV701 control valve, the RV 701 single-seated control valves is a high performance single seat control valve, which is designed to meet various application requirements. 

Product Code: 2014516153049

Process medium

This RV701 control valve is designed to control the flow and pressure of gases, liquids and vapors. When the inlet and outlet flow rates are maintained at a certain allowable range, the single-seated control valve can also be applied to natural gas and steam. Usually the medium includes superheated steam, saturated steam and no special requirements for the material of the valve material. For other applicable medium, please consult the manufacturer as the body material is in contact with process medium.

Application

The application area of this high performance single seat control valve is the continuation of the RV501 series. It is especially suitable for metallurgy, nonferrous metals, petrochemical, electric power, papermaking and other industries.

Installation

The single seat valve installation must make the medium flow and the arrow marked on the valve body in the same direction. The valve can be installed horizontally, vertically and inclined in any position except the actuator position below the valve. DN 250 valve must be installed horizontally and the actuator can not be tilt.

Differential pressure

Taking into account of the pressure balance valve and actuator driving force, when in high differential pressure condition, the application of valve is not subject to media pressure but by the restriction of the throttle system. Using the valve core with a hole and the valve cage with a hole, the maximum recommended differential pressure for each stage of the multi-stage decompression is 4.0Mpa. When using parabolic spool, the maximum differential pressure is 2 Mpa. About the pressure ratio and other equipment specifications, please consult postmaster@wtindustrialeqpt.com for more information.

Maximum allowable working pressure, please refer to below table   [Mpa]

Material

PN

Temperature ℃


100

150

200

250

300

350

400

450

500

550

Cast steel 1.0619

160

13.6

12.7

11.4

10.4

9.40

8.80

8.40

--

--

--

250

21.3

19.8

17.8

16.2

14.7

13.7

13.2

--

--

--

320

27.2

25.4

22.8

20.8

18.8

17.6

16.8




400

34.1

31.7

28.4

26.0

23.5

21.9

21.1

--

--

--

Alloy steel 1.7357

160

16.3

15.8

14.9

14.3

13.3

12.3

11.5

10.7

8.90

3.50

250

25.4

24.8

23.3

22.3

20.8

19.3

18.0

16.7

13.9

5.5

40

4.07

3.96

3.74

3.57

3.33

3.09

2.89

2.67

2.23

0.88

320

32.6

31.6

29.8

28.6

26.6

24.6

23.0

21.4

17.8

7.00

400

40.7

39.6

37.4

35.7

33.3

30.9

28.9

26.7

22.3

8.8


Technical data

Series

RV702

RV/UV 220(EX)

RV /UV 230(EX)

Valve Body type

Single seat, control valve, pressure balance valve core

Nominal diameter

DN 25-250

Nominal pressure

PN 160,250,320

PN 160,250,320,400

Body material

Carbon steel 1.0619(GP 240 GH)

Alloy steel 1.7357(G17CrMo5-5)

Welding end & Flange material

1.425(P 265 GH)

1.7335(13CrMo4-5)

Valve seat material DN 25,50,100,125,150,250

17021.6 (1.4006)

Valve ball material

DN 25,50,100,125,150,250

17123.6 (1.4078)

Working temperature

-20 ----400

-20----- 500℃

Flange connection  

PN 160 DIN 2548(4/1969)PN 250 DIN 2549(4/1969)

PN 320 DIN 2550(4/1969)PN 400 DIN 2551(4/1969)

Flange type

DIN 2526(3/1975) facing flange

Welding end

As per csn 13 1075(3/1991)

Valve inner part Model

Level I, Level III pressure-reducing

Orifice valve ball-valve seat

Flow characteristics

Linear, equal percentage

Leakage level

IV level, as per CSN-EN 1349(5/2001) high grade seal level VI

V level, as per CSN-EN 1349, <0.001% kvs Metal-PTFE seal

Packing

Graphite

NOTE: Flange connection is not applicable for DN250/PN 400.


The range of kv value

DN

25**)

50

100

125

150

250

Multi-stage pressure-reducing

Kvs (m3/h)- linear

1

0.1-8.0

3.2-32

10-125

16-360*

16-360*

40-630

2

0.1-8.0

2.5-32

8.0-125

12.5-500

12.5-250

40-500

3

1.6-8.0

2.0-32

8.0-100

12.5-200

12.5-200

40-400

Multi-stage pressure-reducing

Kvs (m3/h) –equal percentage characteristic

1

0.63-8.0

6.3-25

16-63

32-125

32-125

50-320

2

0.63-6.3

5.0-20

12.5-50

25-80

25-80

50-200

3

1.6-4.0

4.0-16

10-40

20-63

20-63

50-160

*)  It is for PN160 & PN250 ONLY. For PN360 & PN400, the Kvs is 250m3/h
**)  It is for the Kvs range of  0.1-1.6 of customized
valve ball. The valves ranges are listed above.


Welcome to email to postmaster@wtindustrialeqpt.com for quotations or visit http://www.wtindustrialeqpt.com/valves/ for more valves information.

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