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Pressure controlled valves 398 ASCO

3-way, 1/2 "-2", Universal, for pressure difference 0-40 bar

FEATURES

• Ruggedly built valve, particularly recommended for use with steam, superheated water, corrosive fl uids
• High-performance, maintenance-free stuffi ng box, resistant to thermal shock
• Mixer function (two pressure inlets at 1 or 3, one outlet at 2) or distributor function (one pressure inlet at 2, two outlets at 1 and 3)
• Vacuum operation up to 10-2 mbar • Allowable backpressure: up to 40 bar
• Optical position indicator as standard
• Autoclavable valve for use at high ambient temperatures (up to 180°C)
• The valves satisfy Pressure Equipment Directive 97/23/EC, category 1 (DN > 32) or article 3.3 (DN ≤ 32)

Fluids (*)

DN15 - 25: air and gas groups 1 and 2

DN32-50: air and gas group 2

All dimensions: oil, liquid groups 1 and 2, steam

Temperature range

-10… +250 °C

Pressure difference

0 – 40 bar [1 bar = 100 kPa]

Maxim. operating pressure

40 bar (restrictions, see data sheet)

Ambient temperature

-25 °C… +180 °C

Maxim. viscosity

5000 cSt (mm2/s)

Pilot gas

Air

Max. pilot pressure

10 bar

Disc seal

Bronze, PTFE

Sales information

Wermundsen OÜ
Mustamäe tee 55
EE-10620 Tallinn, Estonia
Tel: (+372) 601 4202
wermundsen@wermundsen.ee

Product images

Manufacturer's homepage


Additional information

PDF icon e398.pdfPDF icon t398.pdf

Flange connection

DN

Pipe size

Flow factor Kv

Pilot pressure

(bar)

Pressure difference

Operator diameter

Model

Mixer

Distributor

3 ➝ 2

1 ➝ 2

2➝ 3

2 ➝ 1

DIN

ANSI 300

(mm)

(m3 / h)

(L / min.)

(m3 / h)

(L / min.)

(m3 / h)

(L / min.)

(m3 / h)

(L / min.)

min.

max.

(bar)

(mm)

U, UNIVERSAL

15

20

25

32

40

50

15

20

25

32

40

50

3,3

8,0

11,4

18,9

27

51

54

133

190

316

450

850

4,4

7,4

11,6

16,6

27

51

73

123

194

278

450

850

3,5

8,1

12,1

17,9

27

51

59

136

203

299

450

850

4,6

7,7

11,9

16,6

27

51

78

129

199

278

450

850

*

*

*

*

*

*

10

10

10

10

10

10

40

40

40

40

40

40

80

100

100

150

150

200

T398A001

T398A002

T398A003

T398A004

T398A005

T398A006

T398A007

T398A008

T398A009

T398A010

T398A011

T398A012

With threaded connection

U, UNIVERSAL 

1/2

3/4

1

1 1/4

1 1/2

2

15

20

25

32

40

50

3,3

8,0

11,4

18,9

27

51

54

133

190

316

450

850

4,4

7,4

11,6

16,6

27

51

73

123

194

278

450

850

3,5

8,1

12,1

17,9

27

51

59

136

203

299

450

850

4,6

7,7

11,9

16,6

27

51

78

129

199

278

450

850

*

*

*

*

*

*

10

10

10

10

10

10

40

40

40

40

40

40

80

100

100

150

150

200

E398A001

E398A002

E398A003

E398A004

E398A005

E398A006

• Also available with welded connection

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