Solenoid Valves

Saturated Steam Pressure, Temperature, Density and Thermal Capacity Tables.

Steam (vaporised hot water) occurs normally around 100 °C at sea level (normal Atmospheric pressure) much like your kettle at home for instance. But if you pressurise the system then the water will boil at a higher temperature generally in line with the pressures involved, i.e. the higher the pressure the higher the boiling point. The opposite is also true, if you generate a vacuum water can boil at low ambient temperatures too. 

Steam solenoid valves are designed to work with the high temperatures of steam, but sometimes users do not know the temperature of steam or the pressure of the steam being controlled, so the table below gives a general guide.

Helpful hint: 10 bar steam is 184.5º C (see below table), very important point when choosing your steam solenoid valve.

Pressure
Overpressure Absolute pressure.

Temperature
saturated
steam ts
°C

Thermal

capacity

water
h’
kJ/kg

Vaporization-
heat
r
kJ/kg

Thermal

capacity

steam
h”
kJ/kg

Steam
volume
"
m3/kg

Steam
density
"
kg/m3

Pe
bar

p
bar

 

The over-pressure
relates to an

absolute
atmospheric

ambient
pressure

of 1 bar.

0,01

7,0

29,34

2485

2514

129,2

0,0077

0,05

32,9

137,8

2424

2562

28,19

0,0355

0,1

45,8

191,8

2393

2585

14,67

0,0681

0,2

60,1

251,5

2358

2610

7,650

0,1307

0,3

69,1

289,3

2336

2625

5,229

0,1912

0,4

75,9

317,7

2319

2637

3,993

0,2504

0,5

81,3

340,6

2305

2646

3,240

0,3086

0,6

86,0

359,9

2294

2654

2,732

0,3661

0,7

90,0

376,8

2283

2660

2,365

0,4229

0,8

93,5

391,7

2274

2666

2,087

0,4792

0,9

96,7

405,2

2266

2671

1,869

0,5350

0

1,0

99,6

417

2258

2675

1,694

0,5904

0,1

1,1

102,3

429

2251

2680

1,549

0,6455

0,2

1,2

104,8

439

2244

2683

1,428

0,7002

0,3

1,3

107,1

449

2238

2687

1,325

0,7547

0,4

1,4

109,3

458

2232

2690

1,236

0,8088

0,5

1,5

111,4

467

2226

2693

1,159

0,8628

0,6

1,6

113,3

475

2221

2696

1,091

0,9165

0,7

1,7

115,2

483

2216

2699

1,031

0,9700

0,8

1,8

116,9

491

2211

2702

0,977

1,023

0,9

1,9

118,6

498

2206

2704

0,929

1,076

1,0

2,0

120,2

505

2201

2706

0,885

1,129

1,5

2,5

127,4

535

2181

2716

0,718

1,392

2,0

3,0

133,5

561

2163

2724

0,606

1,651

2,5

3,5

138,9

584

2147

2731

0,524

1,908

3,0

4,0

143,6

605

2133

2738

0,462

2,163

3,5

4,5

147,9

623

2120

2743

0,414

2,417

4,0

5,0

151,8

640

2107

2747

0,375

2,669

4,5

5,5

155,5

656

2096

2752

0,343

2,920

5,0

6,0

158,8

670

2085

2755

0,316

3,170

6

7

165,0

697

2065

2762

0,2727

3,667

7

8

170,4

721

2046

2767

0,2403

4,162

8

9

175,4

743

2029

2772

0,2148

4,655

9

10

179,9

763

2013

2776

0,1943

5,147

10

11

184,1

781

1999

2780

0,1774

5,637

11

12

188,0

798

1984

2782

0,1632

6,127

12

13

191,6

815

1971

2786

0,1511

6,617

13

14

195,0

830

1958

2788

0,1407

7,106

14

15

198,3

845

1945

2790

0,1317

7,596

15

16

201,4

859

1933

2792

0,1237

8,085

16

17

204,3

872

1921

2793

0,1166

8,575

17

18

207,1

885

1910

2795

0,1103

9,065

18

19

209,8

897

1899

2796

0,1047

9,555

19

20

212,4

909

1888

2797

0,0995

10,05

20

21

214,9

920

1878

2798

0,0949

10,54

24

25

223,9

962

1839

2801

0,0799

12,51

25

26

226,0

972

1829

2801

0,0769

13,01

29

30

233,8

1008

1794

2802

0,0666

15,01

30

31

235,7

1017

1785

2802

0,0645

15,51

39

40

250,3

1087

1713

2800

0,0498

20,

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