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 Valves Home    Technical Data    Engineering Data 

Solenoid Valve Helpful Engineering Data

Solenoid Valve Engineering Data

Liquid Flow Formulae

Air Flow Formulae

Q=Cv x Sq Rt (DP/d) or DP=d(Q/Cv)2

Where DP less than P1/2

Where DP equal to P1/2

Q=1.69Kv x Sq Rt (DPxP2)

Q = 0.84Kv x P1

Q = Flow L/Min

DP = Pressure Drop (Bar)

d = density i.e. Water = 1

Cv = flow factor coefficient of valve (L/Min)

(N.B. DP 5 - 10% is preferred)

Q = Flow (M3 Hr)
DP = Pressure Drop (Bar)
Kv = flow factor coefficient of valve (M3 Hr)
P1 = inlet pressure + 1 bar
P = absolute downstream pressure =
(inlet pressure + 1 bar - DP)

Saybolt Universal (seconds)

Engler (degrees)

Kinematic (centistokes)

Saybolt Universal (seconds)

Engler (degrees)

Kinematic (centistokes)

-

1.05*

1.5

103

3.0

21.3

34

1.15*

2.5

109

3.2

22.8

37

1.25*

3.4

115

3.4

24.1

40

1.3*

4.2

125

3.7

26.7

42

1.4*

5.0

137

4.0

29.2

45

1.45*

5.7

148

4.3

31.7

50

1.6*

7.5

160

4.6

34.2

57

1.8*

9.4

171

4.9

36.8

62

1.9

11.0

183

5.2

39

68

2.1

12.6

205

5.9

44

74

2.2

14.2

242

7

50

79

2.4

15.5

256

7.3

55

85

2.6

17.0

285

8.1

62

92

2.7

18.6

313

8.9

68

98

2.9

20.0

342

9.8

74

PRESSURE

 1 Bar = 14.5 PSI

1 Bar = 100 kPa (Kilopascal)

1 PSI = 6.9 kPa

1 Kg/cm = 0.98 Bar

1 Atmosphere = 1.013 Bar

1 Inch Water gauge = 2.49 mbar

1 mm Mercury = 1.33 mbar

1 Ton / in = 154 Bar
 

 Volume

 1 Gallon (UK) = 4.54 Litres

1 Gallon (USA) = 3.79 Litres

1 Pint (UK) = 0.57 Litres

1 Pint (USA) = 0.47 Litres

1 Fluid Once (UK) = 28.4 cm

1 Fluid Once (USA) = 29.6 cm
 

FLOW

1 CFM = 0.472 Litres a second

1 CFM = 0.000472 m/Sec

1 CFM = 28.32 Litres a minute
 

 Temperature

 From F to C

Add 40 then multiply by 5

then divide by 9 then -40

 From C to F

Multiply by 9 then 40
divide by 5 then +40
 

  Length

1 Inch = 25.4mm

1/16 Inch = 1.5875mm

1 foot = 0.305 Meters
1 Mile = 1.609 Kilometre

Degrees Of Protection Provided By Electrical Enclosures (IP rating

1st No

Definition

Test Type

2nd No

Definition

Test Type

 1

 Protected against objects
50mm

 Connexion IP10 Rating

 1

Protected against 
vertically falling water drops 

 Connexion IP01 Rating

 2

 Protected against objects
12.5mm

 Connexion IP20 Rating

 2

 Protected against 
vertically falling water
drops up to 15 degrees inclination 

 Connexion IP02 Rating

 3

 Protected against objects
2.5mm

 Connexion IP30 Rating

 3

 Protected against vertically falling
water drops up to 60
degrees inclination

 Connexion IP03 Rating

 4

 Protected against objects
1mm

 Connexion IP40 Rating

 4

 Protected against splashed water
in any direction

 Connexion IP04 Rating

 5

 Dust Protected

 Connexion IP50 Rating

 5

 Protected against water jets
from any direction

 Connexion IP05 Rating

 6

 Dust Tight

 Connexion IP60 Rating

 6

 Protected against powerful
water jets from
any direction

 Connexion IP06 Rating

 

 

 

 7

 Protected against temporary
water immersion

 Connexion IP07 Rating

 

 

 

8

Protected against the
effects
of submersion
Connexion IP08 Rating
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3/2 Coax Solenoid Valves

3/2 coax valves sizes 1/4 to 2" Thread or Flange Click here for Coaxial Valves

 

2/2 Coax Air Valves

2/2 Coaxial Pneumatic Valves

Sizes 1/4 to 2" thread and flange Click here for Coaxial Valves

 

3/2 Coax Air Valves

3/2 Coaxial Pneumatic Valves

Sizes 1/4 to 2" thread and flange Click here for Coaxial Valves

 
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