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C_FLUID CONTROL CATALOGUE
>
2018
General terms and conditions for sale are available on
www.camozzi.com.a
APPENDIX
Class
maximum number of particles/m
3
FED STD 209E
≥ 0.5 µm ≥ 1 µm
≥ 5 µm
ISO 7
352,000
83,200
2,930
Class 10,000
APPENDIX >
Info
OX1:
non-volatile residue equal to or less than 550 mg/m
2
Level OX1: ultrasonic cleaning of components, inspection
with UV black light, lubrication (only if necessary for the product’s operation)
with a specific grease suitable to be used with oxygen.
Assembly, testing and packaging outside the clean room.
OX2:
non-volatile residue equal to or less than 33 mg/m
2
Level OX2: ultrasonic cleaning of components, inspection with UV black light,
lubrication (only if necessary for the product’s operation) with a specific
grease suitable to be used with oxygen.
Assembly, testing and packaging inside a clean room with ISO 7
classification according to ISO 14644-1.
SPECIFICATIONS OF CAMOZZI CLEAN ROOM
a
/2
10
SOLENOID VALVES DIMENSIONING
a) Solenoid valves for fluids:
Flow:
ΔP
γ
Q = Kv
•
Flow factor:
γ
ΔP
Kv = Q
•
where:
Q = m
3
/h
Δ
P = bar
γ
= Kg/dm
3
In case of liquids with viscosity higher than 3°E (22 c Stokes), Kv changes
according to the following formula:
Kv
1
= Kv + C
where C is the viscosity correction factor that is calculated through the
formula:
C =
Kv
δ
•
200
•
Q
+ 1
where:
δ
= kinematic viscosity of the fluid in Centistokes
Kv = flow factor of the solenoid valve
Q = flow l/m
Load loss:
ΔP =
γ
•
Q
Kv
b) Solenoid valves for gases:
If ΔP ≤ 1/2 P
1
use the following formula
Flow:
ΔP
•
P
2
γ
n
•
(273 + t)
Qn = 514
•
Kv
•
Flow factor:
(273 + t)
•
γ
n
ΔP
•
P
2
Kv =
Qn
514
•
where:
Qn = Nm
3
/h
P
1
= bar
P
2
= bar
t = °C
γ
n = Kg/m
3
Load loss:
ΔP =
(273 + t)
•
γ
n
P
2
•
Qn
2
(514
•
Kv)
2
If
Δ
P > 1/2 P
1
use the following formula
ΔP
•
P
2
(273 + t)
•
γ
n
Qn = 757
•
Kv
•