15
Kv Seat Seat Tube Actuator NO NC
area diam. connections (type no.) Piston thrust (N), Piston
(cm
2
) (mm) (mm) at air pressure (bar) thrust
ISO DIN NO NC 3.0 4.0 5.0 6.0 spring (N)
0,5 E 0.3 6 38 40 3277-5 3277-5 800 2 000 3 200 4 400 1 500
1,0 E 0.8 10 38 40 3277-5 3277-5 800 2 000 3 200 4 400 1 500
2 E 1.1 12 38 40 3277-5 3277-5 800 2 000 3 200 4 400 1 500
4 E 1.5 14 38 40 3277-5 3277-5 800 2 000 3 200 4 400 1 500
8 E 4.2 23 38 40 3277-5 3277-5 800 2 000 3 200 4 400 1 500
16 E 6.6 29 38 40 3277-5 3277-5 800 2 000 3 200 4 400 1 500
32 E 18.5 48,5 51 50 3277-5 3277-5 800 2 000 3 200 4 400 1 500
64 L 20.5 51 63,5 65 3277-5 3277-5 800 2 000 3 200 4 400 1 500
75 L 20.5 51 76 80 3277-5 3277-5 800 2 000 3 200 4 400 1 500
110 L 40.7 72 101,6 100 3277-5 3277* 800 2 000 3 200 4 400 2 800
*) Effective diaphragm area = 350 cm
2
(all others = 120 cm
2
).
What product pressure below the plug will open the valve?
P= (kPa)
Example:
Kv 32E , 4 bar air pressure (NO), A = 18.5 cm², F = 2000 N
Þ P = = 1080 kPa » 10.8 bar
The valve opens at product pressure above 10 bar.
It is important to observe the technical data during
installation, operation and maintenance.
Inform the personnel about the technical data.
NO = Normally open.
NC = Normally closed.
Technical data
2. Selection / Pressure drop - capacity diagram
NOTE!
Different springs are available for different actuator thrusts.
Always return the actuator to the supplier if changing the springs.
P = Product pressure (bar)
A = Seat area (cm²)
d = Seat diameter (mm)
F = Piston thrust (N)
Pressure Drop Calculation
The Kv designation is the flow rate in m
3
/h at
a pressure drop of 1 bar when the valve is fully
open (water at 20
0
C or similar liquids).
The Kv value at other pressure drops is
calculated according to the following formular:
Kvq = Q
ÖD p
Where:
Kvq= Flow coefficient (m
3
/h at D p = 1 bar).
Q = Flow rate (m
3
/h).
D p = Pressure drop over valve (bar).
F x 10
A
2000 x 10
18.5
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