Danfoss CP640-1 Technical Information
Directional Control Valves Technical Information
02
1
3
3
1
4
2
4
2
Directional Manual, Rotary, 2-Position, 4-Way
CP640-1
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This valve is a 3 position 4 way manual
directional control. Handle rotated full
counterclockwise, ows 1<->4 & 2<->3.
Handle rotated full clockwise, ows
1<->2 & 3<->4.
Refer to application notes for installation
details.
Theoretical performance
psi bar
406
348
290
232
174
116
58
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
28
24
20
16
12
Press ure drop
8
4
0
812162
4L/min
1.1US gal/min
2.1 3.2 4.25.3 6.3
Flow
4
Cross-sectional view
Schematic
Spool = 1Spool = 4
4
1
3
4
2
2
1
3
Spool = 3Spool = 5
Spool = 2
3
1
2
4
Specications
Rated pressure 210 bar [3000 psi]
Rated ow at 7 bar
[100 psi]
Leakage 82 cm³/min [5 in³/min] @
Weight 0.35 kg [0.77 lb]
Cavity SDC10-4
10 l/min
[3 US gal/min]
Rated pressure
7/8-14 UNF
t 5-7 N.m
[40-60 in.lbs.]
1
3
2
4
82.6
[3.25]
ORDERING
INFORMATION
ht1.00 in
41-48 N.m
[30-35 lbf.ft]
62.7
[2.47]
43.9
Ø
[1.73]
66.8
[2.63]
CP640-1-B-8S-3-3-D
Detent
D=Detent with handle
Seals
Seal kit
B=Buna-N 120023
V=Viton 120024
Housing and po
rtsHousing P/N
0=No Housing No Housing
LE3B = AL,3/8 BSP SDC10-4-L-3B
LE4B = AL,1/2 BSP SDC10-4-L-4B
6S = AL,#6 SAE SDC10-4-6S
8S = AL,#8 SAE SDC10-4-8S
Other housings available
K=Knob (not shown)
knob is not detented
Position
2=2Position detent
3=3Position detent
Spool
1=Tandem
2=2 position
3=All open
4=All closed
5=Motor
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