DESCRIPTION
A proportional solenoid-operated, two-way, poppet-type, normally closed, screw-in
hydraulic cartridge valve for low-leakage blocking and load-holding applications
OPERATION
When de-energized, the SP08-20A acts as a check valve, allowing flow from 1 to 2,
and blocking flow from 2 to 1. When energized, the 2 to 1 flow path is opened.
Flow is proportional to current applied to the coil. Flow varies with manual override.
Note: If low voltage is expected on the machine, 12 or 24 volt systems will
require the use of 10 volt or 20 volt coils respectively. See “SP Valves and Coil
Operating Parameters,” page 2.002.1.
FEATURES
• Industry-common cavity. • Efficient wet-armature construction.
• Continuous-duty rated coils. • Optional waterproof E-Coils rated up to IP69K.
• Manual override option.
RATINGS
Operating Pressure: 207 bar (3000 psi)
Flow: 30.3 lpm (8 gpm) nominal; see performance charts
Minimum Operating Dither/Pulse Frequency: 70 Hz
Hysteresis: Less than 5% up to 85% of I-max.; Less than 10% above 85% of I-max.
Max. Internal Leakage: 5 drops per minute at 207 bar (3000 psi)
Operating Temperature: -40 to 100°C (-40° to 212°F) with standard Buna N seals
-26 to 204°C (-15°F to 400°F) with Fluorocarbon seals
-54 to 107°C (-65°F to 225°F) with Polyurethane seals
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Filtration: See page 9.010.1; Installation: No Restrictions. See page 9.020.1
Cavity: VC08-2; See page 9.108.1; Cavity Tool: CT08-2XX; See page 8.600.1
Seal Kit: SK08-2X-T; See page 8.650.1
Coil Nut: Part No. 7004400
ELECTRO-PROPORTIONAL VALVES—FLOW CONTROL
SP08-20A Poppet, 2-Way, Normally Closed
SYMBOL
2.009.1
PERFORMANCE
FLOW lpm/gpm
75.6/20.0
68.0/18.0
60.5/16.0
52.9/14.0
45.4/12.0
37.8/10.0
30.2/8.0
22.7/6.0
15.1/4.0
7.6/2.0
0
FLOW vs. CURRENT at Various Differential Pressures
32 cSt/150 sus oil at 40C
PERCENT of MAX. CONTROL CURRENT
AMP (12 Volt Coil) 100 Hz Dither
10 20 30 40 50 60 70 80 90 100 110
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
207 bar
3000 psi
104 bar
1500 psi
34.5 bar
500 psi
10.3 bar
150 psi
Nominal Flow Rating
11.4/3
22.7/6
34.1/9
45.4/12
56.8/15
68.1/18
35
500
69
1000
103
1500
207
3000
172
2500
138
2000
FLOW lpm/gpm
TYPICAL PRESSURE RESPONSE
at 3000 psi with 12 VDC Coil
0.50A
0.65A
0.80A
1.00A
2.8/40
5.5/80
8.3/120
11.0/160
13.8/200
16.6/240
19.3/280
22.1/320
7.6
2
15.1
4
22.7
6
30.3
8
FLOW lpm/gpm
PRESSURE bar/psi
WIDE OPEN PRESSURE DROP
2 to 1 at 1.2A, 12 VDC Coil
MAX.
MIN.
HYDRAFORCE
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