SV12-21 Poppet, 2-Way, Normally Open
DESCRIPTION
A solenoid-operated, 2-way, normally open, poppet-type, screw-in hydraulic cartridge
valve, designed to function as a load holding or blocking valve in applications
requiring low internal leakage.
OPERATION
When energized, the SV12-21 acts as a check valve, allowing flow to pass from 1 to
2, while blocking flow in the reverse direction.
When de-energized, the poppet lifts to open the 2 to 1 flow path after overcoming the
solenoid force (requires 3.4 to 10.3 bar / 50 to 150 psi). In this mode, flow from
1 to 2 is severely restricted. If this path is required, see model SV12-23,
page 1.054.1.
Operation of Manual Override Option: To override, push and hold override button.
FEATURES
• Continuous-duty rated solenoid.
• Hardened seat for long life and low leakage.
• Optional coil voltages and terminations.
• Efficient wet-armature construction.
• Cartridges are voltage interchangeable.
• Unitized, molded coil design.
• Manual override option.
• Optional waterproof E-Coils rated up to IP69K.
• Cost effective cavity.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Flow: Up to 114 lpm (30 gpm); see performance chart
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 240 bar (3500 psi)
Temperature: -40 to 120°C with standard Buna seals
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Response Time: First indication of change of state with 100% voltage supplied at
80% of nominal flow rating: Energized: 110 msec.; De-energized: 40 msec.
Initial Coil Current Draw at 20°C: Standard Coil: 1.67 amps at 12 VDC;
0.18 amps at 115 VAC (full wave rectified).
E-Coil: 1.7 amps at 12 VDC; 0.85 amps at 24 VDC
Minimum Pull-in Voltage: 85% of nominal at 240 bar (3500 psi)
Filtration: See page 9.010.1
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
Installation: No restrictions; See page 9.020.1
Cavity: VC12-2; See page 9.112.1
Cavity Tool: CT12-2XX; See page 8.600.1
Seal Kit: SK12-2X-T; See page 8.650.1
Coil Nut: Part No. 7004420;
For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.
ISO:
SYMBOLS
1.035.1
with Sensor:
10.3/150
8.3/120
6.2/90
4.1/60
2.1/30
37.9
10
75.8
20
113.6
30
FLOW lpm/gpm
PRESSURE DROP bar/psi
2 to 1 de-energized ——
1 to 2 energized - - - -
32 cSt/150 sus oil at 40°C
PERFORMANCE (Cartridge Only)
SOLENOID VALVES
HYDRAFORCE
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®
37.9
10
75.8
20
113.6
30
FLOW lpm/gpm
PRESSURE DROP bar/psi
SV12-21 with Sensor
2 to 1 de-energized ——
1 to 2 energized - - - -
32 cSt/150 sus oil at 40°C
27.6/400
20.7/300
13.8/200
6.9/100
VALVE SHIFT %
FLOW
Vcc
SENSOR OUTPUT
Typical Sensor Output vs. Valve Shift
0
0.4 lpm
0.1 gpm
113.6 lpm
30 gpm
68 7350 100
VOUT
Hatched Area: Overlapping Stroke, Leakage Flow
Blue rectangles are links to other catalog pages.
SV12-21
DIMENSIONS
1.035.2
1.62
2.89
41.1
73.4
1.84 (46.7) DIA.
E-Coil
View
Standard
Coil View
TORQUE
5-7 lbf•ft
(6.8-9.5 N•m)
TORQUE
33-37 lbf•ft
(44.7-50.2 N•m)
MATERIALS
Cartridge: Weight: 0.26 kg.
(0.58 lbs.) Weight with
Sensor option: 0.61 kg.
(1.35 lbs.); Steel with hard-
ened work surfaces. Zinc-
plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-up standard.
Standard Ported Body:
Weight: 0.57 kg. (1.25 lbs.)
Anodized high-strength 6061
T6 aluminum alloy, rated to
207 bar (3000 psi). Ductile
iron bodies available; dimen-
sions may differ.
See page 8.012.1
Standard Coil: Weight:
0.27 kg. (0.60 lbs.) Unitized
thermoplastic encapsulated,
Class H high temperature
magnetwire.
See page 3.200.1
E-Coil: Weight: 0.41 kg.
(0.9 lbs.); Fully encapsulated
with rugged external metal
shell. Rated up to IP69K with
integral connectors.
See page 3.400.1.
TO ORDER
®
HYDRAFORCE
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®
Porting
Cartridge Only 0
SAE 12 12T
SV12-
(P)
21
(A)
__ - __ __ __ - __ - __ __ __ __ __ - __ __
Option
None (Blank)
Manual Override P
Manual Override K
Position
Indicator
None (Blank)
Switch P
Restricted Flow A
For Manual Override options
see page 1.001.1
with sensor, valve is rated
3000 psi (207 bar)
Voltage
Std. Coil
0 Less Coil**
10 10 VDC
†
12 12 VDC
24 24 VDC
36 36 VDC
48 48 VDC
24 24 VAC
115 115 VAC
230 230 VAC
**Includes Coil Nut
†
DS, DW or DL
terminations only
E-Coils: 10,12,20
or 24 VDC only.
For Coils with Zener Diode, add “/Z” to option code.
For example: “ER/Z”. Not available on all models.
See coil option info. on pages 3.200.1 & 3.400.1
Coil Termination E-Coil D-Coil
Deutsch DT04-2P ER (IP69K) DR (IP65)
Metri-Pack
®
150 EY (IP69K) DY (IP65)
Dual Lead Wires EL (IP69K) DL (IP65)
Amp Jr. Timer EJ (IP67) —
DIN 43650 EG (IP65) DG (IP65)
Dual Spades — DS (IP65)
Sensor/Connector
(Blank) None
N Neutral Sense/DT04-4P
M Neutral Sense/M12-4P
Mating Connectors:
DT06-4S: Part No. 4001953
M12-4S: available at www.turck.com
or www.binder-usa.com
Seals
N Buna N (Std.)
V Fluorocarbon
Sensor Option: See page 3.010.1
Sensor Type
(Blank) None
3 Dual Output,
N.C./N.O.
Dimensions will differ significantly with Sensor Option; see page 3.010.1.
Blue rectangles are links to other catalog pages.
