DESCRIPTION

A proportional solenoid-operated, 2-way, poppet-type, normally open, screw-in

hydraulic cartridge valve for low-leakage load-holding applications and for starting or

stopping a load or a pump system.

OPERATION

When de-energized, the SP08-21 allows flow from 2 to 1. When the valve is partially

energized, the valve begins to throttle the flow from 2 to 1. When fully energized, the

poppet closes on the seat, blocking flow from 2 to 1. Flow from 1 to 2 will occur when

hydraulic pressure exceeds the solenoid force.

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.

RATINGS

Operating Pressure: 207 bar (3000 psi)

Operating Voltage: See Performance Chart

Flow: 0 to 22.7 lpm (0 to 6 gpm)

Max. Internal Leakage: 5 drops per minute at 207 bar (3000 psi)

Temperature: -40 to 120°C with standard Buna seals

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: 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;

For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.

ELECTRO-PROPORTIONAL VALVES—FLOW CONTROL

SP08-21 Poppet, 2-Way, Normally Open

SYMBOLS

USASI/ISO:

2.020.1

PERFORMANCE

1.4/20

2.8/40

4.1/60

5.5/80

6.9/100

8.3/120

9.7/140

11.0/160

3.8

7.6

11.4

18.9

15.1

FLOW lpm/gpm

PRESSURE bar/psi

PRESSURE DROP 2 to 1

1.5/0.4

3.0/0.8

4.5/1.2

6.1/1.6

7.6/2.0

9.1/2.4

10.6/2.8

500

1000

103

1500

207

3000

172

2500

138

2000

PRESSURE bar/psi

FLOW lpm/gpm

TYPICAL PRESSURE RESPONSE

at 3000 psi with 12 VDC Coil

500 mA

750 mA

7.6/2.0

15.1/4.0

22.7/6.0

30.3/8.0

37.8/10.0

0.2 0.4 0.6 1.00.8

CURRENT amps

FLOW lpm/gpm

CURRENT RESPONSE

Note: Electronic Controller is

required to ramp current.

HYDRAFORCE

.com

Recommended Electronic Controllers:

See page 2.001.1 or our Electronics catalog.

Blue rectangles are links to other catalog pages.

SP08-21

2.020.2

DIMENSIONS

MATERIALS

Cartridge: Weight: 0.11 kg.

(0.25 lbs.) Steel with hardened

work surfaces. Zinc-plated

exposed surfaces Buna N

O-rings and back-ups standard.

Standard Ported Body: Weight:

0.16 kg. (0.35 lbs.) Anodized

high-strength 6061 T6 aluminum

alloy, rated to 207 bar (3000 psi).

Ductile iron bodies available;

dimensions may differ.

See page 8.008.1.

Standard Coil: Weight: 0.11 kg.

(0.25 lbs.) Unitized thermoplas-

tic encapsulated, Class H high

temperature magnetwire.

See page 3.200.1

E-Coil: Weight: 0.14 kg. (0.3 lbs.)

Perfect wound, fully encapsu-

lated with rugged external metal

shell. Rated up to IP69K with

integral connectors.

See page 3.400.1

SP08-21 - __ __ __ - __ - __ __ __ __ __

TO ORDER

Porting

Cartridge Only 0

SAE 4 4T

SAE 6 6T

1/4 in. BSP* 2B

3/8 in. BSP* 3B

*BSP Body; U.K. Mfr. Only

Seals

Buna N (Std.) N

Fluorocarbon V

Polyurethane P

Termination (VDC)

Std. Coil

DS Dual Spades

DG DIN 43650

DL Leadwires (2)

DL/W Leads w/Weatherpak

Connectors

DR Deutsch DT04-2P

Termination (VDC)

E-Coil

ER Deutsch DT04-2P

(IP69K Rated)

EY Metri-Pack

® 150.2A

(IP69K Rated)

Coils with internal diode are

available. Consult factory.

HYDRAFORCE

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Voltage

0 Less Coil**

10 10 VDC

†

12 12 VDC

20 20 VDC

†

24 24 VDC

**Includes Coil Nut

†

10 VDC and 20

VDC coils should

be used for most

continuous-duty

applications.

Consult factory.

1.40

35.6

2.74

TORQUE

4–5 ft-lbs

(5.4–6.8 Nm)

max.

TORQUE

19–21 ft-lbs

(25.8–28.5 Nm)

max.

69.6

1.41

DIA.

35.8

Standard

Coil View

E-Coil

View

Blue rectangles are links to other catalog pages.