Symbol
Desctiption
A solenoid-operated, 2 port, normally closed, direct-acting, poppet-type, screw in
hydraulic cartridge valve, designed for low-leakage blocking and load-holding
applications to operate as a bidirectional blocking valve in low flow circuits.
Operation
When de-energized, the SF08-28 blocks flow in both directions. When energized, the
poppet shifts to open the bidirectional flow path.
Manual Override Operation
Emergency use only! Not for continuous duty operation. to activate the "T" manual
override: turn the knurled adjustment knob clockwise until the valve opens. To deactivate:
turn the adjustment knob counterclockwise until it stops. To activate the "P" and "K"
manual override: push until the valve opens. To deactivate: remove the applied force
from the manual override.
Features
Flow rating 11.3 lpm (3 gpm), peak flow up to 39 lpm (10.4 gpm)
Pushbutton (P), Knob ( K), and Threaded (T) manual override options
Tested to 2 million cycles
Less than 5 drops/min leakage maintained after endurance test
Overview
Ratings
Pr e ssure Ratings
Pressure rating
345 bar (5000 psi)
Proof pressure
690 bar (10,000 psi)
Burst pressure
1379 bar (20,000 psi)
Flow Ratings
Flow rating
11.3 lpm (3 gpm) - Note : See performance graph for shifting limits.
Maximum internal leakage
5 drops/min - Note : At 345 bar (5000 psi)
Te mpe ratur e Ratings
Operating fluid temperature
-40 to 100 ° C (-40 to 212 ° F - Note : Buna N Seals
-26 to 204 ° C (-15 to 400 ° F - Note : Fluorocarbon Seals
--54 to 107 °C (-54 to 225 °F - Note : Polyurethane Seals
Storage temperature
-40 to 70 ° C (-40 to 160 ° F)
Ambient temperature
-40 to 70 ° C (-40 to 160 ° F)
Operating Parameters
Fluids
Compatible fluids
Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination
level
18/16/13 per ISO 4406
SF08-28
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SOLENOID CARTRIDGE VALVE POPPET, 2 PORT, NORM ALLY CLOSED
hydraforce.com
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SF08-28
Properties
Corrosion protection
12 hr salt spray per ASTM B 633
Unit weight
0.18 kg (0.39 lb)
Internal wetted surface area
85 cm² (18.6 in²)
Performance
SF08-28
hydraforce.com
SOLENOID CARTRIDGE VALVE POPPET, 2 PORT, NORM ALLY CLOSED
hydraforce.com
24OCT2023 16:48
SF08-28
Dimensions
Installation Specifications
Cavity
VC08-2
Cartridge installation torque
25.8 to 28.6 N-m (19 to 21 ft-lb)
Coil nut torque
5.4 to 6.8 N-m (4 to 5 ft-lb)
Orientation restrictions
None
Accessories
Seal kit
SK08-2X- M ( X = Seal option)
Order Code
SF08-28
hydraforce.com
SOLENOID CARTRIDGE VALVE POPPET, 2 PORT, NORM ALLY CLOSED
hydraforce.com
24OCT2023 16:48
SF08-28
Model Options
SF08-28EG-H-J-L
E Manual Override
CODE DESCRIPTION
BLANK NONE
P Push button
K Knob
T
Threaded
adjus tment
G Screen
CODE DESCRIPTION
BLANK NONE
S Screen
H Line Body
CODE DESCRIPTION
0 No Body
4T Aluminum SAE 4
6T Aluminum SAE 6
8T Aluminum SAE 8
6TD Ductile Iron SAE 6
8TD Ductile Iron SAE 8
2B Aluminum BSPP 1/4" (2)
3B Aluminum BSPP 3/8" (3)
3BD
Ductile Iron BSPP 3/8"
(3)
J Seal
SF08-28
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SOLENOID CARTRIDGE VALVE POPPET, 2 PORT, NORM ALLY CLOSED
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SF08-28
CODE DESCRIPTION
N Buna-N
V Fluorocarbon
P Polyurethane
L Coil
CODE DESCRIPTION
00 No Coil
10DL 10 VDC, D-Coil, Dual Lead Wires
10DR/D 10 VDC, D-Coil, Deuts ch with Diode
10DS 10 VDC, D-Coil, Dual Spade
10EL 10 VDC, E-Coil, Dual Lead Wires, 18 inches long
10EL/36 10 VDC, E-Coil, Dual Lead Wires, 36 inches long
10ER 10 VDC, E-Coil, Deuts ch
10ER/Z 10 VDC, E-Coil, Deuts ch with Zener Diode
12DG 12 VDC, D-Coil, DIN 43650
12DL 12 VDC, D-Coil, Dual Lead Wires, 18 inches long
12DL/36 12 VDC, D-Coil, Dual Lead Wires, 36 inches long
12DL/W 12 VDC, D-Coil, Dual Lead Wires with Weatherpak
12DL/W/D
12 VDC, D-Coil, Dual Lead Wires with Weatherpak with
Diode
12DR 12 VDC, D-Coil, Deuts ch
12DR/D 12 VDC, D-Coil, Deuts ch with Diode
12DR/Z 12 VDC, D-Coil, Deuts ch with Zener Diode
12DS 12 VDC, D-Coil, Dual Spade
12EG 12 VDC, E-Coil, DIN 43650
12EG/Z 12 VDC, E-Coil, DIN 43650 with Zener Diode
12EJ 12 VDC, E-Coil, AMP Jr.
12EJ/Z 12 VDC, E-Coil, AMP Jr. with Zener Diode
12EL 12 VDC, E-Coil, Dual Lead Wires, 18 inches long
12EL/36 12 VDC, E-Coil, Dual Lead Wires, 36 inches long
12EL/Z 12 VDC, E-Coil, Dual Lead Wires with Zener Diode
12ER 12 VDC, E-Coil, Deuts ch
12ER/Z 12 VDC, E-Coil, Deuts ch with Zener Diode
12EY 12 VDC, E-Coil, Metri-Pack 150
12EY/Z 12 VDC, E-Coil, Metri-Pack 150 with Zener Diode
20DG 20 VDC, D-Coil, DIN 43650
20DS 20 VDC, D-Coil, Dual Spade
20ER 20 VDC, E-Coil, Deutsch
20ER/Z 20 VDC, E-Coil, Deutsch with Zener Diode
24AG 24 VDC, D-Coil, DIN 43650
24AP 24 VDC, D-Coil, 1/2" Conduit and Dual Lead Wires
24DG 24 VDC, D-Coil, DIN 43650
24DL 24 VDC, D-Coil, Dual Lead Wires , 18 inches long
24DL/36 24 VDC, D-Coil, Dual Lead Wires, 36 inches long
24DL/W 24 VDC, D-Coil, Dual Lead Wires with Weatherpak
SF08-28
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SOLENOID CARTRIDGE VALVE POPPET, 2 PORT, NORM ALLY CLOSED
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SF08-28
24DR 24 VDC, D-Coil, Deuts ch
24DR/D 24 VDC, D-Coil, Deuts ch with Diode
24DR/Z 24 VDC, D-Coil, Deuts ch with Zener Diode
24DS 24 VDC, D-Coil, Dual Spade
24EG 24 VDC, E-Coil, DIN 43650
24EG/Z 24 VDC, E-Coil, DIN 43650 with Zener Diode
24EJ 24 VDC, E-Coil, AMP Jr.
24EL/D 24 VDC, E-Coil, Dual Lead Wires with Diode
24ER 24 VDC, E-Coil, Deutsch
24ER/Z 24 VDC, E-Coil, Deutsch with Zener Diode
24EY 24 VDC, E-Coil, Metri-Pack 150
24EY/Z 24 VDC, E-Coil, Metri-Pack 150 with Zener Diode
36DG 36 VDC, D-Coil, DIN 43650
36DS 36 VDC, D-Coil, Dual Spade
115AG 115 VAC, D-Coil, DIN 43650
115AP 115 VAC, D-Coil, 1/2" Conduit and Dual Lead Wires
230AG 230 VAC, D-Coil, DIN 43650
230AP 230 VAC, D-Coil, 1/2" Conduit and Dual Lead Wires
CODE DESCRIPTION
SF08-28
hydraforce.com
SOLENOID CARTRIDGE VALVE POPPET, 2 PORT, NORM ALLY CLOSED
hydraforce.com
24OCT2023 16:48
SF08-28
