BRAND Hydraulics DS User Manual
DS DIRECTIONAL CONTROL VALVES
INSTALLATION & USER GUIDE
SPECIFICATIONS:
• Coils: - 12 VDC, 3.5 ohms, 40 watts, & 3.5 amps
- 24 VDC, 14 ohms, 40 watts, and 1.75 amps
- 120 VAC, 300 ohms, 40 watts, and 0.40 amps
• Port Sizes: - #8 SAE (3/4-16) all ports
- #10 SAE (7/8-14) all ports
- #12 SAE (1-1/16-12) all ports
- #4 SAE (7/16-20) drain port
• Weight: 10.0 lbs (4.55 kg).
• 10 Micron Filtration Recommended.
MOUNTING, & ASSEMBLY INSTRUCTIONS:
Mounting – Valve can be mounted in any orientation. Valve must be mounted on a flat surface. Special attention should
be paid to not bend or twist the casting when mounting. Doing so may cause the valve to fail.
Handle Assembly – If the enclosed lever handle is desired, the handle actuator will already be installed on the valve.
When you receive the valve, simply screw the supplied lever handle into the threaded handle actuator.
FREQUENTLY ASKED QUESTIONS:
Q: Can I paint the valve?
A: Painting valves is acceptable as long as the following precautions are taken:
1- All ports must be plugged
2- Spool must be masked or taped off completely.
Any paint on the spool will cause leakage when it chips off. Warranty is void if any valve is returned with paint on
the spool
Q: When do I need an external drain?
A: The external drain is only used on Electrically Actuated “DS” valves where operating
pressures are greater than 3600 psi (248 bar) but does not exceed 4500 psi (310 bar). The internal drain plug can be swapped
out with the external drain plug (opposite the coil) if the spool seems to “stick” at higher pressures. Note: pilot, knob, and
lever actuated valves are rated to 4500 psi (310 bar).
Q: What pilot pressure is required for the pilot operated version of the valve?
A: Valve requires 150 psi pilot pressure.
Q: When are “unused open-port” spools (types F&G) beneficial?
A: In selector spools F and G, the unused ports are open to prevent line cavitation during motor freewheel.
Q: When are closed cross-over spools used as opposed to open cross-over?
A: Closed cross-over transient position spools are recommended for switching flow between cylinders to help prevent
cylinders from shifting while in the transient position.
Q: What kits are available for this valve?
A: There is a replacement seal kit for each variation of valve (Electric = P/N#: DS-EK, Knob& Lever=P/N#: DS-K, Manual
Lever=P/N#: DS-HL, Pilot=P/N# DS-PK). There are also a number of different kits available for this valve depending on the
spool action, and handle option the valve is equipped with. Please contact factory for specific kit numbers relating to different
spool actions, and handle options.
• Flow and pressure ratings for Pilot, Lever and
Knob actuated valves
#8 SAE – 10gpm (38 lpm) & 4500 psi (310 bar)
#10 SAE –18gpm (68 lpm) & 4500 psi (310 bar)
#12 SAE –30gpm (114lpm) & 4500 psi (310 bar)
05/14
Selector
spool – used to
directional control valve
Selector
spool – used to
motors individually
Series/Parallel
spool
– used to
directional control valve
Series/Parallel spool
–
used
with one bi
-
directional pump
FLOW & PRESSURE INFORMATION:
0 8 15 23 30 38 45 53 60 68 76 83 91 98
150
120
90
Pressure vs. Flow for Electric DS
Flow (lpm)
This line represents the total
pressure drop across valve.
De-energized (Pd-Pf) + (Pb-Pc)
Energized (Pd-Pe) + (Pa-Pc)
60
Pressure (psi)
30
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Flow (gpm)
10
150
8
120
6
4
2
0
90
60
Pressure (psi)
Pressure (bar)
30
0
Pressure vs. Flow for Manual/Pilot DS
0 19 38 57 76 95 113
This line represents the total pressure
drop across valve. Total pressure
drop equals (Pd-Pf) + (Pb-Pc)
or (Pd-Pe) + (Pa-Pc)
0 5 10 15 20 25 30
COMMON DOUBLE SELECTOR APPLICATIONS:
extend and retract two
separate cylinders with one
rotate two uni-directional
rotate two bi-directional motors
in series or parallel with one
Flow (lpm)
Flow (gpm)
to rotate two bi-directional
motors in series or parallel
10
8
6
4
Pressure (bar)
2
0
05/14
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