56
PRESSURE
RETURN
MOTORIZED HYDRAULIC
FLOW CONTROL VALVE
PUMP
STRAINER
SHUT-OFF VALVE
SHUT-OFF VALVES
FLANGED
FLOWMETER
AGITATION
VALVE
PRESSURE
RETURN
MOTORIZED
HYDRAULIC
FLOW CONTROL
VALVE
PUMP
NOZZLE MONITORS
FLOWMETER
AGITATION
STRAINER
SHUT-OFF VALVE
Appendix I - Motorized Hydraulic Flow Control Valve
How do I select the correct control valve?
To select the valve best suited for your application, you
need to know the maximum hydraulic oil flow rate; the
following information may be helpful:
1. Hydraulic Motor Displacement
Determine the motor displacement required for your
application. Motor displacement is the amount of oil
moved per revolution of the motor (typically rated in
cubic inches). This specification will be determined
by the torque and rpm requirements of the delivery
system. Your motor supplier will be the best resource
for matching a suitable motor with your application
needs. (If the motor rating is given in cubic centimeters
simply multiply cubic centimeters by .061 to convert it
to cubic inches.)
2. Maximum Hydraulic Oil Flow
Calculate the maximum oil requirements for your
application. Simply multiply the maximum motor
rpm by the motor displacement. For example,
the maximum oil flow for a 300 rpm motor with a
displacement of 4.8 is 1440 (300 x 4.8 = 1440).
3. Maximum Gallons per Minute of Oil Flow
Calculate the maximum gallons per minute (GPM)
of oil flow required for your application. There are
231 cubic inches of hydraulic oil per gallon so simply
divide the maximum oil flow by 231 and multiply by
.8 (control valve rating factor). For this example, the
maximum GPM of oil flow is 4.99 (1440 ÷ 231 x .8 =
4.99). The control valve best suited for this example is
the 5 GPM valve (rated just higher than maximum GPM
requirement of 4.99).
Bigger isn’t always better. Selecting the 10 GPM valve
(or larger) would result in roughly half of the control
range of the valve being unused. For optimum system
performance, select the control valve with the rating
closest to the maximum GPM requirements of your
application. Continue reading for valve options and
specifications.
Specifications
DESCRIPTION
The Motorized Hydraulic Flow Control Valve is a two
wire polarity reversing valve. Change polarity to open
or close the valve, cut 12VDC power to hold valve at
desired setting. All that is required for basic control is
a double-pole double-throw switch. It also works great
with Micro-Trak’s full line of automatic rate controllers.
PUMP COMPATIBILITY
• Open (Recommended)
• Closed
• Load Sense
OPERATING PRESSURE
• 3000 PSI Maximum
FLOW RANGES PORT SIZES
• Part # 13859 0-5 GPM #8
• Part # 14885 0-10 GPM #8
• Part # 13857 0-15 GPM #8
• Part # 13860 0-20 GPM #8
• Part # 13858 0-35 GPM SAE #12
OPERATING SPEED (Fully closed to fully open @ 12V DC)
• 3.5 sec.
AVAILABLE OPTIONS
• Bypass Dump Valve
• Adjustable Pressure Relief
Typical Applications
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