Product Manual

PRINCE MANUFACTURING CORPORATION • P.O. BOX 7000 • NORTH SIOUX CITY, SOUTH DAKOTA 57049-7000
URL: www.princehyd.com • E-MAIL: [e-mail] • PHONE [phone] • FAX [phone]
O.E.M. CUSTOMER SERVICE: [phone] • FAX [phone] DISTRIBUTOR CUSTOMER SERVICE: PHONE [phone] • FAX [phone]
V39
VALVES
CATV 01-04-09-02
RD-5000 SERIES POWER BEYOND OPTIONS
POWER BEYOND
NOT PROVIDED
OPTION A
This option provides an outlet only
with no provision for power beyond.
This option can be used with any open
center spools where there is no need
for a power beyond port. The end outlet,
shown at right, is considered standard
but a top or bottom outlet can also be
specied.
When all the valves spools are in neutral
oil goes through the open center core
to the outlet.
This option cannot be converted in
the eld to have power beyond. It also
cannot be converted from open to
closed center.
CONVERSION PLUG
INSTALLED
OPTION B
This option is similar in function to Option
‘A’ above except the conversion plug is
installed in the power beyond location
and the end outlet is relocated. This
option should be used with the open
center spool options and allows the
valve to be converted to have power
beyond function or be converted from
open to closed center. This option is
considered the PMC Standard power
beyond option because of the exibility
it adds to the valve.
When all the valve spools are in neutral
oil goes through open center core to
return core and then to outlet.
To convert a valve in the eld to have
power beyond, remove the conversion
plug and replace it with one of the power
beyond plugs listed. To convert valve to
closed center, replace conversion plug
with closed center plug 660312005.
POWER BEYOND PLUG
INSTALLED
OPTION C 3/4 NPTF POWER
BEYOND PORT
OPTION F #12 SAE POWER
BEYOND PORT
This option provides both an outlet and a
power beyond port (also referred to as a
high pressure carry over port). This allows
another valve to be connected downstream.
When all the spools of a RD-5000 series
valve are in neutral high pressure oil can go
through the open center core and out the
power beyond port to the inlet of downstream
valve. The downstream valve only receives
oil when all spools of the rst valve are in
neutral. This option must be used with open
center spools and the outlet of valve must be
connected to tank.
If the power beyond port is not used on a
valve in an open center system the power
beyond port must be connected to tank or the
power beyond plug replaced with conversion
plug 660312003.
A valve with power beyond can be converted
to closed center by plugging the power
beyond port or installing closed center plug
660312005.
CLOSED CENTER
CONVERSION PLUG
INSTALLED
OPTION D
This option converts an otherwise open center
valve to closed center operation. The open
center core is blocked by the conversion
plug. Oil cannot pass through the valve when
the spools are in neutral. Closed center
systems are normally associated with variable
displacement pumps or any other system
where the pump ow is unloaded when system
pressure is reached.
Note: If the closed center plug is installed in
a valve that has a relief it may be necessary
to install the no relief plug or adjust the relief
pressure above the compensator setting.
Also, this closed center option does not provide
for the drain off of standby spool leakage. This
can allow a very small amount of oil to enter
the work ports when in neutral.
OPTION C Plug No. 660312004
OPTION F Plug No. 660312008
“AUTO-CYCLE” TWO SPOOL VALVE
This valve is a modied RD-5200 two spool valve that can be used to automatically cycle a hydraulic cylinder. The spools and the valve body have been modied to provide
this function. Both spools have the pressure release detent spool attachment. The valve is shown connected to a cylinder in the sketch below. The “B” port is connected
to the base of the cylinder. The “A” and “D” ports are tied together and connected to the rod end of the cylinder. The “C” port is plugged. At the beginning of the cycle the
cylinder is fully retracted. To begin the cycle both handles are pulled back. Oil is directed to the “B” port and the cylinder will extend until it reaches the end of its stroke.
At this point the pressure will build to the detent release pressure and the rst spool will center to neutral. Now the oil will go through the open center core to the second
spool and is directed out the “D” port to retract the cylinder. When the cylinder reaches the full retract position the pressure will build to the detent release pressure and
the second spool will center to neutral. This completes the cycle. To begin the next cycle both handles are again manually pulled back. Please note this valve does not
have the loadcheck feature of the standard RD5200 valve. Also the “B” port is open to tank in neutral.
RD-5000 2 SPOOL SPECIAL APPLICATION VALVE
Model Number RD523MMEE5A1A1
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
BLOCKED
RETURN
CORE
RETURN
CORE
CONVERSION
PLUG
(660312003)
POWER BEYOND
PORT (CONNECT
TO DOWNSTREAM
VALVE)
CLOSED CENTER
CONVERSION PLUG
(660312005)
CD
B A
IN
OUT
BYD
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
BLOCKED
RETURN
CORE
RETURN
CORE
CONVERSION
PLUG
(660312003)
POWER BEYOND
PORT (CONNECT
TO DOWNSTREAM
VALVE)
CLOSED CENTER
CONVERSION PLUG
(660312005)
CD
B A
IN
OUT
BYD
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
BLOCKED
RETURN
CORE
RETURN
CORE
CONVERSION
PLUG
(660312003)
POWER BEYOND
PORT (CONNECT
TO DOWNSTREAM
VALVE)
CLOSED CENTER
CONVERSION PLUG
(660312005)
CD
B A
IN
OUT
BYD
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
BLOCKED
RETURN
CORE
RETURN
CORE
CONVERSION
PLUG
(660312003)
POWER BEYOND
PORT (CONNECT
TO DOWNSTREAM
VALVE)
CLOSED CENTER
CONVERSION PLUG
(660312005)
CD
B A
IN
OUT
BYD
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
END OUTLET
(TO TANK)
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
RETURN
CORE
RETURN
CORE
OPEN
CENTER
CORE
BLOCKED
RETURN
CORE
RETURN
CORE
CONVERSION
PLUG
(660312003)
POWER BEYOND
PORT (CONNECT
TO DOWNSTREAM
VALVE)
CLOSED CENTER
CONVERSION PLUG
(660312005)
CD
B A
IN
OUT
BYD