DENISON HYDRAULICS
Unloading Valves
Series R4U
Publ. S3-ML 2500-B, replaces S3-ML 2500-A
R4U03
2
SERVICE INFORMATION
1) Mounted dependent on function.
Je nach Funktion montiert.
Monté suivant la fonction.
Montaggio conforme alla funzione.
Se monta dependiendo de la función.
R4U06
3
SERVICE INFORMATION
1) Mounted dependent on function.
Je nach Funktion montiert.
Monté suivant la fonction.
Montaggio conforme alla funzione.
Se monta dependiendo de la función.
R4U10
4
SERVICE INFORMATION
1) Mounted dependent on function.
Je nach Funktion montiert.
Monté suivant la fonction.
Montaggio conforme alla funzione.
Se monta dependiendo de la función.
SERVICE INFORMATION
5
SERVICE INFORMATION
6
SERVICE INFORMATION
7
MODEL CODE
omit
for version
without
VV01
Model Number: R4U .. – . . . – . . – .. – ... – A 1 –
1 2 3 4 5 6 7 8 9 10 11 12
1 Series
R4U = Unloading Valve
2 Size
03 = 3⁄8HH
06 = 3⁄4HH, 1HH
10 = 11⁄4HH
3 Max. Pressure
0 = for cartridges only
5 = for body valves only k 350 bar
4 Body Mounting
Cartridge with pilot valve:
0 = without Y1 port
G = Y1 port = G 1⁄4HH
E = Y1 port = SAE-4 (7⁄16HH–20 UNF)
Subplate mounting:
3 = without Y1 port
9 = Y1 port = G 1⁄4HH
7 = Y1 port = SAE-4 (7⁄16HH–20 UNF)
Threaded body:
k
6 = R4U03 = G 1⁄2HH T-body
= R4U06 = G 1HH T-body
X, Y1 ports 1) = G 1⁄4HH
D = R4U06 = G 3⁄4HH L-body
1
= R4U10 = G 1 ⁄4HH L-body
k
4 = R4U03 = SAE– 8 T-body
= R4U06 = SAE–16 T-body
X, Y1 ports 1) = SAE-4
B = R4U06 = SAE–12 L-body
(7⁄16HH–20 UNF)
= R4U10 = SAE–20 L-body
1) Port Y1 is only available at Drain line (code 2) external
from the pilot head
5 Pressure Setting Range
1 = 7...105 bar (pressure differential nominal 28 %)
3 = 7...210 bar (pressure differential nominal 28 %)
5 = 7...350 bar (pressure differential nominal 15 %)
6 Type of Control
1 = Hand knob 32 mm dia.
2 = Hand knob 50 mm dia. (not for version with vent valve VV01)
3 = Acorn nut with lead seal
4 = Adjusting device with key lock, key order no. 700–70619-8
7 Drain Line (Ports Y, Y1)
0 = internal
1 = external from the subplate/manifold (Y)
2 = external from the pilot head (Y1); (not for Body mounting codes 0 or 3)
8 3-Way Vent Valve VV01
09 = with manual override Solenoid de-energized: open to tank
10 = without manual override k Solenoid energized: vent line blocked
11 = with manual override Solenoid de-energized: vent line blocked
12 = without manual override k Solenoid energized: open to tank
9 Solenoid Voltage and Current
W01 = 115 V / 60 Hz
W02 = 230 V / 60 Hz
W06 = 115 V / 50 Hz
W07 = 230 V / 50 Hz
k
AC
G0R = 12 V
G0Q = 24 V
G0H = 48 V k DC
0 Design Letter
1 Seal Class
1 = NBR-seals (Standard)
4 = EPDM-seals
5 = FPM-seals (Viton`)
2 Modifications
