200-P-991214-EN-14/03.2016
UP100
99/156
7.2 Pressure relief valves
7.2.1 Pressure relief valve: **VM01C
Direct acting
Balanced piston
Adjustable setting
Four setting ranges
Max. pressure. 350 bar ***..........................
Max flow rate 60 l/min...............................
Temperature range -20/+100 _C.....................
Weight 0.155 Kg....................................
T
P
The valve can be sealed against tampering
Option: plastic tamper proof
cap code 200678400561
M20X1.5
44
83
92
Ø25.8
10
(**)
-0
13
10
+5
Nm
-0
24
65
+5
Nm
4
P
T
(**)WASHER
P
T
3.62"
3.27"
1.73"
.39"
(**) Assembly instruction:
Check the correct position of the front
copper washer and tighten with a tor
que wrench at the indicated value
1.02" DIA
20
44
1.73"
.79"
Pressure viscosity characteristic 46 cSt at 40°C
280
605040302010
0
260
240
220
200
180
160
140
120
100
80
60
40
20
bar
l/min
300
320
221-350
221-350
150-250
96-220
96-220
30-95
70
5-30 (*)
(*) see performances trace/minimum pressure setting (- - - -)
The purpose of a relief valve is to keep the maximum
system pressure at a safe level. When the hydraulic power
unit is supplied with pressure relief valves, the correct cali
bration is provided by Bucher Hydraulics S.p.A. and there
are no reasons to change this value.
When ordering, state in full the sheath part number, and, if
the valve is to be supplied with sheath already fitted, the re
lief pressure setting required.
*** Maximum admitted pressure value: 230 bar when used
into the diecast alluminium alloy body
Pressure setting
For present values other than those indicated, replace the
first two digits of the designation with the setting required.
For example, required setting 120 bar: designation type 12
VM01C. Always check that the required value falls within
the standard ranges of adjustment.
Performances
Max. flow 60 l/min.
Pressure setting flow 5 l/min
Max internal leakage
200 cm/min at 80% of
nominal pressure setting
Oil viscosity 12 to 400 cSt
Oil temperature -20 to 100 °C
Recomanded filtration 21/19/16 (10 NAS 1638)
Marking info: Printed code and date
Spring Spring code Setting range Standard setting Q max (l/min) Type Code
00 - Plugged Without valve - 00VC00 200978400140
02 200662403160 5 - 30 bar 20 bar 30 (*) 02VM01C 200787403600
05 200662403080 30 - 95 bar 50 bar 60 05VM01C 200787403480
12 200662403050 96 - 220 bar 120 bar 60 12VM01C 200787403420
15 200662403070 150 - 250 bar 150 bar 60 15VM01C 200787403470
23 200662403060 221 - 350 bar 230 bar 60 23VM01C 200787403430
