FLUID POWER SYMBOL
TUCSON
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
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Umbergaon, Gujarat
C1B 246/5, G.I.D.C. Indl. Estate
tucson@vsnl.com
3D ISOMETRIC VIEW
DIRECT ACTING RELIEF VALVEC175
Specifications
Figures based on: Oil Temp = 40°C Viscosity = 40 cSt
Rated Flow 17 lpm
Max Pressure 210 bar
Cartridge Material
Working parts : Hardened, ground steel
External surfaces : Zinc plated
Weight (Cartridge only)
C175: 1.500 kg
Manifold Material SG Iron (upto 350 bar)
Torque into Cavity 45 Nm
Mounting Line
Filtration Level BS5540/4 Class 18/13 (25µ nominal)
Operating Temp -20°C to +70°C (Standard Seals)
Leakage Less than 0.3 millilitres/min (5 dpm)
Viscosity Range 5 to 500 cSt
17 A/F
1-125.A
P
T
P
T
P
T
Application
Pressure Relief valves are used to limit
the pressure in the system as set on
the valve. Direct Relief Valves are
applicable in systems where quick
pressure release is of prime concern
for safety. This is an economical
solution for systems having small
flows. The valve is a zero leak valve
due to the metal sealing of the poppet
on the seat. The C175 can also be used
for pilot systems.
Operation
As with all direct acting pressure relief
valves, when the pressure at the inlet (P)
exceeds the spring force set by the
adjuster, the poppet moves back,
opening the inlet (1) to outlet (T). This
relieves the pressure to tank. The
dampening buffer on the nose of the
valve dampens the vibrations caused
by pressure variations on the valve.
This gives it a s
mooth opening and
closing characteristic with minimum
chatter.
Features
Matched ground and hardened working
parts give a long and trouble-
free life.
Consistent stable operation providing
low pressure over ride even with
increasing flows.
Cartridge type
c
onstruction gives maximum flexibility
in mounting.
60,4 MAX.117,5
PRESSURE CHARACTERISTICS
TO ORDER
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T
UCSON
H
YDROCONTROLS
www.tucsonhydrocontrols.com
tucson@vsnl.com
Umbergaon, Gujarat
C1B 246/5, G.I.D.C. Indl. Estate
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1-125.B
BASIC CODE
ADJUSTMENT
P: CAP
K: KNOB
PORT SIZE
2W: 1/4 BSP PORTS
3W: 3/8 BSP PORTS
OMIT FOR CARTRIDGE
PRESSURE RANGE
07: 5 to 70 bar
14: 35 to 140 bar
21: 100 to 210 bar
C175 K 2W 21
BASIC CODE: C175 K
1/4" or 3/8" BSP PORTS
COMPLETE VALVE
Pressure (bar)
Flow (lpm)
0
0 3 6 9 12 15 18 21 24 27
40
80
120
160
200
240
280
320
360
400
30 33 36
O 73,2
O 57,2
12,7
15,5
60,4117,5
77,8
HANDWHEEL
FOR PRESSURE
ADJUSTMENT
LOCKNUT
BOLT HOLE O 7 - 4 PLACES
C'BORE O 11 - 7 DEEP
1
