EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-610.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
PRV12-10 - Pressure Reduced/Relieving Valve
Spool, pilot operated
45 L/min (12 USgpm) • 350 bar (5000 psi)
Operation
This valve is normally open
allowing inlet oil to pass to the
regulated line until the outlet
(regulated) pressure exceeds
the setting of the pilot section.
When this setting is achieved
a pilot flow occurs, causing a
pressure imbalance across the
main spool, which then moves
throttling the inlet flow
and preventing any further
pressure rise in the regulated
line. If any external force
causes the regulated pressure
to rise more than 5-10% above
the setting, the main spool
moves back further, opening
the regulated port to the tank
line, thus working as a relief
valve.
Features
Cartridge construction with
hardened, ground and honed
working parts giving smooth,
stable operation over all
pressure ranges.
Performance Data
Sectional View
Ratings and Specifications
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49° C (120° F)
Typical application pressure (all ports) 350 bar (5000 psi)
Cartridge fatigue pressure (infinite life) 350 bar (5000 psi)
Rated flow 45 L/min (12 USgpm)
Cracking pressure 15 – 8,5–100 bar (125–1500 psi)
30 – 17,0–210 bar (250–3000 psi)
50 – 38– 350 bar (550–5000 psi)
Cavity C-10-3
Standard housing materials Aluminum or steel
Temperature range -40° to 120°C (-40° to 248°F)
Fluids All general purpose hydraulic fluids such as:
MIL–H–5606, SAE 10, SAE 20, etc.
Filtration Cleanliness Code 18/16/13
Weight cartridge only 0,24 kg (0.54 lbs)
Seal kits 565804 Buna–N
889599 Viton
®
Viton is a registered trademark of E.I. DuPont
Reduced Pressure
Characteristics
Cartridge only
(max. setting)
Description
This is a pilot operated
screw in cartridge pressure
reducing / relieving valve. The
valve maintains a constant
outlet pressure in hydraulic
sub-systems regardless of
fluctuations in the primary
system. In addition to this it
will act as a relief valve if the
pressure in the sub-system
rises higher than the setting of
the valve directing excess fluid
to tank.
A - 50 spring
B - 33 spring
C - 15 spring
Regulated Pressure - psi
Flow - L/min (21,8 cSt oil @ 49°C)
Flow - USgpm (105 SUS oil @ 120°F)
12 10 8 6 42 0 2 64 8 10 12
0
Port 1 to 3 Port 2 to 1
A
B
C
Regulated Pressure - bar
40 30 20 10 10 20 30 40
5000 350
4000 280
3000 210
2000 140
1000 70
2
3
1
2
1
3
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-611.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
PRV12-10 - Pressure Reduced/Relieving Valve
Spool, pilot operated
45 L/min (12 USgpm) • 350 bar (5000 psi)
Model Code
PRV12 10 (V)
*
(S)
**
**
/
**
00
1 2 3 4 5 6 7 8 9
1 Function
PRV122 Size
103 Seal material
BlankV4 AdjustmentC F
I K S
5 Valve Housing
Material
BlankS
6 Port Size
0 - Cartridge only
Code Port Size Housing Number
Aluminum Aluminum Steel
Light duty Fatigue rated Fatigue rated
3B 3/8" BSPP 02–173358 – –
2G 1/4" BSPP – 876705 02–175127
3G 3/8" BSPP – 876714 02–175128
6H SAE 6 – 876704 –
8H SAE 8 – 876711 –
6T SAE 6 566162 – 02–175124
8T SAE 8 – – 02–175125
See section J for housing.
7 Cracking Pressure
Range
Note: Code based on pressure
in psi.
15 - 8,5-100 bar
(125-1500 psi)
30 - 17,0-210 bar
(250-3000 psi)
50 - 38-350 bar
(550-5000 psi)
8 Factory Set
Reduced Pressure
Within ranges in
7
Blank - Normal factory
setting at approximate
mid-range. User requested
settings in 3,45 bar (50 psi)
steps, Coded as in the
following examples:
10 - 70 bar (1000 psi)
10.5 - 72,4 bar (1050 psi)
9 Special Features
00 - None
(Only required if valve has special
features, omitted if "00.")
2
52,3
(2.06)
Ø 15,82 (0.623)
Ø 17,42 (0.686)
46,0
(1.81)
1
3
"I" Adjustm ent
"F" Adjustm ent
"S" Adjustm ent
80,0
(3.13)
25,4
(1.00)
hex
"C" Adjustm ent
19,1 (0.75) hex
"K" Adjustm en
t
Ø 38,1 (1.50)
•
WARNING
Aluminum housings
can be used for
pressures up to 210 bar (3000
psi). Steel housings must be
used for operating pressures
above 210 bar (3000 psi).
Dimensions
mm (inch)
Installation Drawing (Steel)Cartridge Only
– – – – –
Torque cartridge in housing
A - 47-54 Nm (35-40 ft. lbs)
S - 68-75 Nm (50-55 ft. lbs)
–
76.2
(3.00)
63.5
(2.50)
57.02
(2.245)
2X Ø7.14
(0.28)
9.7
(0.38)
76.2
(3.00)
1
3
2
22.4
(0.88)
19.1
(0.75)
35.1
(1.38)
22.4
(0.88)
83.8
(3.30)
