EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-620.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Ratings and Specifications
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49° C (120° F)
Typical application pressure 350 bar (5000 psi) Port 2 to 1 and 1 to 3
@ 57 L/min (15 USgpm)
210 bar (3000 psi) Port 2 to 1 @ 114 L/min (30 USgpm)
Cartridge fatigue pressure (infinite life) 350 bar (5000 psi)
Rated flow 114 L/min (30 USgpm)
Internal leakage 1,0 L/min (0.25 USgpm)
Cavity C-12–3
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 0,4 kg (0.89 lbs)
Seal kits 02–165872 Buna–N
02–165886 Viton
®
Viton is a registered trademark of E.I. DuPont
PRV12-12 - Pressure Reducing/Relieving Valve
Spool, pilot operated
114 L/min (30 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 DataSectional View
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.
Pressure Drop Curves
210
140
6000
5000
4000
3000
2000
1000
0
0 5 10 15 20 25 30
70
280
350
415
Relieving
Reducing
100806020
40
Pressure - psi
Pressure - bar
0
Flow - L/min (21,8 cSt oil @ 49ºC)
Flow - USgpm (105 SUS oil @ 120ºF)
2
3
1
1
2
3
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-621.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
"C" Adjustm ent
76,2
(3.00)
67,3
(2.65)
3
1
2
Ø 22,17 (0.873)
Ø 23,75 (0.935)
19,1 (0.75) hex
31,7 (1.25) hex
1.063"-12 Thd.
"S" Adjustm ent
4,8 (0.18) hex
73,0
(2.88)
N om inal
"K"
Adjustm ent
PRV12-12 - Pressure Reducing/Relieving Valve
Spool, pilot operated
114 L/min (30 USgpm) • 350 bar (5000 psi)
1 Function
PRV12 - Pressure reducing/
relieving valve
2 Size
12 - 12 size
3 Seal material
Blank - Buna-N
V - Viton
®
4 Adjustment
S - Screw
C - Cap
K - Knob
5 Valve housing
material
Omit for cartridge only
S - Steel
A - Aluminum
6 Port Size
0 - Cartridge only
Code Port Size Housing Number
Aluminum Steel
Fatigue rated Fatigue rated
10T SAE 10 02–160642 02–161070
12T SAE 12 02–160646 02–169816
4G 1/2" BSPP 02–161817 02–169815
6G 3/4" BSPP 02–161816 02–169814
See section J for housing.
7 Cracking pressure
range
Note: Code based on pressure
in psi.
15 - 10-100 bar
(150-1500 psi)
30 - 17- 210 bar
(250-3000 psi)
50 - 24-350 bar
(350-5000 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.")
Model Code
PRV12 12 (V)
*
(S)
*** **
/
**
00
1 2 3 4 5 6 7 8 9
•
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)
Torque cartridge in housing
A - 81-95 Nm (60-70 ft. lbs)
S - 102-115 Nm (75-85 ft. lbs)
Installation Drawing (Steel)Cartridge Only
– – – – – –
88.9
(3.50)
2X Ø 10.3
(0.406)
88.9
(3.50)
63.50
(2.50)
9.7
(0.38)
101.6
(4.00)
2
28.7
(1.13)
25.4
(1.00)
72.9
(2.87)
25.4
(1.00)
51.6
(2.03)
1
3
