DARV
50-350 L/min
Manifold Mounting
In-line Mounting
Sub-plate Mounting
Vickers
®
Pressure Relief Valve - Direct Acting
EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009 1
Table of Contents
General Description ......................................................................................................................................................... 2
Model Code ...................................................................................................................................................................... 3
Technical Data .................................................................................................................................................................. 4
Flow Curves ..................................................................................................................................................................... 4
Unit Dimensions .............................................................................................................................................................. 5
Dimensions for In-Line Mounting .................................................................................................................................. 6
Dimensions for Subplate Mounting .............................................................................................................................. 7
Released Part Numbers .................................................................................................................................................. 8
2 EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009
General
Description
Features:
• For manifold mounting
cartridge valve
• For In-line threaded
mounting
• For manifold mounting
• Three pressure
adjustment elements,
optional:
Wrench adjustable grub
screw with protective
cap
Rotary knob/hand lever
Lockable rotary knob
General
Eaton’s Vickers
®
DARV
pressure relief valves are
direct operated poppet
valves.
They are used to limit the
pressure in a hydraulic
system.
The valves mainly consist
of sleeve (1), spring (2),
poppet with damping
spool (3) pressure 25 to
400 bar) and adjustment
element (5). The setting
of the system pressure is
variable via the adjustment
element (5). The spring
(2) pushes the poppet (3)
onto the seat. The P line is
connected to the system
pressure. The system
pressure is applied to the
poppet area.
If the pressure in P line
exceeds the value set at
the spring (2), the pop-
pet (3) opens against the
spring (2). Now pressure
uid ows from P line into
T line. The stroke of the
poppet (3) is limited by a
pin (6).
In order to maintain good
pressure control over the
entire pressure range it is
split into seven pressure
ranges.
Hydraulics Symbol
5
5
1
1
2
6
2
3
3
T
T
P
T
P
P
T
P
4
4
Type DARV ...K... 1X/, direct acting pressure relief valve
T
P
EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009 3
Series DARV
Model Code
(F3) DARV W 6 K 10/ 25 (B)
1
Seal Options
Blank – Nitrile, for Mineral oil
Anti-wear hydraulic oil (class
L-HM)
Invert emulsion (class L-HFB)
Water glycol (class L-HFC)
F3 – Fluorocarbon seals,
for Phosphate Ester (class
L_HFD)
2
Direct acting relief valve
3
Adjustment
W - Wrench and cover
H - Knob
K - Lockable Knob (Size 6, 8
and 10 only)
4
Size
6 - size 6
8 - size 8
10 - size 10
15 - size 15
20 - size 20
25 - size 25
30 - size 30
5
Mounting Style
K – Cartridge valve
(6,10,20,30 only)
G – In-Line mounting (all
sizes)
P – Subplate mounting
(6,10,20,30 only)
6
Design Number
10
8
Pressure Range
25 – 25 bar
50 – 50 bar
100 – 100 bar
200 – 200 bar
315 – 315 bar
400 – 400 bar (size 6 to 20
only)
9
Thread type of In-Line
mounted valve (G option)
B – BSP thread
F – Metric thread
1 2 3 4 5 6
7
8
4 EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009
Technical Data
HYDRAULIC TECHNICAL DATA
Max. Operating Pressure (Bar)
Max. Flow Rating (L/min)
Fluid temperature range (
O
C) -30 to + 80 (with Nitrile seals)
Fluid Viscosity range (mm
2
/s) 10 to 800
Fluid Cleanliness Level ISO 19/17/14
Flow Curves
(measured at v = 41mm
2
/s
and t = 50
O
C)
-20 to + 80 (with Fluorocarbon seals)
Size 6 8, 10 15, 20 25, 30
Port P 400 400 400 315
Port T 315 315 315 315
Size 6 8, 10 15, 20 25, 30
(L/min) 50 120 250 350
Flow Q
p
(L/min)
Size 8 and 10
Operating Pressure (bar)
0 20 40 60 80 100 120
600
500
400
300
200
100
50
Minimal Control Pressure
Flow Q
p
(L/min)
Size 6
Minimal Control Pressure
Operating Pressure (bar)
0 10 20 30 40 50 60
400
300
200
100
50
Flow Q
p
(L/min)
Size 15 and 20
Operating Pressure (bar)
0 100 200 250
400
300
200
100
50
Minimal Control Pressure
EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009 5
1. Wrench adjustable grub screw and
protective cap, “W” option
2. Rotary knob (up to size 20) and hand
wheel (size 30), “H” option
3. Lockable rotary knob up to size10 (sizes
20 to 100 bar), “K” option
4. Locknut
5. Protective cap
6. Pressure rating (stamped on)
7. Reference mark (Position may be set by
moving it axially to engage with the AF30
Hex)
8. P port position optional about
circumference or end
9. T port position optional about
circumference
DARV Series
Dimensions mm
For Manifold Mounting
“K” Style Mounting
Ø2.5
ØD1
Ø60
AF19 AF30 AF
AF19 AF30
AF30 AF
AF
AF6
L1
L2
11
L3
5
4
4
11
11
L230
9 87 65
3
7
2
6
1
ØD4
ØD3
ØD2
a
45
o
ØD5
ØD7
L4
L5
L6
L7
L8
L9
L10
0.5 X 45
O
ØD6
8
9
A
0,05
A
A
0,02
0,1
A
0,008 / Pt 20
Rz 16
0,008 / Pt 20
Size L4 L5 L6 L7 L8 L9 L10 AF Weight (kg)
6 15 19 30 35 45 56.50 65 32 approx. 0.4
10
18 23 35 41 52 67.50 80 36 approx. 0.5
20 21 27 45 54 70 91.50 110 46 approx. 1.0
30 23 29 45 60 84 113.50 140 60 approx. 2.2
Size ØD1 ØD2 ØD3 ØD4 ØD5 ØD6 ØD7 a L1 L2 L3
6 34 M28 x 1.5 25
H9
6 15.00 24.90 6 15
o
72 83 64.50
10 38 M35 x 1.5 32
H9
10 18.50 31.90 10 15
o
68 79 79.00
20 48 M45 x 1.5 40
H9
20 24.00 39.90 20 20
o
65 77 106.00
30 63 M60 x 2.0 55
H9
30 38.75 54.90 30 20
o
83 - - 131.00
+0.152
-0.200
+0.162
-0.200
+0.162
-0.200
+0.174
-0.200
up to 200 bar up to 400 bar
50 (37) 80 (59)
100 (74) 150 (111)
150 (111) 300 (221)
350 (258) 500 (370)
Tightening torques value in Nm(ft - lb)
6 EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009
D4, Depth T1
2
3
P
P
(P)
(P)
T
T
1
D1 D2
D3
L5 L6
L7
L8
L3 L4
B1
B2
H1
H2
B2
B1
4
DARV Series
Dimensions mm
For In-Line Mounting
“G” Style Mounting
Size ØD3 D4 B1 B2 H1 H2 L3 L4 L5 L6 L7 L8 T1 Weight (kg)
6 6.60 M6 45 60 25 40 80 4.00 15 55 40 20 10 approx. 1.5
(8)10 9.00 M8 60 80 40 60 100 4.00 20 70 49 21 20 approx. 3.7
(15)20 9.00 M8 70 100 50 70 135 5.50 20 100 65 34 20 approx. 6.4
(25)30 11.00 M10 100 130 60 90 180 5.50 25 130 85 35 25 approx. 13.9
Size ØD1 D2 (Metric) D2 (BSP)
6 25 M14 x 1.5 G 1/4”
(8)10 (28)34 (M18 x 1.5) M22 x 1.5 (G 3/8”) G 1/2”
(15)20 (42)47 (M27 x 2) M33 x 2 (G 3/4”) G 1”
(25)30 (56)61 (M42 x 2) M48 x 2 (G 1-1/4”) G 1-1/2”
1 Adjustment for pressure setting
2 Optional P port position
3 Nameplate
4 Valve mounting holes
EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009 7
DARV Series
Dimensions mm
For Subplate Mounting
P Style Mounting
1
B1
H2
ØD3
2
3
4
P
(P)
(P)
T
PT
L3
L5 L6
L9
L10
L4
B1
B2
Mounting
Size L9 L10 Bolt Torque
6 20 40 M6x 50 14 Nm
10 21 45 M8x 70 34 Nm
20 34 65 M8x90 34 Nm
30 35 85 M10x 110 68 Nm
1 Adjustment screw for pressure setting and
protective cap internal hexagon (up to size 20)
external hexagon (sizes 25,30)
2 Optional port P (e.g. for presuure gauage)
3 Name plate
4 Valve mounting holes
Mounting bolt must be to SAE grade 8, DIN 912-10.9
or ISO 898 class 12.9
Other dimensions, see “In-Line” mounting type.
8 EATON Vickers Pressure Relief Valve-Direct Operated V-VLRE-MC003-E May 2009
Released
Part Numbers
Assembly Number Model Code
DARV-W-6-G-10/200B 02-413460
DARV-W-6-K-10/100 02-413461
DARV-W-6-K-10/200 02-413462
DARV-W-6-K-10/315 02-413463
DARV-W-6-K-10/400 02-413464
DARV-W-6-P-10/10 02-413465
DARV-W-6-P-10/200 02-413466
DARV-W-6-P-10/315 02-413467
F3-DARV-W-6-P-10/315 02-413468
DARV-W-10-G-10/100B 02-413469
F3-DARV-W-10-G-10/100B 02-413470
DARV-W-10-G-10/200B 02-413471
DARV-W-10-G-10/315B 02-413472
DARV-W-10-K-10/100 02-413473
DARV-W-10-K-10/200 02-413474
DARV-W-10-K-10/315 02-413475
DARV-W-10-K-10/400 02-413476
DARV-W-10-P-10/200 02-413477
F3-DARV-W-10-P-10/200 02-413488
DARV-W-10-P-10/315 02-413479
DARV-W-20-G-10/200B 02-413512
DARV-W-20-G-10/315B 02-413513
DARV-W-20-K-10/100 02-413514
DARV-W-20-K-10/200 02-413515
DARV-W-20-K-10/315 02-413516
DARV-W-20-K-10/400 02-413517
DARV-W-20-P-10/100 02-413518
DARV-W-20-P-10/200 02-413519
F3-DARV-W-20-P-10/200 02-413520
DARV-W-20-P-10/315 02-413521
F3-DARV-W-20-P-10/315 02-413522
DARV-W-20-P-10/400 02-413523
DARV-W-25-G-10/100B 02-413524
DARV-W-25-G-10/200B 02-413525
DARV-W-25-G-10/315B 02-413526
DARV-W-30-G-10/200B 02-413527
DARV-W-30-K-10/200 02-413528
DARV-W-30-K-10/315 02-413529
DARV-W-30-P-10/200 02-413530
F3-DARV-W-30-P-10/200 02-413531
DARV-W-30-P-10/315 02-413532
* Bold items are preferred products
Eaton
Hydraulics Group USA
14615 Lone Oak Road
Eden Prairie, MN 55344
USA
Tel: 952-937-9800
Fax: 952-294-7722
www.eaton.com/hydraulics
Eaton
Hydraulics Group Europe
Route de la Longeraie 7
1110 Morges
Switzerland
Tel: +41 (0) 21 811 4600
Fax: +41 (0) 21 811 4601
Eaton
Hydraulic Group Asia Pacific
11th Floor Hong Kong New World Tower
300 Huaihai Zhong Road
Shanghai 200021
China
Tel: 86-21-6387-9988
Fax: 86-21-6335-3912
© 2009 Eaton Corporation
All Rights Reserved
Printed in USA
Document No. V-VLRE-MC003-E
May 2009