Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.1
HYDRANOR
DIRECT ACTING PRESSURE REDUCING VALVES 3RV(B)
GENERAL DESCRIPTION
Figure 1 3RV General Arrangement
The Direct Acting Pressure Reducing 3RV(B) are seawater resistant valves for reducing of the
pressure in hydraulic systems. The valves have the following characteristics:
Delivered with threaded connections, or for gasket mounting to a sub plate or valve
unit.
Two adjustable pressure ranges are available.
Delivered with flow capacity up to 300 l/min.
The valves can be delivered with flange for panel mounting.
For more details about types and options, please refer to section ’Modular Code’.
Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.2
HYDRANOR
MODULAR CODE
Options
Remarks
Design Code
Fill in
Mounting
3RV
Threads
SUB Plate
B
Reduced Pressure ranges
5– 175 bar
3
50 – 350 bar
4
Size
10 mm
35 l/min
2
15 mm
75 l/min
3
20 mm
125 l/min
4
30 mm
300 l/min
6
Adjustment
Knob
R
Alternative Mounting
Panel mounted
P
Drain
External drain connection
L
L
In example a 3RV valve with sub plate, 0-175 bar, 300 l/min flow and knob will have
modular code: 3RVB36RL
3RVB**L
Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.3
HYDRANOR
DIMENSIONS
T
L
P
M
Figure 2 3RV Dimensions
Size [mm]
A
B
C
F
H
L1
L2
P1
P2
Q
10
70.5
24
179
62.5
60
12
39.5
42
48
52
15
87.5
24
219
82.5
80
13
48.5
55
57.5
70
20
87.5
24
219
82.5
80
13
48.5
55
57.5
70
30
128
24
259
112.5
110
21
76
65
87
95
Q1
S
S1
T1
T2
R
Z
U
V
X
10
17.5
8
55.5
42
25
½”
9
5.5
12
14
15
23.5
10
68.5
55
30.5
¾”
11
10
14
17
20
23.5
10
68.5
55
30.5
1”
11
10
14
17
30
26
15
106
65
43
1 ½”
17
16
14
25
Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.4
HYDRANOR
M
P
T
L
Figure 3 3RVB Dimensions
Size
[mm]
A
B
C
H
L1
L2
P1
P2
Q
Q1
Q2
S
S1
S2
T1
T2
Z
10
70.5
24
179
60
33
61
18
48
8
-
55.5
52
17.5
-
42
25
9
20
87.5
24
219
80
43
76
25
57.5
10
15.5
68.5
70
23.5
72.5
55
30.5
9
30
128
24
259
110
58
115
33
87
15
16
106
95
26
112
77
43
11
Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.5
HYDRANOR
TECHNICAL DATA
Description
Symbol
Data
Max. operating pressure in port P
P
max
350 bar
Max. pressure in port T (See note)
T
max
10 bar
Max. pressure in port L (See note )
L
max
10 bar
Test Pressure
P
420 bar
Hydraulic fluid
Mineral oils for hydraulic system
Viscosity range:
v
10 to 350 mm
2
/s (cST)
Viscosity index:
VI
120
Filtration, recommended filter with 20 100
Class 9 according to NAS 1638,
18/15 according to ISO 4406
Fluid temperature range:
T
-20 C to + 70 C
Ambient temperature range
T
-20 C to + 50 C
Standard Body Material
EN-GJS-400-15 (GGG 40)
Standard O-rings
Nitrile shore 70
Note: Pressure at connection T is direct additive to valve setting.
When pressure on tank connection T exceeds 10 bar, drain connection L must be used.
Flow and Weights:
Size
Nominal Flow
Weight
10 mm
35 l/min
2.5 kg
15 mm
75 l/min
5.4 kg
20 mm
125 l/min
5.4 kg
30 mm
300 l/min
11.4 kg
Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.6
HYDRANOR
Interfaces:
Size
Description
Data
3RV:
Threaded Connections
Screws
Tightening
Torque [Nm]
10 mm
½” BSPP
2 off M 8 – DIN931
19.6
15 mm
¾” BSPP
2 off M 10 – DIN931
34.4
20 mm
1” BSPP
2 off M 10 – DIN931
34.4
30 mm
1 ½” BSPP
2 off M 16 – DIN931
78.5
3RVB:
Screws
Tightening
Torque [Nm]
10 mm
4 off M 8 x 70 – DIN 931
19.6
15 mm
4 off M 8 x 90 – DIN 931
19.6
20 mm
4 off M 8 x 90 – DIN 931
19.6
30 mm
4 off M 16 x 130 – DIN 931
58.8
O-rings
Size [mm]
10 mm
2 off
1 off
11.91 x 2.62
9.92 x 2.62
15 mm
2 off
1 off
22,20 x 3.0
9.92 x 2.62
20 mm
2 off
1 off
22,20 x 3.0
9.92 x 2.62
30 mm
2 off
1 off
31.34 x 3.53
9.92 x 2.62
Pressure Reducing Valve 3RV(B)
Rev.2/1001 3.2.7
HYDRANOR
INSTALLATION
The Direct Acting Pressure Reducing Valves 3RV are installed to the pipeline with threaded
connections and mounted to a bracket or similar with 2 off screws. The 3RVB valves are
installed with 4 off screws to a SUB plate or valve unit. Please refer to section ‘Interfaces’ for
details about connections and screws.
OPERATION
Pressure adjustment
Install a pressure gauge to connection M on the valve, and turn the hexagon screw or hand
wheel until requested pressure is achieved. A cap nut protect the hexagon screw/spindle.
Clockwise rotation increase pressure.
Counter clockwise rotation decrease pressure setting.
MAINTENANCE
Check the valve for proper function. Visually check the valve and if required, paint unpainted
(damaged) areas.
STORAGE
If storage longer than 6 months is expected, the valve must be kept in a dry room, free from
dust and protected against sudden large temperature variations. For storage longer than 12
months, the valve must be filled with inhibition oil. Before use check all visible seals and
flush with clean oil.
MARKING
Inlets and outlets are marked, refer to figure in section ‘General Description’.