ENGINEERING
Ref. No. P03600
PILOT OPERATED PRESSURE
RELIEF CUM UNLOADING VALVES
PPRU
P03600
1
Section
Description
Two stage poppet type Relief cum unloading valve.
Additional solenoid unloading facility as an optional
feature.
Three standard sizes - 10, 20, & 30.
Polyhydron Pvt. Ltd.
78-80, Machhe Industrial Estate,
Machhe, Belgaum - 590 014. INDIA.
Hydraulic Symbol
X A B
Release 02/2009
Phone : +91-(0)831-2411001
Fax : +91-(0)831-2411002
E-mail : polyhydron@gmail.com
Website : www.polyhydron.com
P
P
P
Y - External Drain
P - Unloading pressure
X - External pilot
A
P
Y
A
B
X
A
P T
B
Internal Drain
P - Unloading pressure
X - External pilot
A
A
B
X
T
B
P
A
P
B
P
Y
X
P
A
T
B
B
X
TP
A
B
Internal Drain
P - Unloading pressure
Internal pilot
B
A
A
P
A
T
B
B
T
B
P
A
Internal pilot
Y-External Drain
P - Unloading pressure
P
A B
A
P
B
T
P
A B
T
A
P
B
Y Y
PPRU Normally
Description
Open
Close
ENGINEERING
Ref. No. P03600
PILOT OPERATED PRESSURE
RELIEF CUM UNLOADING VALVES
PPRU
P03600
2
W2
W1
H5
L22 Nos.
L1
ØD2 hole, thru
G1/4
H4
H2
H3
H1
A
ØD1
L3
G
X
B
an optional feature)
knob available as
(Optional feature)
pilot drain G1/4.
Port for external
L4
L5
Y
(Provision)
Solenoid Valve
(4 A/F) screw (Hand
Pressure adjusting
W2
X
P
W3
H6
Port for
External Pressure
Unloading.
Size Mass Kg. G H1 H2 H3 H4 H5 H6 L1 L2 L3 L4 L5 W1 W2 W3 ØD1 ØD2
20 4.8 G1 138 27 10 57 100 50 85 45 62 14 35.5 66 33 12 44 9
30 9.5 G1 1/2 175 42 13 80 138 80 100 54 72 18 41.5 86 43 14 60 11
Threaded Type
Unit Dimensions
Dimensions in mm.
Subplate Type
L2
L3
L4
W1
W2
L1
H2
H1
H3
Soleniod valve
(Provision)
Size 10 20 30
Mass
Kg.
4.8 6.7 12
H1 125 126 145
H2 95 75 75
H3 13 12 14
L1 84 100 128
L2 31 28.9 31.8
L3 -- -- 42.1
L4 42.9 60.3 84.1
W1 88 100 120
W2 66.7 79.4 96.8
ENGINEERING
Ref. No. P03600
PILOT OPERATED PRESSURE
RELIEF CUM UNLOADING VALVES
PPRU
P03600
3
Subplate ( Not in supply )
L2
L3
ØD1
Ø6
Panel cutout
X
B
R
P
L18
0
L8
L10
B6
B7
L9
A
P
0
L8
B4
B5
B3
B2
L17
0
H2
H1
Ø22
G1/4
1
13
max
Ø17.5
Ø11
0.8
0
A
B11
R
Y
1
B8
B9
B10
L19
L16
L15
L6
L7
15 deep
M10X1.5
Ø7.5, 8 deep
L12
L11
X
B
B1
Y
L1
L5
L14
L13
T1
ØD3
ØD2
1
Size Model No.
Mass
kg
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 ØD1 ØD2 ØD3
10
1SU06G02
2.4 86 9.6 11 7.9 33.3 58.7 66.7 -33.3 -7.9 33.3 58.7 13
G1/4 22
1SU06G03 G3/8 25
1SU06G04 G1/2 30
20
1SU08G06
5.2 112 16.3 14 6.4 39.7 73 79.4 3 3 39.7 75 22
G3/4 36
1SU08G08 G1 44
30
1SU09G10
8.5 140 21.6 15 4 48.4 92.9 96.8 1.6 1.6 48.4 98.5 31
G1¼ 54
1SU09G12 G1½ 60
Size Model No. H1 H2 L1 L2 L3 -- L5 L6 L7 L8 L9 L10 L11 L12 L13
10
1SU06G02
15 29 42.9 35.7 31.8 -- -- 21.4 21.4 7.1 45.9 10 121 141 851SU06G03
1SU06G04
20
1SU08G06
25 45 60.5 49.2 44.5 -- -- 39.7 20.8 11.1 22 16 104 136 77
1SU08G08
30
1SU09G10
35 47 84.1 67.5 62.7 -- 42.1 59.6 24.6 16.7 33 10 150 170 111
1SU09G12
Size Model No. L14 L15 L16 L17 L18 L19 R T1 Valve fixing screws Tightening torque
10
1SU06G02
11 67.3 67.3 49 82 53 40 12 SHCS. M10 x 110 L, 4 Nos
70 Nm
1SU06G03
1SU06G04
20
1SU08G06
39 42.6 64 27 57 47 52 16 SHCS. M10 x 90 L, 4 Nos.
1SU08G08
30
1SU09G10
50 60 99.1 39 90 60 65 20 SHCS. M10 x 90 L, 6 Nos.
1SU09G12
ENGINEERING
Ref. No. P03600
PILOT OPERATED PRESSURE
RELIEF CUM UNLOADING VALVES
PPRU
P03600
4
All rights reserved.
Subject to revision.
Technical Specifications
Ordering Code
Construction ............................................... Two stage poppet valve.
Mounting .................................................... Sub-Plate Mounting conforming to ISO 5781
with additional pilot pressure port 'P'
Mounting position ....................................... Optional
Flow direction ............................................. From port 'A' to 'B'
Operating pressure .................................... For port 'A' , 'X' and 'P' ....................... 315
bar For port 'B' ........................................ 60
bar
Hydraulic medium ...................................... Mineral oil
Viscosity range .......................................... 10 Cst to 380 Cst.
Fluid temperature range ............................ -20 ° to +70 °C.
Fluid cleanliness requirement .................... As per ISO 16/13
Maximum flow handling capacity ............... For valve size
10 ...................... 100 Ltrs./min.
20 ...................... 200 Ltrs./min.
30 ...................... 400 Ltrs./min.
Mass .......................................................... Refer individual Table
Design code subject to
Sol. Valve normally opened.
Sol. Valve normally closed.
Omit if not required
External
Internal
50, 100, 200 & 315 bar.
dimensions remain same.
for design code 10 thru 19.
Note : Solenoid (refer spool type) and Subplate to be ordered separately.
Size 10, 20 & 30
Set screw
Pilot optd. Pr. relief
cum unloading valve
Subplate mounting
Spool Type
a
P
A
T
B
S
S
S
PPRU
S10
B
A
Y
Omit
AY50 14
change. Installation
Provision for mounting
Solenoid valve
TThreaded mounting
Size 10, 20 & 30
Size 20 & 30
