1/6UZPD30 | Data sheet - Operation Manual WK 499 840 | 03.2021
APPLICATION
Pressure relief valves are designed to limit maximum pressure in the entire
hydraulic system or in its part. Depending on the type of mounting in the
system, direct operated pressure relief valves type UZPD30… can be screwed
(cartridge version), mounted into threaded connections (version for threaded
connection) or mounted to subplate (version for subplate mounting).
DESCRIPTION OF OPERATION
Direct operated pressure relief valve type UZPD30... mainly consists of body 1,
poppet 2, spring 3, set screw 4. Poppet 2 is a working element. Cracking
pressure setting is made by variation of spring tension 3 by means of set
screw 4. Various springs 2 (exchangeable) correspond to various ranges of
cracking pressure adjustment. A dumping element 5 is used to eliminate
vibrations of the valve.
DATA SHEET - OPERATION MANUAL
Direct operated pressure relief valve UZPD 30
NS 30 | p
max
35 MPa | Q
max
330 dm
3
/min | WK 499 840
TECHNICAL PARAMETERS
hydraulic fluid mineral oil
required fluid cleanliness ISO 4406 class 20/18/15
nominal fluid viscosity 37 mm
2
/s at temperature 55°C
viscosity range 2,8 ÷ 380 mm
2
/s
uid temperature range (in a tank) recommended: 40÷55°C; max. -20 ÷ +70°C
ambient temperature range -20 ÷ 70°C
max. operating pressure 35 MPa
max. pressure (port T) 31,5 MPa
weight
UZPD30...K... UZPD30...G... UZPD30...P...
2,2 kg 13,9 kg 13,9 kg
assembly and operation requirements at www.operating-conditions.ponar.pl
version UZPD30-02SK/200
T
P
T
P
3
2
4
5
1
UZPD30 - 02 S K/200
P
T
50
100 150
200
250
300 350
50
100
150
200
250
300
350
Q
[
dm /min
]
p
[
bar
]
3
HYDRAULIC DIAGRAM
2/6UZPD30 | Data sheet - Operation Manual WK 499 840 | 03.2021
OVERALL AND CONNECTION DIMENSIONS
version for threaded connection UZPD30...G...
PERFORMANCE CURVES
measured at viscosity ν = 41 mm
2
/s and temperature t = 50°C
characteristics for working pressure during ow
1. set screw
2. plug G 1 ½ (additional connection P)
P
T
50
100 150
200
250
300 350
50
100
150
200
250
300
350
Q
[
dm /min
]
p
[
bar
]
3
T
P
(
P
)
273
T
P
(
P
)
60
90
S13
S19
S46
S60
100
O
63
M10 depth 25 - 2 holes
G 1 1/2
O
65
depth 25 - 3 holes (P, (P), T)
depth 0,8 - 3 depth holes
O
11 - 4 holes
100
130
25 130
35
85
18089
= =
30
1
2
T
P
(
P
)
273
T
P
(
P
)
60
90
S13
S19
S46
S60
100
O
63
M10 depth 25 - 2 holes
G 1 1/2
O
65
depth 25 - 3 holes (P, (P), T)
depth 0,8 - 3 depth holes
O
11 - 4 holes
100
130
25 130
35
85
18089
= =
30
1
2
3/6UZPD30 | Data sheet - Operation Manual WK 499 840 | 03.2021
OVERALL AND CONNECTION DIMENSIONS
version for cartridge mounting UZPD30...K...
1. set screw
2. o-ring 49 x 3 - 1 pc./set
3. back up ring 55 x 50,4 x 1,4 - 1 pc./set
4. seal ring (elastomeric-metal)
53 x 42,7 x 3 - 1 pc./set
5. valve cavity
T
(
P
)
P
(
T
)
(
P
)
O
38,7
23
29
O
30
O
30
84
0,5 x 45
v
110
45
54,9
O
O
55H9
M60 x 2
a
0,1 A
A
fitting depth
^
0,1 A
1,25
1,25
version for cartridge mounting UZPD30...K...
60
5
2
0
°
make rounded
corners
143
1
2
3
S13
S19
S46
S60 tightening torque Md = 200 Nm
M60 x 2
88
222
O
63
170
3
4
2
,
5
4/6UZPD30 | Data sheet - Operation Manual WK 499 840 | 03.2021
OVERALL AND CONNECTION DIMENSIONS
version for subplate mounting UZPD30...P...
T
P
(
P
)
T
P
(
P
)
S13
S19
S46
S60
1
O
11 - 4 holes
89 180
273
2
3
G 1 1/2 depth 22
O
65 depth 2,5
100
==
25 130
130
90
==
T
P
130
M10 depth 18 - 4 holes
35
85
25
==
100
130 (min)
180 (min)
O
30 (max) - 2 holes (P, T)
0,63
r
0,01/100 mm
5
4
O
63
1. set screw
2. plug G 1 ½ (additional connection P)
3. o-ring 34 x 3 - 2 pc./set
4. mounting holes conguration of subplate
5. required surface quality of the valve contact surface
Fixing screws M10 x 110 - 10.9 according to PN-EN ISO 4762
(PN / M-82302) - 4 pcs / set; ordered separately;
tightening torque M
d
= 68 Nm
T
P
(
P
)
T
P
(
P
)
S13
S19
S46
S60
1
O
11 - 4 otw
89 180
273
2
3
G 1 1/2 gł 22
O
65 gł 2,5
100
==
25 130
130
90
==
T
P
130
M10 gł 18 - 4 otw
35
85
25
==
100
130 (min)
180 (min)
O
30 (max) - 2 otw (P, T)
0,63
r
0,01/100 mm
5
4
O
63
5/6UZPD30 | Data sheet - Operation Manual WK 499 840 | 03.2021
UZPD
3 4 51 6 72
HOW TO ORDER
—
*
/
30
1 nominal size (NS)
NS30 = 30
2 series number
series 02 = 02
(00-09) connection and installation
dimensions unchanged
3 adjustment method
hexagon socket set screw = S
4 type of connection
cartridge mounting = K
for threaded connection = G
for subplate mounting = P
5 pressure setting
up to 2,5 MPa = 25
up to 5 MPa = 50
up to 10 MPa = 100
up to 20 MPa = 200
up to 35 MPa = 350
6 sealing
NBR (for uids on mineral
oil base) = Ø
FPM (for uids on phosphate ester
base) = V
7 further requirements = *
(to be agreed upon with the Manufacturer)
Ø indicates that the box should be left blank. The symbols in bold are the preferred versions available in short delivery time.
Coding example: UZPD30-02SK/350
S
6/6UZPD30 | Data sheet - Operation Manual WK 499 840 | 03.2021
CONTACT
PONAR Wadowice S.A. tel. +48 33 488 21 00
ul. Wojska Polskiego 29 www.ponar-wadowice.pl
34-100 Wadowice