FLUID POWER SYMBOL
TUCSON
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
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Umbergaon, Gujarat
C1B 246/5, G.I.D.C. Indl. Estate
tucson@vsnl.com
3D ISOMETRIC VIEW
PRESSURE REDUCING/RELIEVING VALVEPA08
Specifications
Figures based on: Oil Temp = 40°C Viscosity = 40 cSt
Rated Flow 22 lpm
Max Pressure 350 bar
Cartridge Material
Working parts : Hardened, ground steel
External surfaces : Zinc plated
Weight (Cartridge only)
PA08: 0.120 kg
Cavity Number SAE08-3 (Refer Cavities Section)
Manifold Material
Aluminium (upto 250 bar)
Add Suffix ‘729’ for SG Iron (350 bar)
Torque into Cavity 30 Nm
Mounting Line
Seal Kit Number SKPA08 (Nitrile) SKPA08V (Viton
®
)
Filtration Level BS5540/4 Class 18/13 (25µ nominal)
Operating Temp -20°C to +90°C (Standard Seals)
Leakage 82 millilitres/min @ 210 bar
Viscosity Range 5 to 500 cSt
3-115.A
HEX ADJUST
5 A/F
17 A/F
7/8" A/F
3/4-16 UNF
1
3
2
3
1
Application
Pressure reducing valves are normally
open valves that are used to maintain
constant downstream pressure lower
than the inlet pressure. They are ideal
for use in two actuator systems or to
protect low pressure actuators such as
brake cylinders, clamping cylinders or
even for joystick operation.
Operation
The PA08 in steady state will allow bi-
directional flow between 1 and 2 with
spring chamber 3 vented. When the
preset pressure at 1 is achieved, the
spool throttles to regulate pressure at
1
by restricting flow at 2.
The valve will
relieve 1 to 3.
Features
Hardened precision spool and sleeve for
long life. A v
ariety of pressure ranges.
High accuracy of pilot operated design
with adjustments for preventing spring
s
from going solid.
Adjustment may be
locked in place. In
with a compact size.
42 43,9
2
1
3
2
PRESSURE CHARACTERISTICS
TO ORDER
T
UCSON
H
YDROCONTROLS
www.tucsonhydrocontrols.com
tucson@vsnl.com
Umbergaon, Gujarat
C1B 246/5, G.I.D.C. Indl. Estate
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
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3-115.B
BASIC CODE
ADJUSTMENT
P: LEAKPROOF SCREW ADJUST
PORT SIZE
3W: 3/8 BSP PORTS
OMIT FOR CARTRIDGE
SEAL KIT
N: NITRILE
PRESSURE RANGE
10: 20 to 140 bar. Std setting 20 bar
20: 125 to 275 bar. Std setting 207 bar
35: 140 to 350 bar. Std setting 275 bar
PA08 P 3W 20 N
BASIC CODE: PA08 3W
3/8" BSP PORTS
COMPLETE VALVE
Pressure (bar)
Flow (lpm)
0
24 16 8 0 8
70
140
210
280
350
16 24
ONLY Body Part Numbers (BSP)
Aluminium SG Iron
3/8” Z10009 3/8” Z10009S
3
2
1
15,2
28,3
63,5
11,131,8
4,8 47,6
O 7 THRO'
2 PLACES
28,3
58
12,7
25,4
3
1
2