SOBD5A-BPY3
7/8-14 UNF • Q
max
40 l/min (11 GPM) • p
max
420 bar (6100 PSI)
0 10 20 30 40
(2.6) (5.3) (7.9) (10.6)
20
12
9
6
(290)
(175)
(130)
(90)
3
(45)
15
(220)
18
(260)
1
2
Pilot ratio 2.5:1 and 5:1
Subject to change · SOBD5A-BPY3_5198_1en_06/2019
www.argo-hytos.com
Page 1
Overcentere Valve Fully Balanced, Internal Drain
Technical Features
Functional Description
Characteristics measured at ν = 40 mm
2
/s (195 SUS)
Pressure drop ∆p [bar (PSI)]
Flow Q [l/min (GPM)]
Valve size / Cartridge cavity 7/8-14 UNF-2A / BPY3
Max. flow l/min (GPM) 40 (10.6)
Relief pressure range 21 32 42
Max. load induced pressure bar (PSI) 175 (2540) 265 (3840) 350 (5080)
Max. relief pressure bar (PSI) 210 (3050) 320 (4640) 420 (6090)
Fluid temperature range (NBR) °C (°F) -30... +100 (-22... +212)
Fluid temperature range (FPM) °C (°F) -20... +120 (-4... +248)
Pilot ratio 2.5:1 5:1
Leakage ml/min 0.3 (5 drops per min)
Weight kg (Ibs) 0.29 (0.64)
Datasheet Type
General information GI_0060 Products and operating conditions
Valve bodies
In-line mounted SB_0018 SB-BPY3*
Sandwich mounted SB-04(06)_0028 -
Cavity details SMT_0019 SMT-BPY3*
Spare parts SP_8010
Technical Data
Flow
1 free flow (2→1)
2 pilot open (1→2)
Pressure drop related to flow rate
Symbol
› The valve prevents runaway ahead of the pump in the event of a negative load
› oad-holding with leak-free closing poppet when the directional control valve is in neutral position
› Pressure relief function protecting the actuator against overloading and pressure peaks
› Integrated check valve acting as an anti-cavitation valve
› When installed close to actuator the valve can be used as a hose burst valve
› Back pressure has got negligible effect on relief setting nor the required pilot pressure
› Setting can be performed during machine operation = leak free closing of adjustable element
› Wide relief pressure range of setting, in standard up to 420 bar (6100 PSI)
› Spring chamber is vented to external drainage port Y.
› In the standard version, the valve is zinc-coated for 520 h protection acc. to ISO 9227
Poppet-type, screw-in motion control valve designed to control the runaway of a negative load. The built-in
check valve allows reverse flow into the actuator, which is protected by the internal pressure relief function.
Back pressure at port 2 has got negligible effect to the pressure relief setting and the required pilot pressure.
2.5:1
5:1
2
5
21
32
42
SOBD5A - BPY3 / H - S - B
Subject to change · SOBD5A-BPY3_5198_1en_06/2019
Page 2
www.argo-hytos.com
Dimensions in millimeters (inches)
Ordering Code
Overcentere valve fully balanced,
internal drain
Vented to Y port
Pilot ratio
standard
Relief pressure range
70 - 210 bar (1020 - 3050 PSI)
106 - 320 bar (1540 - 4640 PSI)
140 - 420 bar (2030 - 6090 PSI)
Valve cavity
7/8-14 UNF
Model
High performance
Seals
NBR
FPM (Viton)
Surface treatment
zinc-coated (ZnNi), ISO 9227 (520 h)
No designation
V
Adjustment option
allen head (Hex. 5) without protective cap
