SC5H-I3/S
Symbol
1
2
3
M18x1,5 • Q
max
30 l/min (8 GPM) • p
max
350 bar (5100 PSI)
5
10
15
20
(72.5)
(145)
(218)
(290)
0 3 6 9 12 15 18 21 24 27 30
(0.8) (2.4) (4.0) (5.6) (7.1) (7.9)
5
10
15
20
(72.5)
(145)
(218)
(290)
0 3 6 9 12 15 18 21 24 27 30
(0.8) (2.4) (4.0) (5.6) (7.1) (7.9)
050
010
Subject to change · SC5H-I3/S_5045_1en_06/2023
Page 1
www.argo-hytos.com
Check Valve, Poppet-type, Pilot to Open
Technical Features
Functional Description
Characteristics measured at ν = 40 mm
2
/s (195 SUS)
› Hardened and precision working parts
› Sharp-edged ground steel seats for dirt-tolerant performance
› Leak-free closing and suitable for fast cycling with long life
› High flow capacity
› Optional sealed piston and bias spring ranges for back-pressure control
› In the standard version, the valve is zinc-coated for 240 h protection acc. to ISO 9227.
Enhanced surface protection for mobile sector available for the steel parts (ISO 9227, 520 h salt spray)
The valve allows flow to pass from port 2 to 1 while normally closing flow from 1 to 2 with load. When
pressure is applied at port 3. The flow passes from port 1 to 2.
The cartridge valve has a 4:1 pilot ratio. This require minimum one-third of the load pressure applied at port 3
to open the valve. The check valve is also spring closed to secure holding position in static conditions without
the load.
Pressure drop ∆p [bar (PSI)]
Pressure drop ∆p [bar (PSI)]
Flow Q [l/min (GPM)] Flow Q [l/min (GPM)]
Valve size / Cartridge cavity M18x1,5 / I3
Max. flow l/min (GPM) 30 (7.9)
Max. operating pressure bar (PSI) 350 (5080)
Pilot ratio 4:1
Fluid temperature range (NBR) °C (°F) -30 ... +100 (-22 ... +212)
Fluid temperature range (FPM) °C (°F) -20 ... +120 (-4 ... +248)
Weight kg (Ibs) 0,65 (1.43)
Datasheet Type
General information GI_0060 Products and operating conditions
Cavity details SMT_0019 SMT-I3*
Spare parts SP_8010
Technical Data
Pressure drop related to flow rate
pilot open (1→2) free flow (2→1)
40+5 Nm
(29.5+3.7 Ibf.ft)
SC5H - I3 / S 4 - -
010
050
A
B
4:1
Subject to change · SC5H-I3/S_5045_1en_06/2023
Page 2
www.argo-hytos.com
Dimensions in millimeters (inches)
Ordering Code
Check valve, poppet-type,
pilot to open
Pilot ratio
standard
Valve cavity
M18x1,5
Model
screw in cartridge
No designation
S
Seals
NBR
FPM (Viton)
No designation
V
Free flow cracking pressure
1 bar (14.5 PSI)
5 bar (72.5 PSI)
Optional pilot piston seal
without pilot piston seal
with pilot piston seal
Surface treatment
zinc-coated (ZnCr-3), ISO 9227 (240 h)
zinc-coated (ZnNi), ISO 9227 (520 h)
