Pilot Operated Check Valve in In-Line Body

IC5H Qmax 80 l/min (21 GPM)  pmax 350 bar (5100 PSI)

Technical Features

›› Hydraulic pilot operated check valve, poppet design, for simple in-line connection
›› Leak-free closing and long service life of built-in check valves thanks to used quality
materials and hardened key components
›› High flow capacity at a low pressure drop
›› In the standard version the surface of body and valves is zinc coated for corrosion
protection 240 h in NSS acc. to ISO 9227

Functional Description

Check valves, built in in-line body, allow free flow from the pump to the actuator (direction
V1→C1, V2→C2). In opposite direction from the consumer to the tank (direction C1→V1,
C2→V2) the valves are mechanically opened by pilot pressure sensed in the second pipeline of
actuator and acting on the face surface of special piston. The pilot operated check valves secure
the position of loaded actuator when the pump is off, and the check valves are closed by pressure
induced by load. The pilot ratio is a min. ratio of system and pilot pressure needed for opening the
check valves. The basic position of valve cone is assured by weak spring.
Typical hydraulic circuit with a pilot
operated check valve Symbol V1 V2

C1 C2

C1 C2
Technical Data

V1 V2 Maximal flow l/min (GPM) 20 (5.3) 40 (11) 60 (16) 80 (21)

Connecting threads for fittings G 1/4“ G 3/8“ G 1/2“ G 3/4“
Pilot ratio 6:1 6:1 4:1 3,5:1
Max. operating pressure bar (PSI) 350 (5080)
Cracking pressure of check valve bar (PSI) 1 (14.5)
P T Fluid temperature range °C (°F) -30 ... +80 (-22 ... +212)
Weight (one-side valve „A“) kg (Ibs) 0.67 (1.48) 0.63 (1.39) 1.09 (2.40) 1.97 (4.34)
Weight (both-side valve „C“) kg (Ibs) 0.68 (1.50) 0.64 (1.41) 1.12 (2.47) 2.01 (4.43)

Datasheet Type
General information GI_0060 Products and operating conditions

Characteristics measured at ν = 32 mm2/s (156 SUS)

Pressure drop related to flow rate

ICPH-20P/HA4-010-A ICPH-40P/HA4-010-A
Pressure drop ∆p [bar (PSI)]

Pressure drop ∆p [bar (PSI)]

(290) 20 (580) 40 2
1
(220) 15 (440) 30

(145) 10 (290) 20
1 2 Flow in direction
(75) 5 (145) 10 1 C1 → V1 (C2 → V2)
1
2 1 2 2 V1 → C1 (V2 → C2)
0 5 10 15 20 0 10 20 30 40
(1.3) (2.6) (4.0) (5.3) (2.6) (5.3) (7.9) (10.6)

Flow Q [l/min (GPM)] Flow Q [l/min (GPM)]

ICPH-60P/HA4-010-A ICPH-80P/HA3-010-A
Pressure drop ∆p [bar (PSI)]

Pressure drop ∆p [bar (PSI)]

(290) 20 (290) 20

(220) 15 1 (220) 15 1

(145) 10 (145) 10
2 2

(75) 5 (75) 5

2 1 2 1
0 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80
(2.6) (5.3) (7.9) (10.6) (13.2) (15.9) (2.6) (5.3) (7.9) (10.6) (13.2) (15.9) (18.5) (21.1)

Flow Q [l/min (GPM)] Flow Q [l/min (GPM)]

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Subject to change · IC5H_5040_1en_10/2020
 Dimensions in millimeters (in)

L A L B B
F G F
H H J

C


D
K

K
I
Dimension IC5H-20P/H IC5H-40P/H IC5H-60P/H IC5H-80P/H
A 64 64 80 100
B 15 15 17.5 20
C 40 40 50 60
ØD* M8 x 1.25 – 15 M8 x 1.25 - 15 6.5 8.5
E 8 8 15 15
F 14 14 21 25
G 36 36 38 50
H G 1/4“ G 3/8“ G 1/2“ G 3/4“
I 13 13 16 21
HEX J 22 (tightening torque 50 Nm) 22 (tightening torque 50 Nm) 27 (tightening torque 70 Nm) 38 (tightening torque 120 Nm)
K G 1/4“ G 3/8“ G 1/2“ G 3/4“
L 27 27 32 / 26 41

*Connecting thread M8 x 1.25 – 15 is machined only at the type IC5H-20P/H and IC5H-40P/H.
Other types are only provided with a through-going hole for fixing screw (ØD 6.5 / ØD 8.5 mm [0.26 / 0.34 in]).

Functional Symbols

IC5H-xxP/HA ICPH-xxP/HC
V1 V2 V1 V2

C1 C2 C1 C2

Note: Thanks to symmetrical design the in-line body with a pilot operated check valve in 1-channel (IC5H-xxP/HA) can be used by
exchanging 1 / 2 ports as the in-line body with pilot operated check valve in 2-channel (IC5H-xx/HB)

Ordering Code

IC5H - P/H - 010 -A

Pilot operated check valve Surface treatment
in in-line body zinc-coated (ZnCr-3), ISO 9227 (240 h)

Maximal flow range Seals

20 l/min (5 GPM) 20 No designation NBR
40 l/min (11 GPM) 40
60 l/min (16 GPM) 60
80 l/min (21 GPM) 80 Cracking pressure of check valve
1 bar (14.5 PSI)
Body connection
rectangular Pilot ratio
3 3.5:1
Model 4 4:1
High performance 6 6:1

List of manufactured types:

Valve design
IC5H-20P/HA6-010-A A check valve built in 1-channel
IC5H-20P/HC6-010-A C check valve built in 1 and 2-channel
IC5H-40P/HA6-010-A
IC5H-40P/HC6-010-A
IC5H-60P/HA4-010-A
IC5H-60P/HC4-010-A
IC5H-80P/HA3-010-A
IC5H-80P/HC3-010-A

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Subject to change · IC5H_5040_1en_10/2020