PILOT-OPERATED CHECK VALVE（HK3）■FeaturesThis type of valve usually functions as a normal check valve that allows fluid flow only
in one direction by maintaining the specified cracking pressure and completely stops
fluid flow in the reverse direction. However, it also enables fluid flow in the reverse
direction on application of external pilot pressure.
● The pilot pressure has to be at least 40% of the OUT port pressure. The pilot-pressure
needed for decompression is, however, 10% of the OUT port pressure or greater.
● If subplate SHQ**-**T*(A) is necessary, please order one separately.
● For gasket-connection type check valves, finish the mounting faces to the same
quality as the valve faces (3.2 µmRz).

■Description of the model designation

HK3ｰYG2E（D）ｰ03（A）

W: Decompression
Y: Pilot-operated type

Model No.

Piping method

Drain
No code: Internal drain
D: External drain

Nominal size

T : Thread type
F : Flange type

Cautions on use

Cracking pressure
1: 0.04 MPa
2: 0.35 MPa
3: 0.46 MPa
4: 0.53 MPa■Internal drain Type
NominalSizeRated Flow

Max. Operating Pressure(L/min)

(MPa)

02

12—

HK3ｰYG*Eｰ02B—

03

40

HK3ｰYT*Eｰ03A

HK3ｰ*G*Eｰ03A—

04

75

Model
Gasket-connection TypeThread-connection Type21—06

120

NominalSize

Rated Flow

Max. Operating Pressure(L/min)

(MPa)

02

1203

40

Flange-connection Type—

HK3ｰ*F*Eｰ04A

HK3ｰ*T*Eｰ06A

HK3ｰ*G*Eｰ06A

Thread-connection TypeGasket-connection Type

Flange-connection Type—

HK3ｰYG*EDｰ02B—

HK3ｰ*G*EDｰ03A—

HK3ｰ*F*Eｰ06A■External drain Type

04

7506

120

Model

HK3ｰYT*EDｰ03A21——

HK3ｰ*T*EDｰ06A

HK3ｰ*F*EDｰ04A

HK3ｰ*G*EDｰ06A

HK3ｰ*F*EDｰ06A■Outside dimensions
HK3ｰYG*E（D）ｰ02B

HK3ｰ*T*E（D）ｰ**A

2−JIS B2401−1AP5（O-ring）

Pressure gauge
connection port Rc1/4

2−JIS B2401−1AP9（O-ring）
50.5

40

9.5CE

D6910GF37

17 10

32−RcJ

H

2−M66 9A2−Rc1/4

B

28●For the sub-plate SHQ02-02T1, refer to page B-22.

Mass: 1.2㎏
Unit: mm

ModelAB

C

DEF

GH

J

Mass (kg)HK3ｰ*T*E（D）ｰ03A669614084

69501366

3/84

HK3ｰ*T*E（D）ｰ06A72108

165

10179601472

3/4

5.5C−55

SOLENOID VALVES / DIRECTIONAL CONTROL VALVESPilot
E: External pilot

G : Gasket type
Please read the Operating Manual
carefully to ensure correct usage.

C■Outside dimensions
HK3ｰ*G*E（D）ｰ**A

SHQ**ｰ**T1（A）
Pressure gauge
connection port Rc1/44−φv
φw counter bore depth 1

Eikℓ

Bsq

2−φN（O-ring）

Ljp

2−φKnf mghr2-φ7, depth 8aFbcde

GC2−φaa

D

H−MJ

2−φbb

2−Rc1/42−RcZ

HK3ｰ*F*E（D）ｰ**APressure gauge
connection port Rc1/48−MLFlangeCFlange

GFE

DJSOLENOID VALVES / DIRECTIONAL CONTROL VALVEStu

AKC

2−φP（O-ring）

X−MyK

A

JB

2−RcN

H
NOTE: DR is necessary only for external drain type (HK3-Y**ED-**A).
For sub-plate SHQ**-**T3, refer to page L-5.

Unit: mmAB

CDE

FGH

JKLN

M

Mass (kg)HK3ｰ*G*E（D）ｰ03A

188

117

65

66.7

42.9

401541066JIS B 2401ｰ1AP11JIS B 2401ｰ1AP214HK3ｰ*G*E（D）ｰ06A102

165

75

79.460.3561541066JIS B 2401ｰ1AP16JIS B 2401ｰ1AG307hModel

Modelabcdefgjkmnpqrstuv

w

aabb

SHQ03ｰ03T11951

67

106.4

130

711 21.5− 21.5i36

43 0538

43111651125

1117.5 4x

10 3/8 5yz

14.5

SHQ03ｰ04T1

1951

67

106.4

130

711 21.5− 21.536

43 4.5

74552

11174

1130

11

17.5 4

10 1/2 5

14.5

SHQ06ｰ06T1246880

124.4

146

1116 21− 3949

60 065460

18196

1135

1117.5 4

10 3/4 619SHQ06ｰ08T1246880

124.4

146

1116 21− 394960 676572

18108

1143

1117.5 4101915A

BCDEFGHJKL

N

Used Flange

Mass (kg)HK3ｰ*F*E（D）ｰ04A66

90

14084

6950

1366

56

36

101/4

JIS B 2291ｰSSA154.5

HK3ｰ*F*E（D）ｰ06A72102

165

101

7960

13726040

101/4

JIS B 2291ｰSSA206ModelC−56