DH6/10

Slow return check valve (2)
Flange connection type
Hydraulic symbols
A
B
Slow return check valve (2)
3-12
Overview
This slow return check valve, in which a
check valve is assembled into the variable
throttle valve, can restrict the flow in one
direction and allow the flow in the opposite
direction to pass freely.
Features
1. As this is a needle valve, fine adjustments
can be made.
2. The throttle opening can be adjusted even
during operation by turning the adjust
thread.
3. As a lock nut is installed, there is no
change in the throttle opening by vibration
of the pipe during operation.
Specifications
Flange
Valve type Flange type Connection diameter Mass
Accessories
Type indication
Slow return check valve
Nominal dimension
52, 62, 82, 102
Connection method
P = Gasket connection type
F = Flange connection type
Nominal dimension
Nominal dimension
Maximum working pressure MPa (kgf/cm 2 )
Maximum flow rate L/min
Cracking pressure MPa (kgf/cm 2
Gasket connection type
Mass kg
Flange connection type
When you use a flange,
please place an order
for the left flange type.
For the dimension
drawing, refer to page
16 of the appendix.
Mounting bolt
Type Hexagon socket head cap thread Quantity Tightening torque Nm (kgfcm)
pcs.
pcs.
pcs.
Pressure drop characteristics (viscosity 36 mm 2 /s(cSt))
Pressure drop amount (MPa)
Flow rate (L/min)
Type of hydraulic oil
No symbol Mineral based hydraulic oil
V Phosphate ester based hydraulic oil
W Fatty ester based hydraulic oil
Water-glycol based hydraulic oil
Shape of adjustment part
4= Thread adjustment (without cap)
Series number: 10
●When the throttle valve is fully open and
the check valve is free flow (B→A)
Pressure drop amount (MPa)
●When the throttle valve is fully open (A→B)
Flow rate (L/min)