1
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EPDT-251b
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1. Usage of the Product
The DD-2 and DD-3 series compact designed direct-acting solenoid valve has stainless steel body and
offers superior corrosion resistance. Because it can be applied to various fluids, it is widely used for water
supply/drainage systems in a house, plant facilities and automatic controllers for industrial use, etc.
2. Features
1. Superior corrosion resistance with stainless-steel-made trim parts.
2. Vertical or horizontal installation is possible.
3. Specifications
Caution
Please confirm that the indications on the product name plate coincide with the
specifications of the ordered product model before usage.
* In case they do not coincide, do not use the product and contact us.
Model
DD-2
DD-2-8
DD-3
DD-3-8
DD-3-8N
Application
Steam, Cold and hot water, Air,
N
2
gas, CO
2
gas (dry), Ar gas,
Oil
Cold and hot water, Air, N
2
gas,
CO
2
gas (dry), Ar gas, Oil
Fluid viscosity
20 cSt or below
Working pressure
0-0.15 MPa
0-0.8 MPa
0-0.15 MPa
0-0.8 MPa
Orifice (mm)
9.5
4.0
9.5
4.0
Cv value
1.7
0.55
1.7
0.55
Allowable valve seat leakage
50 mL/min under standard
conditions
No leakage at the pressure gauge
Max. temperature
175˚C
100˚C
90˚C
Installation posture
(*1)
Vertical or horizontal installation (*1)
(Within 90 degrees from upward position of the coil)
Operation
Nomally closed
M
a
te
ri
a
l
Body
Stainless steel
Plunger
Stainless steel
Valve disc
PTFE
FKM
Connection
JIS Rc screwed
Performance and specifications of coil
Rated voltage
AC 100 / 200 V selective type
AC 110 / 220 V selective type
50 / 60 Hz common
Allowable fluctuation
Rated voltage ±10%
Rated current
0.42 / 0.21 A
0.38 / 0.19 A
Starting current
1.10 / 0.55 A
1.00 / 0.50 A
Insulation class
Insulation class H
Protective structure
Dust tight, Splash proof
Ingress protection code
IP64 (JIS C0920)
Insulation resistance
50 M
Ω
and more / 500 V megger
Withstand voltage test
1500 V / min
•
DD-3-8N is approved product by Japan water works association (JWWA).
•
Not available with pipe end core.
•
Coil equipped with a terminal box (made of plastic) is also available.
•
*1 : See Table 1.
