Yoshitake DP-12C normally opened diaphragm type solenoid valve. This model features a bronze body and AC coil, designed for use with air, cold and hot water, and oil (20 cSt or less). It supports a working pressure range of 0-1.0 MPa and allows for both horizontal and vertical installation.

Features

• Horizontal and vertical installation.
• Normally opened operation with an AC coil.
• Screwed JIS Rc connection.

Specifications

Item	Specification
Application	Air, Cold and hot water, Oil (20 cSt or less)
Working pressure	0-1.0 MPa (unusable under vacuum)
Min. differential pressure	0 MPa (0.1 MPa or more is required for vertical installation)
Valve seat leakage	No (by confirming pressure gauge visually)
Max. temperature	60°C
Operation	Normally opened
Material (Body)	Bronze
Material (Valve)	NBR (diaphragm)
Connection	JIS Rc screwed

Available Options

• Available with FKM diaphragm/O-rings.
• Available with a terminal box (made of resin).

Specifications of Coil

Item	Specification
Rated voltage	AC100/200V, AC110/220V
Connection method	Selection type 50/60 Hz common
Voltage fluctuation tolerance	Rated voltage ±10%
Rated current	0.42/0.21A (100/200V), 0.38/0.19A (110/220V)
Starting current	1.64/0.82A (100/200V), 1.48/0.74A (110/220V)
Insulation type	Class H
Protection structure	Dust-proof, Splash-proof
Degree of protection	IP64
Insulation resistance	More than 50MΩ / 500V megger
Anti-voltage test	1500 V/min

Dimensions and Weights

Nominal size	d	L (mm)	H (mm)	H1 (mm)	Weight (kg)
10A	Rc 3/8	70	172	14.5	1.4
15A	Rc 1/2	70	172	14.5	1.4
20A	Rc 3/4	80	179	17.5	1.6
25A	Rc 1	95	186	21.0	2.0
32A	Rc 1-1/4	110	213	26.0	2.8
40A	Rc 1-1/2	120	220	29.5	3.4
50A	Rc 2	140	235	36.5	5.3

Parts and Materials

No.	Name of Parts	Material
1	Body	Bronze (CAC406)
2	Cover	Bronze (CAC406)
5	Pilot Valve Seat	Stainless Steel (SUS304)
7	Diaphragm	NBR
11	Pilot Disc	NBR
13	Pilot Valve	Stainless Steel (SUS304)
21	Plunger	Stainless Steel (SUS)
27	Coil	-

(Note: This is a selected list of primary wetted and operating parts from the full assembly drawing).

Sizing Charts

Nominal Size Selection Chart (For Air)

How to use the chart: When selecting the nominal size of a solenoid valve whose inlet pressure (P1), outlet pressure (P2), and air (20°C) flow rate (Q) are 0.5 MPa, 0.35 MPa, and 600 m³/h (standard condition), respectively, first find intersection point (a) of P1 = 0.5 MPa and P2 = 0.35 MPa. Trace down vertically from this intersection point (a) to find intersection point (b) with Q = 600 m³/h (standard condition). Since this intersection point (b) lies between nominal sizes 20A and 25A, select the larger one, 25A.

Nominal Size Selection Chart (For Water)

How to use the chart: When selecting the nominal size of a solenoid valve whose inlet pressure (P1), outlet pressure (P2), and flow rate (V) are 0.7 MPa, 0.5 MPa, and 300 L/min, respectively, first find the differential pressure [ΔP = 0.7 - 0.5 = 0.2 MPa] intersection point (a) with V = 300 L/min. Since this intersection point (a) lies between nominal sizes 25A and 32A, select the larger one, 32A.