The Yoshitake DP-12CD is a high-performance, diaphragm-type solenoid valve featuring a direct-acting mechanism and a normally opened configuration with a DC coil. Designed for reliable fluid control, it is constructed with a bronze body and an NBR diaphragm, making it suitable for air, cold and hot water, and oil applications (up to 20 cSt). The valve ensures zero seat leakage and operates efficiently within a pressure range of 0 to 1.0 MPa.

Features

• Horizontal and vertical installation (0.1 MPa or more minimum differential pressure is required for vertical installation).
• Zero valve seat leakage (confirmed visually by pressure gauge).
• Available with FKM (optional).
• Available with a terminal box made of resin (optional).

Solenoid Valve Operations

Voltage and operation	AC voltage	DC voltage
Normally closed	DP-16 (Screwed), DP-18 (Flanged)	DP-12D, DP-16D (Screwed), DP-14D, DP-18D (Flanged)
Normally opened	DP-12C, DP-16C (Screwed), DP-14C, DP-18C (Flanged)	DP-12CD, DP-16CD (Screwed), DP-14CD, DP-18CD (Flanged)

Specifications

Specification	Value
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 leakage (visually confirmed by pressure gauge)
Max. temperature	60°C
Operation	Normally opened
Material (Body)	Bronze
Material (Valve)	NBR (diaphragm)
Connection	JIS Rc screwed

Coil Specifications

Specification	Value
Rated voltage	DC 24V
Rated current	1.13 A
Insulation type	Class H
Protection structure	Dust-proof, Splash-proof
Degree of protection	IP64
Insulation resistance	More than 50 MΩ / 500V megger
Anti-voltage test	1500 V/min

Dimensions and Weights

DP-12CD, DP-16CD (DP-16CD: 15A–50A)

Nominal size	d	L	H	H1	Weight (kg)
10A	Rc 3/8	70	172	14.5	2.1
15A	Rc 1/2	70	172	14.5	2.1
20A	Rc 3/4	80	179	17.5	2.3
25A	Rc 1	95	186	21.0	2.7
32A	Rc 1-1/4	110	213	26.0	3.5
40A	Rc 1-1/2	120	220	29.5	4.1
50A	Rc 2	140	235	36.5	6.0

Note

The DP-18 series is slightly heavier and features a welded flanged structure.

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 where the inlet pressure (P1) is 0.7 MPa, outlet pressure (P2) is 0.5 MPa, and flow rate (V) is 300 L/min, first find the intersection point (a) of the differential pressure [ΔP = 0.7 - 0.5 = 0.2 MPa] and V = 300 L/min. Since this intersection point (a) lies between nominal sizes 25A and 32A, select the larger one, 32A.

INFO

Please refer to the manufacturer's technical documentation for Cv values and calculation formulas.

Structural Drawing