Yoshitake DP-100-D is a pilot-operated piston type solenoid valve with a DC 24V coil, featuring a normally closed configuration and a stainless steel body. This versatile valve can be installed in both horizontal and vertical orientations (within 90 degrees from the upward position of the coil) and provides zero-leakage performance under standard conditions. It is designed to handle a wide variety of fluids including steam, air, cold and hot water, nitrogen gas, dry carbon dioxide, argon gas, and oils under 20 cSt, accommodating a working pressure range of 0 to 1.0 MPa. The valve is available with JIS Rc threaded connections (DP-100-D) or JIS 10K FF flanged connections (DP-100F-D).

Features

• DC voltage piston type solenoid valve.
• Horizontal and vertical installation is available.
• Constructed from stainless steel (SCS14A) with a PTFE valve disc.
• Pilot-operated mechanism with zero allowable valve seat leakage under standard conditions (50 mL/min at air pressure of 0.6 MPa).

Specifications

Specification	DP-100-D (Screwed)	DP-100F-D (Flanged)
Nominal Size	10A-50A	15A-65A
Structure	Pilot-operated piston type	Pilot-operated piston type
Application	Steam, Air, Water, Gas, Oil	Steam, Air, Water, Gas, Oil
Working Pressure	0-1.0 MPa (unusable under vacuum)	0-1.0 MPa (unusable under vacuum)
Min. Differential	0 MPa (0.03 MPa for vertical)	0 MPa (0.03 MPa for vertical)
Temperature Range	5-180°C (no freeze condition)	5-180°C (no freeze condition)
Ambient Temp.	50°C or less	50°C or less
Install Posture	Vertical/Horizontal (within 90°)	Vertical/Horizontal (within 90°)
Body Material	Stainless steel (SCS14A)	Stainless steel (SCS14A)
Disc Material	PTFE	PTFE
Connection	JIS Rc screwed	JIS 10K FF flanged

Coil Specifications

Specification	10-25A	32-65A
Rated Voltage	DC 24V	DC 24V
Rated Current	1.34 A	1.14 A
Allowable Fluctuation	-5% to +10%	-5% to +10%
Insulation Class	Class H	Class H
Protective Structure	Dust tight, Splash proof (IP64)	Dust tight, Splash proof (IP64)
Insulation Resistance	50 MΩ and more	50 MΩ and more
Withstand Voltage	1500 V/min	1500 V/min

Terminal Box

Coils equipped with a terminal box (made of plastic) are also available upon request.

Dimensions and Weights

DP-100-D (Screwed)

Nominal Size	d	L (mm)	H1 (mm)	H (mm)	Weight (kg)
10A	Rc 3/8	70	14.5	143	2.2
15A	Rc 1/2	70	14.5	143	2.2
20A	Rc 3/4	80	17.5	147	2.3
25A	Rc 1	95	21.0	151	2.7
32A	Rc 1-1/4	110	26.0	194	4.3
40A	Rc 1-1/2	120	29.5	200	5.2
50A	Rc 2	140	36.5	209	6.8

DP-100F-D (Flanged)

Nominal Size	d	L (mm)	H1 (mm)	H (mm)	Weight (kg)
15A	15	120	47.5	177	3.5
20A	20	130	50.0	180	4.0
25A	25	145	62.5	193	5.3
32A	32	160	67.5	235	8.1
40A	40	170	70.0	241	9.2
50A	50	195	77.5	250	11.7
65A	50	198	87.5	260	13.5

Operation Mechanism

Opening Operation (Power ON)

When the power is turned ON, the coil is excited and pulls up the plunger to open the pilot valve. Next, the pressure at the upper part of the valve drops since it flows to the outlet through the pilot port. The valve is then lifted up to the open position by the inlet pressure.

Closing Operation (Power OFF)

When the power is turned OFF, the coil excitation is canceled and the plunger drops down by force of the kick spring to close the pilot valve. The pressure at the upper part of the valve rises due to the incoming inlet pressure from the bleed port which is communicated with the inlet. With the support of the kick spring, this makes the valve pushed down to closed position.

Nominal Size Selection

Installation and Piping

Installation Guidelines

• A differential pressure of at least 0.03 MPa is required to actuate the product when the coil is set sideways.
• Install the product vertically to a horizontal piping with the coil faced upward, if using the product for equipment where the pressure difference between the inlet and outlet sides can accidentally become 0 MPa at least temporarily, such as a heat exchanger.
• The nominal size of piping at the product inlet side should not be smaller than that of the product.
• Use stop valves at the inlet and outlet side of the product at full open condition.