Yoshitake DP-100F is a pilot-operated piston solenoid valve designed for precise flow control of steam, air, cold and hot water, nitrogen, carbon dioxide (dry), argon, and oil (20 cSt or less). Built with a cast stainless steel (SCS14A) body and piston, it features exceptional corrosion resistance suitable for clean fluids. The valve utilizes a PTFE gasket to improve air tightness and incorporates an Anti-Sticking Mechanism (ASM) that provides three times more scale resistance compared to conventional models. It operates within a wide pressure range of 0 to 1.0 MPa and connects via JIS 10K FF flanges.

Features

• Ultra-high performance technology offers high precision.
• Three-times more durability than conventional models.
• Anti-Sticking Mechanism (ASM) provides three-times more scale resistance.
• Body and main internal parts made of stainless steel for superior corrosion resistance and clean fluid applications.
• Combined internal component allows for easy cartridge replacement without removing the valve body from the piping.
• Improved air tightness via a PTFE gasket.
• Wide working pressure range of 0-1.0 MPa (0.03-1.0 MPa when the coil is mounted sideways).
• Can be installed horizontally or vertically (within 90 degrees from the upward coil position).

Specifications

Specification	Normally Closed (DP-100F)	Normally Opened (DP-100F-C)
Nominal Size	15A - 65A	15A - 65A
Structure	Pilot-operated piston type	Pilot-operated piston type
Application	Steam, Air, Cold/hot water, N2, CO2 (dry), Ar, Oil (20 cSt or less)	Steam, Air, Cold/hot water, N2, CO2 (dry), Ar, Oil (20 cSt or less)
Working Pressure	0 - 1.0 MPa (unusable under vacuum)	0 - 1.0 MPa (unusable under vacuum)
Min. Differential Pressure	0 MPa (0.03 MPa or more for vertical installation)	0 MPa (0.03 MPa or more for vertical installation)
Valve Seat Leakage	50 mL/min standard (at 0.6 MPa air)	50 mL/min standard (at 0.6 MPa air)
Temperature Range	5 - 180°C (no freeze condition)	5 - 180°C (no freeze condition)
Ambient Temperature	50°C or less (no freeze condition)	50°C or less (no freeze condition)
Body & Piston Material	Cast stainless steel (SCS14A)	Cast stainless steel (SCS14A)
Valve Disc Material	PTFE	PTFE
Connection	JIS 10K FF flanged	JIS 10K FF flanged

TIP

It is recommended to use the DP-200 or DP-200F models for dedicated cold and hot water applications.

Coil Specifications

Specification	AC Coil (AC 100/200V or 110/220V)	DC Coil (DC 24V)
Allowable Fluctuation	Rated voltage -5% to +10%	Rated voltage -5% to +10%
Insulation Class	Class H	Class H
Protective Structure	Dust tight, Splash proof	Dust tight, Splash proof
Ingress Protection	IP64 (JIS C0920)	IP64 (JIS C0920)
Insulation Resistance	50 MΩ and more / 500 V megger	50 MΩ and more / 500 V megger
Withstand Voltage	1500 V/min	1500 V/min

Dimensions and Weights

Nominal Size	d	L	H1	H (DP-100F)	Weight (DP-100F)	H (DP-100F-C)	Weight (DP-100F-C)
15A	15	120	47.5	161	2.7 kg	207	3.0 kg
20A	20	130	50.0	164	3.2 kg	210	3.5 kg
25A	25	145	62.5	177	4.5 kg	223	4.8 kg
32A	32	160	67.5	213	6.9 kg	260	7.2 kg
40A	40	170	70.0	219	8.0 kg	265	8.3 kg
50A	50	195	77.5	228	10.5 kg	274	10.8 kg

Nominal Size Selection

For Steam

When selecting the nominal size of a solenoid valve whose inlet pressure (P1), outlet pressure (P2), and steam (saturated steam) flow rate (W) are 0.5 MPa, 0.3 MPa, and 800 kg/h respectively:

1. Find the intersection point (a) of P1 = 0.5 MPa and P2 = 0.3 MPa.
2. Trace down vertically from point (a) to find intersection point (b) with W = 800 kg/h.
3. Since intersection point (b) lies between nominal sizes 25A and 32A, select the larger size, 32A.

For Water

When selecting the nominal size of a solenoid valve whose inlet pressure (P1), outlet pressure (P2), and flow rate (V) are 0.5 MPa, 0.3 MPa, and 300 L/min respectively:

1. Find the intersection point (a) of the differential pressure before and after the valve (ΔP = 0.5 – 0.3 = 0.2 MPa) and V = 300 L/min.
2. Since this intersection point (a) lies between nominal sizes 25A and 32A, select the larger size, 32A.

Operation Principles

Opening Operation

When the power is turned ON (for normally closed types) or OFF (for normally open types), the coil is excited/canceled and acts on the plunger to open the pilot valve. The pressure at the upper part of the main valve drops as it flows to the outlet through the pilot port, lifting the main valve to the open position by the inlet pressure.

Closing Operation

When the power is turned OFF (for normally closed types) or ON (for normally open types), the pilot valve is closed. The pressure at the upper part of the valve rises due to incoming inlet pressure from the bleed port. This pushes the valve down to the closed position.

Installation and Piping

WARNING

• Minimum Differential Pressure: A differential pressure of at least 0.03 MPa is required to actuate the product when installed vertically with the coil set sideways.
• Vacuum Prevention: If used in a steam line where negative pressure may generate when closed, install a vacuum breaker at the outlet.
• Steam Trapping: When using the product in a steam line, install a steam trap and avoid condensate accumulation at the inlet side.
• Piping Size: Do not reduce the inlet pipe diameter below the nominal size of the valve. Use the stop valves at the inlet and outlet side in full open condition.