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Yoshitake DP-100 Series, Product Manual

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Yoshitake DP-100 Series Product Manual Download Page 1

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EPDT-247i

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MODEL DP-100 series 

Pilot-operated Solenoid Valve 

 

 

PRODUCT MANUAL

 

 

Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product, 

please read this manual before use. This manual shall be kept with care for future references. 

The symbols used in this manual have the following meanings. 

 

          Warning 

This symbol indicates a potentially hazardous situation that, if not avoided, could 
result in death or serious injury. 

          Caution 

This symbol indicates  a  hazardous  situation  that,  if  not  avoided,  may  result  in 
minor or moderate injury or may result in only property damage. 

 

 

Table of Contents 

 

1. Usage of the Product 

1 

2. Specifications 

1 

3. Dimensions and Weights 

2 

4. Operation 

4 

5. Nominal Size Selection   

6 

5.1 Nominal size selection chart 

6 

5.2 Nominal size selection 

9 

6. Installation   

9 

6.1 Piping example 

11 

6.2 Wire method 

12 

7. Operating Procedure   

13 

7.1 Test working 

13 

8. Maintenance 

13 

8.1 Daily and periodic inspections 

14 

8.2 Periodic replacement of parts 

15 

8.3 Troubleshooting 

15 

8.4 Disassembly 

17 

9. Exploded Drawing 

19 

Warranty Information 

 

 

 

Summary of Contents for DP-100 Series

Page 1: ...h or serious injury Caution This symbol indicates a hazardous situation that if not avoided may result in minor or moderate injury or may result in only property damage Table of Contents 1 Usage of the Product 1 2 Specifications 1 3 Dimensions and Weights 2 4 Operation 4 5 Nominal Size Selection 6 5 1 Nominal size selection chart 6 5 2 Nominal size selection 9 6 Installation 9 6 1 Piping example 1...

Page 2: ...re 1 0 MPa 0 03 MPa or more is required for vertical installation Allowable valve seat leakage 50 mL min under standard conditions at air pressure of 0 6 MPa Temperature range 5 180 C no freeze condition Ambient temperature 50 C or less no freeze condition Installation posture 1 Vertical or horizontal installation within 90 degrees from upward position of the coil Material Body Cast stainless stee...

Page 3: ...nd voltage test 1500 V min Performance and specifications of DC coil DP 100 D and DP 100F D Rated voltage DC 24 V Nominal size 10 25A 32 65A Rated current 1 34A 1 14A Allowable fluctuation Rated voltage 5 to 10 Insulation class Insulation class H Protective structure Dust tight Splash proof Ingress protection code IP64 JIS C0920 Insulation resistance 50 MΩ and more 500 V megger Withstand voltage t...

Page 4: ...A Rc 1 1 2 120 29 5 178 4 0 200 5 2 225 4 3 50A Rc 2 140 36 5 187 5 6 209 6 8 233 5 9 Connection JIS 10K FF flanged DP 100F DP 100F D DP 100F C mm Nominal size d L H1 DP 100F DP 100F D DP 100F C H Weight kg H Weight kg H Weight kg 15A 15 120 47 5 161 2 7 177 3 5 207 3 0 20A 20 130 50 0 164 3 2 180 4 0 210 3 5 25A 25 145 62 5 177 4 5 193 5 3 223 4 8 32A 32 160 67 5 213 6 9 235 8 1 260 7 2 40A 40 17...

Page 5: ...ugh the pilot port 5 The valve 7 is then lifted up to open position by the inlet pressure 2 Closing operation Power OFF When the power is turned OFF the coil 1 excitation is canceled and the plunger 2 drops down by force of the kick spring 3 to close the pilot valve 4 The pressure at the upper part of the valve 7 rises due to the incoming inlet pressure from the bleed port 6 which is communicated ...

Page 6: ...going pressure toward the outlet through the pilot port 5 This makes the valve 7 lifted up to opened position by the inlet pressure 2 Closing operation Power ON When the power is turned ON the coil 1 is excited and pulls down the plunger 2 to close the pilot valve 4 The pressure at the upper part of the valve 7 rises due to the incoming inlet pressure from the bleed port 6 which is communicated wi...

Page 7: ...essure P1 outlet pressure P2 and steam saturated steam flow rate W are 0 5 MPa 0 3 MPa and 800 kg h respectively first find intersection point A of P1 0 5 MPa and P2 0 3 MPa Trace down vertically from this intersection point A to find intersection point B with W 800 kg h Since this intersection point B lies between nominal sizes 25A and 32A select the larger one 32A ...

Page 8: ...low rate Q are 0 5 MPa 0 3 MPa and 800 m3 h standard condition respectively first find intersection point A of P1 0 5 MPa and P2 0 3 MPa Trace down vertically from this intersection point A to find intersection point B with Q 800 m3 h standard condition Since this intersection point B lies between nominal sizes 20 A and 25A select the larger one 25A ...

Page 9: ...ure P1 outlet pressure P2 and flow rate V are 0 5 MPa 0 3 MPa and 300 L min respectively first find intersection point A of the differential pressure before and after the valve P 0 5 0 3 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 L min ...

Page 10: ...damage to property at the time of malfunction of the product be sure to install a suitable safety device that controls fluid flow interception release or sounds an alarm 2 The product cannot be used as an emergency shutoff valve The product is not designed as a safety valve such as an emergency shutoff valve If the product is applied to a system that needs safety measures install other equipment b...

Page 11: ...nal size L1 L2 L3 L4 10 25A 200 165 32 65A 275 225 Model DP 100 C DP 100F C mm Nominal size L1 L2 L3 L4 10 25A 230 200 32 65A 300 250 L1 Required space for removal disassembly of the coil L2 L3 L4 Required space for replacement of the product 8 If the product is used outdoors place protective covers or guards above the product in order to avoid exposure to water Failure to follow this notice may c...

Page 12: ...es can accidentally become 0 MPa at least temporary such as a heat exchanger see the table 1 on Page 1 Failure to follow this notice may prevent the product from functioning properly 22 When an automatic control valve is installed at the inlet or outlet side of the product keep more than 3 meters between them Failure to follow this notice may result in malfunction of the product due to differentia...

Page 13: ... 0 75 mm2 or more 4 Install a fuse 3A to protect the electric circuit In addition if the product is used in a fuel supply system install a circuit protector of a rated current shown in the following Rated current of circuit protector A Model DP 100 DP 100F DP 100 C and DP 100F C DP 100 D and DP 100F D Rated voltage AC 100 110 V AC 200 220 V DC 24 V Nominal size 10 25A 0 5 0 3 2 32 65A 0 75 1 0 5 5...

Page 14: ...e stop valve at the outlet side 3 With the product at open position open the stop valve at the inlet side gradually and confirm that the fluid flows to the end of the piping 4 Gradually close the stop valve at the outlet side and confirm the fluid does not leak from the product or connection parts of the piping joints 5 With the product at closed position fully open the stop valves at both the inl...

Page 15: ...e product prior to disassembly 9 When reassembling connect all the parts securely Tighten the bolts uniformly in diagonal positions to prevent uneven tightening 8 1 Daily and periodic inspections Conduct daily and periodic inspection replacement in order to maintain the optimal performance of the product Daily inspection to be conducted once every operational day Item How to inspect Trouble and re...

Page 16: ...100 D or DP 100F D see 1 For Model DP 100 C or DP 100F C see 2 The valve does not close Fluid flow does not stop 1 Plunger a ssy or valve seat is stuck with foreign substances or get damaged 1 Disassemble the product and remove foreign substances Replace the valve complete set with a new one if any damage is observed 2 Plunger a ssy is stuck with foreign substances in the piping 2 Disassemble the ...

Page 17: ...th the specified torque 3 Cover gasket is damaged 3 Replace the cover gasket Cause Remedy 1 No electric conduction trouble with electric circuit Check the power supply and voltage Wires of coil not bound proper for the applied voltage Wire the coil properly for the applied voltage If the trouble still exists replace the coil with new one Voltage fluctuates widely Adjust the electric circuit to reg...

Page 18: ...formed or lost 5 Reassemble the parts in the reverse order of disassembly Replace the gasket at the time of reassembly 1 Attachment of piston rings and inner rings to the valve Caution Since the piston ring and inner ring have installation direction install them as below Incorrect installation may cause operation trouble Put the piston ring and the inner ring at positions in which the slit part of...

Page 19: ... cover complete set to the body with hexagon bolts using the torque specified below Be sure to evenly tighten each hexagon bolt Apply lubricant agent Recommendation SOLVEST No 110 paste STT Inc to the threaded area Tightening torque Nominal size Tightening torque N m 10 15A 8 20A 10 25A 16 32A 23 40 65A 30 OK NG Two slit parts shall not be on the same side ...

Page 20: ... DP 100 DP 100 D Flanged type is available as DP 100F and DP 100F D The parts name shown in the rectangle boxes are available as consumable supply Apply lubricant agent Recommendation SOLVEST No 110 paste STT Inc to the threaded area ...

Page 21: ... DP 100 C Flanged type is available as DP 100F C The parts name shown in the rectangle boxes are available as consumable supply Apply lubricant agent Recommendation SOLVEST No 110 paste STT Inc to the threaded area ...

Page 22: ...e product Yoshitake supplies the repair parts for 5 years otherwise individually agreed 3 This warranty does not cover the damage due to any of below 1 Valve seat leakage or malfunction caused by foreign substances inside piping 2 Improper handling or misuse 3 Improper supply conditions such as abnormal water pressure quality 4 Water scale or freezing 5 Trouble with power air supply 6 Any alterati...

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