Yoshitake MD-53 Product Manual
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Yoshitake MD-53 Product Manual

Two way motor valve
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TWO WAY MOTOR VALVE
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
Caution
1. Overview ································································· 1
2. Specifications···························································· 1
2.1 Specifications and performance of actuator ················ 2
2.2 Flow characteristics ·············································· 3
3. Dimensions and Structure ············································ 4
4. Operation ································································· 7
5.1 Precaution for installation ······································· 8
5.2 Precaution for operation ········································· 9
5.3 Manual operation ··············································· 10
5.4 Precaution for maintenance ·································· 10
5.5 Troubleshooting ················································· 11
MODEL MD-53 and MD-54
PRODUCT MANUAL
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.

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Summary of Contents for Yoshitake MD-53

  • Page 1: Table Of Contents

    TWO WAY MOTOR 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.

  • Page 2: Overview

    Compact size motor valve is often used as a part of automatic fluid control system in manufacturing process which has been increasingly automated. Model MD-53 and MD-54 two way motor valves are widely used in systems of sprinkler, water supply, solar generation and air conditioning as well as in controllers for ON-OFF operation (for heating, cooling or pressurizing) or remote operation.

  • Page 3: Specifications And Performance Of Actuator

    ■ Table of Cv value • MD-53 Nominal size Cv value • MD-54 Nominal size Cv value 2.1 Specifications and performance of actuator Actuator AM1-030 AM1-070 AM1-180 MD-53 15-25A 32-40A Model 15A, 20A 25A, 32A 40A, 50A MD-54 Rated torque...

  • Page 4: Flow Characteristics

    Cv value shown in page 2. The chart for air shows the flow characteristics obtained at the fluid temperature of 20°C. <Example> Model: MD-53, Nominal size: 20A, Inlet pressure: 0.6 MPa Outlet pressure: 0.5 MPa The air flow rate at the conditions...

  • Page 5: Dimensions And Structure

    3. Dimensions and Structure ■ Model MD-53 O: Valve open S: Valve closed Flow direction is not limited. Part name (mm) Body Ball Nominal Weight size (kg) Seat Rc 1/2 Stem Rc 3/4 O-ring Rc 1 O-ring Rc 1 1/4...
  • Page 6 ■ Model MD-54 O: Valve open S: Valve closed Flow direction Part name (mm) Body Ball Nominal Weight size (kg) Seat Rc 1/2 Stem Rc 3/4 O-ring Rc 1 Bracket Rc 1 1/4 Connector Rc 1 1/2 Actuator Rc 2 Cable connector 1.

  • Page 7: Dimensions And Structure Of Cable Connector

    3.1 Dimensions and structure of cable connector Max. A Max. B 取付板 Mounting plate Lock nut Body (mm) Screw Screw length Parallel pipe Mounting hole outer diameter Cable outer diameter thread diameter ΦH Φ5.0-10.5 Φ17 G 3/8 16.7 11.0 (mm) Dimensions of body and cap Dimensions of lock nut Gasket...

  • Page 8: Operation

    4. Operation Actuator operates with either normal or reverse rotation. The stem connected to the output shaft rolls the ball to open or close the valve. ■ Operational principle <Circuit diagram> Actuator LS1, LS2: Limit switch C: Condenser SH: Space heater M: Motor TP Thermal protector The valve closes as switched to [S].

  • Page 9: Procedures For Installation, Operation And Maintenance

    5. Procedures for Installation, Operation and Maintenance 5.1 Precaution for installation Warning 1. The product is not explosion-proof. Do not use it in the area or ambience where explosive gases accumulate. * Using the product under the said conditions may cause fire. 2.

  • Page 10: Precaution For Operation

    11. Do not apply excessive torque when installing the product. Use the torque specified below for screwing in the pipe to avoid the product malfunction. ◼ Tightening torque (N∙m) Nominal size Tightening torque 25-35 40-50 50-60 60-80 75-85 90-110 12. If the surface temperature of the actuator cover exceeds 55°C due to radiant heat, equip the cover with an insulating board appropriately.

  • Page 11: Manual Operation

    9. Wiring method ■ Wiring diagram Actuator Wiring has to be done by users. LS1, LS2: Limit switch C: Condenser Internal wiring SH: Space heater M: Motor TP Thermal protector 5.3 Manual operation When operating the product manually at the time of power failure or emergency, turn off the power source and follow the instructions below.

  • Page 12: Troubleshooting

    5.5 Troubleshooting Trouble Cause How to check Remedy Ball (and motor) 1. Fluid pressure exceeds 1. Check the fluid pressure 1. Adjust the fluid pressure does not rotate. the specified working with a pressure gauge. to the appropriate level. pressure. 2.

  • Page 13: Warranty Information

    Fire, flood, earthquake, thunder and other natural disasters. Consumable parts such as O-ring, gasket, diaphragm and etc. Yoshitake is not liable for any damage or loss caused by malfunction or defect of the product. INTERNATIONAL DEPT. 955-5, Miyamae, Irukadeshinden, Komaki, Aichi, 485-0084, Japan...

This manual is also suitable for:

Md-54

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