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EPDT-213b

 

 

 

1. Specifications

 

 

 

Body

 

Model

 

OB-30 

OB-30U 

OB-31 

OB-31U 

Purpose

 

For heating

 

For cooling

 

Application

 

Steam, Hot water

 

Cold water, Refrigerant

 

Maximum pressure

 

1.0 MPa (1.7 MPa for hot water)

 

1.7 MPa

 

Max. differential pressure

 

1.0 MPa

 

Valve seat leakage

 

0.05% or less of rated flow

 

Max. temperature

 

185°C 

M

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Body

 

Bronze 

Valve disc

 

 

PTFE 

Valve seat

 

Stainless steel 

Connection

 

JIS Rc screwed 

JIS Rc screwed 

(union joint) 

JIS Rc screwed 

JIS Rc screwed 

(union joint) 

 

 

Sensor

 

Heated fluid

 

Cold and hot water,   

Oil, Liquid 

Cooled fluid

 

Maximum pressure

 

1.0 MPa

 

M

a

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l

 

Thermal bulb

 

Copper pipe 

(Nickel chrome plated) 

Capillary tube

 

Copper 

Flexible tube

 

Stainless steel 

Standard capillary length

 

2 m 

Connection

 

JIS R1/2 screwed 

 

Available with thermal well (stainless steel made).

 

 

Available with capillary of 3 or 5 meters.

 

 

 

 

Temperature adjusting range 

 

Temperature adjusting 

range (°C)

 

Withstand 

temperature (°C)

 

    0-35

 

75

 

25-70

 

110

 

40-100

 

140

 

60-130

 

170

 

70-150

 

190

 

 

The  term  “withstand  temperature”  means  the 
temperature from pressure resistance of the bellows. 

 

 

The  maximum  temperature  of  the  thermal  bulb 
for cooling is 100°C.

 

 

          Caution

 

Please confirm that the indications on the product correspond with the specifications 
of the ordered product model before use. 
* If they are different, please contact us without using the product. 

Содержание OB-30

Страница 1: ...d 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 Conten...

Страница 2: ...Pa Material Thermal bulb Copper pipe Nickel chrome plated Capillary tube Copper Flexible tube Stainless steel Standard capillary length 2 m Connection JIS R1 2 screwed Available with thermal well stai...

Страница 3: ...Nominal Size d L Weight kg Capillary length Weight 15A Rc 1 2 75 2 1 2 m 0 6 kg 20A Rc 3 4 80 2 2 25A Rc 1 90 2 4 OB 30U OB 31U OB 30U OB 31U Body mm Sensor Nominal Size d L Weight kg Capillary lengt...

Страница 4: ...lve When the temperature of the bulb lowers the downward force applied to the spindle by the spring 11 opens the valve The set temperature can be adjusted by turning the handle 12 to change the load o...

Страница 5: ...orce to the spindle 7 to open the valve When the temperature of the bulb lowers the downward force applied to the spindle by the spring 11 closes the valve The set temperature can be adjusted by turni...

Страница 6: ...P2 and steam flow rate are 0 2 MPa 0 15 MPa and 20 kg h respectively first find intersection point a of the inlet pressure of 0 2 MPa and the outlet pressure of 0 15 MPa Trace down vertically from th...

Страница 7: ...re and flow rate are 0 3 MPa 0 15 MPa and 1 m3 h respectively first find intersection point a of the differential pressure P of 0 15 MPa 0 3 MPa 0 15 MPa before and after the valve and the flow rate o...

Страница 8: ...Failure to follow this notice hampers correct temperature regulation 11 Do not apply excessive load torque or vibration to the product Failure to follow this notice may result in malfunction or a dra...

Страница 9: ...lve Capillary tube 5 4 Assembly of body and sensor Place the bellows follower 13 which is packaged with the body into the bellows 14 with its flat surface facing downward and then screw it into the lo...

Страница 10: ...r hammer and can heavily damage the main parts of the product Be sure to follow the procedure below 1 Close the stop valves at the inlet and outlet sides of the product Open the bypass stop valve and...

Страница 11: ...t us to retighten the gasket or disassemble the product to replace the part 2 Balance bellows 6 is damaged 2 Please contact us to disassemble the product and replace the part OB 31 OB 31U Trouble Caus...

Страница 12: ...hock to the thermal bulb Warning Inspection must be done by experienced professional or valve manufacturer Completely discharge the pressure inside of the product piping and equipment prior to disasse...

Страница 13: ...improvement without any prior notice After the discontinuation of the product Yoshitake supplies the repair parts for 5 years otherwise individually agreed 3 This warranty does not cover the damage d...

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