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FJ400062B1 

Created on 2021/12/20 

- 1 - 

 

 

 

Precision Needle Valve Model 2420 

             

(Greaseless needle valve) 

Instruction Manual

 

 

 

CAUTION   

 
This product is designed to control flows and can be used at a pressure and temperature 
up to: 
 

Max. operating pressure

  0.6 MPa(G) 

 

Max. operating temperature

  80 

 

The use of the needle valve with gases or toxic gases other than those specified on the 
valve body or at a pressure exceeding the maximum allowable pressure may cause 
serious injury.    Such a way of use is strictly prohibited. 
 
 

Foreword 

Thank you for your selection of Model 2420. 
Prior to using your new needle valve, please read this manual thoroughly to ensure the 
valve will operate to its maximum performance. 

 

The contents of the manual are subject to change without prior notice. 

 

The manual has been carefully created and checked before shipment.    If you notice 
any deficiencies, errors or omissions, however, please inform us. 

 

The warranty period of the needle valve is one year from the date of shipment from 
our plant. 

 

Any failures which may occur during this period and are attributable to our 
workmanship will be corrected free of charge. 

 

KOFLOC shall bear no responsibility whatsoever for breakage or troubles of 
equipment resulting from neglect of the precautions presented in this manual or use 
of the needle valve in manners not described herein. 

Содержание 2420

Страница 1: ... using your new needle valve please read this manual thoroughly to ensure the valve will operate to its maximum performance The contents of the manual are subject to change without prior notice The manual has been carefully created and checked before shipment If you notice any deficiencies errors or omissions however please inform us The warranty period of the needle valve is one year from the dat...

Страница 2: ...aching the knob to the shaft align the knob protrusion with the flat end of the shaft and insert as shown below 3 How to use 3 1 Control of Flow Turn the knob of the needle valve to control the flow Turning it counterclockwise OPEN will increase the flow and clockwise CLOSE will decrease the flow 3 2 Precautions 1 When storing the needle valve at your premises installing it in a line removing it f...

Страница 3: ...ul not to apply a load to the body when removing the joint Should the needle part is loosen tighten it to the body with a torque of 4 N m 6 This product is assembled with oil free specifications without using any greases However it is not a particle free product because it is not assembled in a clean room Therefore when using the product with strict prevention of contamination such as at food prod...

Страница 4: ...te H2O 0 1MPa Minimum Flowrate H2O 0 1MPa Zero stop H2O 0 1MPa When shipping N1 26L min 0 2L min Within about 20mL min 0 87L min 10mL min Within about 1mL min N2 40L min 1L min 1 38L min 30mL min N3 92L min 1 5L min 2 7L min 50mL min N4 112L min 5L min 3 3L min 150mL min N5 182L min 5L min Within about 2L min 4 2L min 150mL min Within about 80mL min CV value The flow rate is based on AIR conversio...

Страница 5: ...ed to the product is the needle number The number of dots machined on the flat surface of the shaft under the knob indicates the needle number As shown in the photo 2 2 dots are N2 left side 3 dots are N3 right side and N5 not shown in the photo has 5 dots Cut out dimensions Φ15 N2 N3 Photo 1 Lot Number Label The 2nd number from the right is the needle number Photo 2 Dots on the Shaft The number o...

Страница 6: ...e of warranty If the KOFLOC product fails during the warranty period due to a cause attributable to KOFLOC KOFLOC shall at its option and expense provide a replacement product or repair the failed product at the KOFLOC factory This warranty however shall not cover damages due to a cause not attributable to KOFLOC opportunity loss lost profit secondary disaster accident compensation suffered by the...

Страница 7: ...rporated equipment f Other failures and damages which are considered not attributable to KOFLOC Please be aware that the warranty shall not cover opportunity loss suffered by you or your customer or damage to other equipment or any other damages due to a failure of the KOFLOC product URL http www kofloc co jp ...

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