Kofloc 2412 User manual

FJ400018I1
Created on 2021/12/20
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Precision Needle Valve Model 2412
Large-flow Precision Needle Valve Model 2412D
Instruction Manual
CAUTION
This product is designed to control flows and its maximum operating pressure is limited
to:
MODEL 2412 ：1.0MPa(G)
MODEL 2412D ：1.0MPa(G)
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 2412L/2412T/2412D.
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.

FJ400018I1
Created on 2021/12/20
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1. Features
Model 2412 is a precision needle valve capable of accurately and easily controlling
minute flows of gases and liquids.
Model 2412D is a precision needle valve designed to accurately control relatively
large flows.
Both models are capable of stable and smooth flow control.
2. Installation and Piping
For installation on a panel, remove one mounting nut and insert the needle valve
through the mounting hole (13) from the backside of the panel to the face and then
secure the valve with the nut from the face of the panel.
3. 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.
4. Precautions
1) When storing the needle valve at your premises, installing it in a line, removing it
from a line or test running it for adjustment after installing it in a line, exercise
care to protect its IN and OUT from oily substances and contaminants. They are
a cause of performance degradation or control failure.
2) Model 2412L/2412T/2412D are capable of zero stop, but zero stop is not a function
guaranteed. Never turn the knob by undue force to effect zero stop.
Otherwise, the needle part will be broken to disable flow control. If zero stop is
required, be sure to install a stop valve before the needle valve.

FJ400018I1
Created on 2021/12/20
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【Specifications】
Model 2412
Model 2412D
Adjustable range of
adjusting screw
About 12 turns
About 8 - 12 turns
Types of needle
15 types
3 types
Max. operating pressure
1.0 MPa(G)
1.0 MPa(G)
Fluid contact materials
(B) Brass, NBR, POM, SUS316
(SS) SUS316, FKM, PCTFE
(A) Brass, Al, NBR, POM, SUS316,
(SS) SUS316, FKM, PCTFE
Connecting port
Rc 1/4 (standard) ,
Rc1/8 (Optional)
Rc 3/8 (standard),
Rc1/4 (Optional)
Max. operating
temperature
(B) 70℃
(SS) 120℃
(A) 70℃
(SS) 120℃
Object
Gases and liquids
【Dimensions (mm)】
<MODEL2412L> <MODEL2412T>
<MODEL2412D>
Cut out dimensions

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Created on 2021/12/20
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【Product Warranty Policy】
Thank you for your continued support of KOFLOC products.
Unless specified otherwise in quotations, contracts or specifications when you place
orders for KOFLOC products, the following warranty policy will apply.
Warranty Policy:
①Warranty period
The warranty period is one (1) year from shipment, provided that the product is
used within the KOFLOC specification.
②Scope 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 customer and damage to other
equipment and any other damages due to a failure of the KOFLOC product.
③Non-warranty
The warranty shall not apply to the following failures and damages even if they
occur during the warranty period:
a) Failure due to misuse or improper repair or modification. (Failures
resulting from use under conditions different from the manufacturing
specifications are included.)
b) Damage and failure due to dropping of the product after purchase.
c) Failure due to fire, earthquake, flood, lightning or other natural disaster; or
riot, war or the like.
d) Failure due to intrusion of foreign matter from piping.
e) Failure caused by a specific problem due to combination with other
incorporated 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