Kofloc 2412M Series User manual

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Created on 2021/12/20
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Precision Needle Valve Model 2412M Series
Instruction Manual
CAUTION
This product is designed to control flows and its maximum operating pressure is limited
to:
Model 2412M ：1.0 MPa(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 2412M series.
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.

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1. Features
This is an enhanced model of the KOFLOC Precision Needle valve Model 2412 which
now incorporates a multi-dial that allows the user to set desired flow rates by dial
operations. This valve makes the most of the rotation-to-flow linearity and
repeatability performance of the 2412 needle.
・Since a precision needle valve usually has superior flow characteristics and
repeatability, it can be used in place of a needle valve flow-meter.
・Wide variations are available for both the needle valve (Type T, Type L, and so on) and
the multi-dial (Standard Type, Round Type, and so on).
Note: No scale calibration is required for the multi-dial.
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 set the
projection of the multi-dial on the hole of φ3.5 or φ2, 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
(CLOSE) will decrease the flow and clockwise (OPEN) will increase 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 2412M Series 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.

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【Specifications】
Model 2412M
Regulating screw rotating
speed
Multi-dial: 10 turns(Over-scale possible)
Needle valve: Approx. 12 turns
Multi-dial scale
3-digit setting(000-999)
Multi-dial type
A: Standard type multi-dial
B: Round type multi-dial
Fluid contact materials
(B) Brass, NBR, POM, SUS316
(SS) SUS316, FKM, PCTFE
Connecting port
Rc 1/4 (Standard) Rc 1/8(Optional)
Max. operating temperature
(B) 70℃(SS) 120℃
Object
Gases and liquids
【Dimensions (mm)】
<2412MAL>
<
<2412MAT>
Cut out dimensions

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<2412MBL>
<2412MBT>
Cut out dimensions

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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