Flow Control Valves
<<Return to previous page
Precision Needle Valve w/Non-rotary Needle MODEL 2412 SERIES Bellows Needle Valve (for rigid control of leaks) MODEL 2450 SERIES
Simplified Paramount Miniature Needle Valve MODEL 2400 SERIES Multidial Type Precision Needle Valve MODEL 2412M SERIES
Variable Secondary Pressure Flow Controller MODEL 2203 SERIES Variable Primary Pressure Flow Controller(Not subject to supply pressure variations) MODEL 2204 SERIES
All-Teflon Constant Flow Valve for Liquids/Chemicals MODEL 2600 SERIES Constant Flow Valve for Liquids MODEL 2600 SERIES
  <<Return to previous page     <<Return to HOME Page
Check to see which best fit your needs. If you have any questions, please call for assistance at 1-800-790-7837 or e-mail sales@netmotion.com
 Flow Control Valves
   
 
Precision Needle Valve w/Non-rotary Needle
MODEL 2412 SERIES
 

This needle valve has been designed to control minute gas and liquid flows with precision and ease. Design allows the rotation of the regulating screw to transform into linear motion of the needle without subjecting the needle to gaps and/or vibrations produced by the screw,so smooth,stable flows can be ensured.

 

 
Features
  • Capable of controlling ultra-minute flows
    Very accurate,stable control of ultra-minute flows up to 1 ml/min possible
  • Wide variations of needle type
    15 types of needles are available for your choice of the type that best suits your needs.
  • Needle of non-rotary structure
    Because this valve is constructed so that the rotation of the regulating screw is transformed into linear motion of the needle,the valve has a longer life in addition to superior control performance.
  • Superior temperature chacacteristics: 15-35°C
    The valve counts on an outstanding temperature characteristic(flow fluctuations remain within an insignificant range of 0.3%/°C to ambient temperature variations) thanks to the temperature compensation system incorporated in the valve's needle and orifice. This temperature compensation system is a utility model of KOFLOC registered at the United States Patent and Trademark Office.(Optional specification for needles #SS1 to #3B-BS)
    This temperature compensation system is applicable to gases only,and not to liquids,because the viscosity of a liquid may fluctuate depending upon the temperature conditions.  
  • Capable of controlling ultra-minute flows
    Can respond to a wide range of flows from ultra-minute flows of 0.5-3 ml/min to flows of 3-30 l/min.
  • The incorporated precision needle valve allows a delicate control of flows.
    The effective revolving speed of the needle valve can be maximized by specifying a maximum flow and normal supply pressure.
  • Wide variations
    Four total lengths of the flowmeter are available:126,156,206,and 256 mm,for your selection according to your needs.
  • Two types of valve arrangement
    The needle valve can be laid out either at the top or at the bottom of the meter.Choose the type that best suits your needs.
  • Measurement and control of water flows also possible
    Measurement and control of water flows not exceeding 1l/min are also possible.
 
Applications
  • For accurate control of minute flows of gases and liquids
 
Standard Specifications
Rated flow ranges See Table of Rated Flow Ranges below.
Rotating speed Approx. 12 turns
Max. operating pressure 1.0MPa
Max. operating temperature (B) 70°C
(SS)120°C
Materials of parts exposed to fluids B:Brass,Duracon,NBR
SS:SUS316,Teflon,Viton
Fluids Gasses and liquids
Connection opening Rc1/4(Standard)
Items marked with an asterisk(*)indicate common specifications.
 
Table of Rated Flow Ranges(Reference)Due to operating conditions and instrumental errors, there may be differences in the range of 80% to130% between the values indicated in this table and those that are actually used by the customer.
Flow rate when the outlet valve is totally opened to release flows into air
Needle # Supply pressure(MPa) (AIR at 20°C) Supply pressure(MPa)(Water at 20°C)
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.05 0.1 0.15
#SS1 0.023 0.047 0.078 0.11 0.15 0.19 0.22 - - -
#S1 0.08 0.11 0.2 0.27 0.34 0.4 0.47 - - -
#1 0.15 0.23 0.36 0.51 0.65 0.79 0.93 0.00145 0.0026 0.0036
#2 0.34 0.46 0.71 1.0 1.2 1.5 1.75 0.0076 0.012 0.0153
#2A 0.45 0.65 1.0 1.3 1.65 2.0 2.3 0.0132 0.0195 0.0245
#3 0.9 1.3 2.0 2.6 3.25 3.9 4.6 0.026 0.039 0.051
#3A 1.25 1.9 2.75 3.65 4.5 5.3 6.4 0.0365 0.0546 0.074
#3B 1.85 2.5 3.7 5.0 6.0 7.2 8.3 0.053 0.076 0.098
#4 4.3 6.2 9.0 12.0 15.0 18.3 22.0 0.124 0.188 0.234
#4A 8.0 11.0 15.0 21.0 26.0 31.0 36.0 0.228 0.336 0.417
#5 10.0 14.0 21.0 27.0 33.0 40.0 46.0 0.294 0.435 0.576
#6 22.0 31.0 45.0 60.0 75.0 92.0 105 0.564 0.834 1.1
#6A 30.0 41.0 60.0 80.0 100 118 138 0.774 1.19 -
#6B 38.0 53.0 82.0 160 135 160 185 1.28 1.95 -
#7 80.0 110 160 215 260 285 310 1.84 2.89 -
  • Due to operating conditions and instrumental errors, there may be differences between the values indicated in the table above and those that are actually used by the customer.
  • The values shown in the table above are data for Model 2412L for illustrative purposes only. As compared with the 2412L, flows on the 2412T will run less smooth when the flow rate increases. It is therefore recommended that the 2412L be used for flows of 5l/min or more.
 
CV Values
Needle # Max. CV value
#SS1 0.00012
#S1 0.00028
#1 0.00058
#2 0.0012
#2A 0.0016
#3 0.0033
#3A 0.0048
#3B 0.0063
#4 0.016
#4A 0.028
#5 0.035
#6 0.078
#6A 0.10
#6B 0.13
#7 0.28
 
Notes
  • For large flows, please refer to Model 2412D(page 58).
  • We can suggest you the needle most suitable for your equipment if the pressure, fluid, flow rate and other operating conditions of your equipment are known. Please use the above table for reference only.
 
 
Click below to request for a quotation:
  
For further information, please contact NetMotion, Inc. at 1.800.790.7837 or 510.578.2814 or e-mail sales@netmotion.com
Copyright © 2007 NetMotion, Inc.