Precision Needle Valve w/Non-rotary Needle MODEL 2412 SERIES

Precision Needle Valve w/Non-rotary Needle MODEL 2412 SERIES

  • 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 characteristic (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  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.

    Applications

    • For accurate control of minute flows of gases and liquids

    Standard Specifications

    Rated flow ranges

    See the table below

    Number of turns of regulating screw

    Approx. 12 turns

    Maximum operating pressure

    1.0 MPa

    Maximum operating temperature

    (B) 70

    (SS) 120

    Materials of parts in contact with fluids

    (B) Brass, POM, NBR

    (SS) SUS316, fluorocarbon resin, FKM

    Fluids

    Gas and liquid

    Connection end

    Rc 1/4 (standard)

    Optional Specifications

    • Connection opening
    • Materials not included in the standard specifications

    Table of Rated Flow Ranges (Reference)

    Due to operating conditions and instrumental errors, there may be differences in the range of 80% to 130% between the
    values indicated in this table and those that are actually used by the customer. Please use these values for reference only.

    Flow rate when the outlet valve is totally opened to release flows into air

    Needle #

    Supply pressure (MPa)(Air at 20)

    Supply pressure (MPa)(Water at 20)

    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

    1.2

    1.5

    1.75

    0.0076

    0.012

    0.0153

    #2A

    0.45

    0.65

    1

    1.3

    1.65

    2

    2.3

    0.0132

    0.0195

    0.0245

    #3

    0.9

    1.3

    2

    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

    6

    7.2

    8.3

    0.053

    0.076

    0.098

    #4

    4.3

    6.2

    9

    12

    15

    18.3

    22

    0.124

    0.188

    0.234

    #4A

    8

    11

    15

    21

    26

    31

    36

    0.228

    0.336

    0.417

    #5

    10

    14

    21

    27

    33

    40

    46

    0.294

    0.435

    0.576

    #6

    22

    31

    45

    60

    75

    92

    105

    0.564

    0.834

    1.1

    #6A

    30

    41

    60

    80

    100

    118

    138

    0.774

    1.19

    #6B

    38

    53

    82

    106

    135

    160

    185

    1.28

    1.95

    #7

    80

    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      (L/MIN)
     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 5 L/MIN or more.

    CV Values

    2412 CV value

    Notes

    • For large flows, please refer to Model 2412D
    • 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.
    • Connection openings not included in the standard specifications.