This is an enhanced model of the KOFLOC Precision Needle Valve Model 2412 (see page 102), which now incorporates a multidial that allows the user to set desired flow rates by dial operations. This valve makes the most of the rotationto-flow linearity and repeatability performance of the 2412 needle.
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.
The natural environment is preserved through the balance of solids, liquids and gases that exist on the earth. However, human civilization has caused pollution that has greatly damaged our environment. The task of the present generation is to restore our environment to its natural healthy state. And this is also the greatest challenge for 21st century science and technology.
KOFLOC's corporate motto is "A Scientific Approach for Fluids." In other words, we create products that scientifically measure and control the balance of liquids and gases. We trust that through our work we are making a contribution to the regeneration of the environment and to the establishment of a prosperous society.
| 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
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 | 1.0 | 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 | 0.0260 | 0.0390 | 0.0510 | ||||||
| #3A | 1.25 | 1.9 | 2.75 | 3.65 | 4.5 | 5.3 | 6.4 | 0.0365 | 0.0546 | 0.0740 | ||||||
| #3B | 1.85 | 2.5 | 3.7 | 5.0 | 6.0 | 7.2 | 8.3 | 0.053 | 0.0760 | 0.0980 | ||||||
| #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 | 0.564 | 0.834 | 1.100 | ||||||
| #6A | 30.0 | 41.0 | 60.0 | 80.0 | 100 | 118 | 138 | 0.774 | 1.190 | － | ||||||
| #6B | 38.0 | 53.0 | 82.0 | 106 | 135 | 160 | 185 | 1.280 | 1.950 | － | ||||||
| #7 | 80.0 | 110 | 160 | 215 | 260 | 285 | 310 | 1.840 | 2.890 | － | ||||||
| * 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. | ||||||||||||||||
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