高砂電気工業 List of Products and Services

"The structure of the diaphragm valve (diaphragm valve)" is a technical document that explains the internal structure of diaphragm valves, 2-way solenoid valves, and 3-way solenoid valves. [Contents] ■ Structure of the diaphragm valve (name and structural explanation with images) ■ Internal structure of the 2-way solenoid valve ■ Internal structure of the 3-way solenoid valve *For more details, please refer to the PDF document or feel free to contact us.

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The "pinch valve" is a valve that controls the flow of fluid by moving a metal rod called a plunger when voltage is applied, which in turn moves a tube holder to open and close the tube. Since this product only has contact with the tube, the tube can be replaced. This allows for the flow path to be kept clean at all times and prevents cross-contamination, making it suitable for use in medical and analytical equipment. Additionally, it can be used for liquids mixed with solid particles (slurries), which are difficult to handle with diaphragm valves. Furthermore, it has the advantages of low pressure loss and minimal occurrence of liquid pooling. 【Features】 ■ Tubes can be replaced ■ Keeps the flow path clean at all times ■ Prevents cross-contamination ■ Usable for liquids mixed with solid particles (slurries) ■ Low pressure loss ■ Minimal occurrence of liquid pooling *For more details, please refer to the PDF document or feel free to contact us.

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A "pinch valve" is a type of solenoid valve that opens and closes by directly crushing soft tubes such as silicone tubes. The double type is a pinch valve that can function as either an NC type or an NO type by attaching the tube to only one side, either the NC side or the NO side. Additionally, the dual type is a pinch valve that functions as a valve by attaching the tube to both the NC side and the NO side. [Types] ■Double ■Dual *For more details, please refer to the PDF document or feel free to contact us.

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I will explain the operating principle of the latch mechanism using the pinch valve "EL series" as an example. The latch mechanism transitions between open and closed states based on the variations in the strength of three elements: the suction force of the solenoid, the magnetic force of the permanent magnet, and the stroke of the movable iron core (plunger), balanced with a spring. When current flows through the coil, the plunger moves toward the pole piece. Therefore, even if the magnetic force from the coil disappears, the suction force overcomes the spring. This energy-efficient latch mechanism, which is less affected by temperature, can also be applied to diaphragm valves "LV series," pinch valves "PL series," and other valves. For more details, please contact our staff. *For detailed information on the operating principle, please refer to the link below. *For information on valves and pumps, please refer to the PDF materials or feel free to contact us.

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This is a notice regarding the usage precautions for the "Takasago Quantitative Discharge Pump." ■ If the initial set discharge amount is low, it may take a long time to completely replace the gas inside this product and the piping with liquid. Setting the discharge amount close to the maximum value during initial discharge will speed up the replacement. ■ The efficiency of gas discharge varies depending on the installation direction of this product. It also affects the discharge of bubbles generated in the fluid, so it is recommended to install it in the specified direction. ■ The set value may change due to loosening of the discharge amount adjustment screw. Please tighten the lock nut securely. ■ When reducing the discharge amount by turning the discharge amount adjustment screw to the right, do not turn the screw with excessive torque beyond the adjustment range. This may cause a malfunction. ■ When increasing the discharge amount by turning the discharge amount adjustment screw to the left, do not over-rotate the screw. If the screw is turned beyond the maximum discharge amount, there is a risk that the discharge amount adjustment screw may come off the product and internal components may fall out. * For information about the quantitative discharge pump, please refer to the PDF document or feel free to contact us.

• Other pumps

We introduce the causes and countermeasures regarding the factors that affect the discharge volume of the "Takasago quantitative dispensing pump." In the case of bubble formation, gas dissolved in the fluid may change into bubbles, leading to the occurrence of bubbles within the product and the piping, or leaks from fittings and other piping components. This can result in a decrease in discharge volume and poor reproducibility, so it is recommended to degas the fluid used. If the product is left unused for an extended period, the set discharge volume may change, and reproducibility may worsen. It is advisable to drain the fluid from the product for storage when not in operation for a long time. When using soft tubes such as silicone tubes in the piping, the suction and discharge pressure generated by the product may be absorbed by the elasticity of the soft tube. This can negatively impact the discharge volume and reproducibility, so it is recommended to use hard tubes such as fluoropolymer tubes in the piping. Additionally, there are other factors that can affect discharge volume and reproducibility beyond the items mentioned above. Please feel free to contact us if you have any questions. *For information on quantitative dispensing pumps, please refer to the PDF materials or feel free to contact us.*

• Other pumps

The quantitative dispensing pump is affected by changes in ambient temperature and fluid temperature, which influence the discharge volume and reproducibility. This occurs because the rubber components used in the wetted parts are affected by temperature, causing changes in hardness. Here, we present examples of measuring discharge volume and reproducibility when varying ambient and fluid temperatures. Measurement Model: NRP-500P Measurement Conditions: Discharge volume set to 500mm³ at an ambient temperature and fluid temperature of 24°C (Other than the conditions below, standard test conditions apply) 【Table of Changes in Ambient Temperature, Fluid Temperature, Discharge Volume, and Reproducibility - Measured Examples】 ■ Ambient Temperature, Fluid Temperature (°C): Discharge Volume (mm³): Reproducibility (Maximum Value Error / Minimum Value Error) - 10: 461: +4.64% / -4.70% - 24: 497: +0.64% / -0.62% - 40: 550: +2.20% / -2.89% *For detailed measurements, please refer to the link below. *For information on the quantitative dispensing pump, please refer to the PDF document or feel free to contact us.

• Other pumps

The quantitative discharge pump is affected by changes in the height of the suction lift. When the suction height is high, the discharge volume decreases, and when it is low, the discharge volume increases. Here, we present an example of measuring the change in discharge volume by varying the suction height. Measurement model: NRP-500P Measurement conditions: Discharge volume set to 500 mm³ at a suction height of 500 mm (Other than the conditions below, standard test conditions apply) 【Measured examples of changes in suction height and discharge volume ※Excerpt】 ■Suction height (mm): Discharge volume (mm³) ・50: 556 ・100: 542 ・200: 521 ・300: 505 *For detailed measurements, please refer to the link below. *For information on quantitative discharge pumps, please refer to the PDF document or feel free to contact us.

• Other pumps

The change in operating frequency of the quantitative dispensing pump affects the discharge volume and reproducibility. When the operating frequency is faster than the specified value in the drawing, reproducibility deteriorates. Here, we present an example of changing the operating frequency and measuring the change in reproducibility. Measurement model: NRP-500P Measurement conditions: At an operating frequency of 2Hz, the discharge volume is set to 500mm3 (Other than the conditions below, standard test conditions apply) 【Measured examples of changes in operating frequency and reproducibility (excerpt)】 ■Operating frequency: Reproducibility (maximum value error / minimum value error) ・5Hz: +5.88% / -7.00% ・3.3Hz: +5.08% / -2.39% ・2Hz (specified value in the drawing): +0.09% / -0.28% ・1.7Hz: +0.09% / -0.09% *For detailed measurements, please refer to the link below. *For information on quantitative dispensing pumps, please refer to the PDF document or feel free to contact us.

• Other pumps

Here are the standard test conditions for the "Quantitative Discharge Pump" from Takasago Electric Industry. 【Piping Conditions】 ■ Use fluororesin tubes with diameters of φ2×φ3 for piping connections. ■ The piping length for the primary side (IN) is set to 1000mm, and for the secondary side (OUT) to 100mm. ■ The tank for the fluid should be installed below the product, with the height of the primary side port (IN) set at 500mm from the liquid level. ■ The height of the end of the secondary side (OUT) piping should be at a horizontal position of 0mm. ■ A nozzle that reduces the piping diameter should be attached to the end of the secondary side (OUT) piping according to the set discharge amount. (If the discharge is set low and the piping diameter is large, the liquid may not discharge in one cycle due to the effects of surface tension and other factors.) 【Discharge Amount and Nozzle Attachment Guidelines】 ■ Set discharge amount (mm3): 10–50/50–100/100 or more ■ Diameter of the nozzle used (mm): 0.5/1.5/no nozzle *For more details, please refer to the PDF document or feel free to contact us.

• Other pumps

The quantitative dispensing pump allows you to change the discharge amount per cycle by rotating the discharge amount adjustment screw. Rotating the adjustment screw to the right (in the direction of pushing the product in) decreases the discharge amount, while rotating it to the left (in the direction of pulling the product out) increases the discharge amount. After adjusting the discharge amount, please secure it with the screw lock nut. The range of adjustment for the discharge amount is from the maximum point when fully pushed in with a right rotation (discharge amount 0 mm³) to several rotations with a left rotation. Additionally, please refer to the image for the recommended installation direction. 【Discharge Amount Adjustment Range】 ■ Model: MCP-50 ・ Number of rotations: 2 ■ Model: MLP-200P ・ Number of rotations: 3 ■ Model: PKP-500P ・ Number of rotations: 4 *For more details, please refer to the PDF document or feel free to contact us.

• Other pumps

The "vent duct" is an optional component designed to promote ventilation and heat dissipation. It can be installed between the valve body and the solenoid. In the heat dissipation effect test of the vent duct, it was found that by installing this product, the temperature rise inside the valve decreased by approximately 12°C. Without the vent duct, the fluid temperature rose by about 20°C due to the heat generated inside the solenoid. With the vent duct, the fluid temperature rise was reduced to below 8°C. [Test Conditions] ■ Fluid: Water (non-circulating) ■ Applied Voltage: DC24V (rated) *For more details, please refer to the PDF document or feel free to contact us.

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To verify the impact of the internal volume of the flow path switching solenoid valve used in the gas sampling control device on chromatographic analysis, we constructed a gas sampling control device and conducted measurements of standard samples. In this measurement, we compared the flow path switching of the device using a "zero dead volume valve (zero internal volume structure solenoid valve)" and a standard solenoid valve. The results of the measurements confirmed that the zero internal volume structure improved the performance of the gas sampling control device and enhanced the analytical accuracy of the chromatograph. Thus, our zero internal volume structure contributes to the improvement of the accuracy of analytical instruments. *For more details, please refer to the PDF document or feel free to contact us.*

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The advantages of the "PTFE (Teflon) seal valve" are that the drive part and the valve body part through which the fluid flows are separated, preventing the drive part from being corroded by the fluid. Since PTFE is used in the diaphragm and valve seal section, it has high corrosion resistance, is heat-resistant, and is less prone to dirt, making it easy to clean. Additionally, a point to note is that it is very sensitive to dust and debris, so it is necessary to install filters or similar devices to prevent foreign substances from mixing with the fluid. We offer an option called "soft seal," which uses a special elastomer known as perfluoroelastomer, which has excellent chemical resistance, to minimize the occurrence of scratches in the seal section. 【Advantages of PTFE Seal Valve】 ■ High corrosion resistance ■ Heat-resistant and less prone to dirt ■ Easy to clean *For more details, please refer to the PDF materials or feel free to contact us.

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We would like to introduce the screws that are commonly used in our company. There are types of screws with a triangular cross-section that are mainly used for fastening, including metric screws and unified screws. Depending on the pitch of the screw, there are coarse screws and fine screws, with fine screws having a smaller pitch compared to coarse screws. In the connection of pipe components and fluid equipment, there are pipe screws that primarily serve the purpose of mechanical coupling. Pipe screws include parallel screws and tapered screws. 【Lineup】 ■ Metric Screws - M5, M6, M12 (coarse screws) - M8 (fine screws) ■ Inch Screws - No.6-32UNC, No.10-24UNC (coarse screws) - No.10-32UNF, 1/4-28UNF (fine screws) ■ Pipe Screws - R1/8, R1/4 (tapered screws) - G1/8 (parallel screws) *For more details, please refer to the linked page or feel free to contact us.

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The thickness of the lead wires used in Takasago is represented according to the type of lead wire, either in American Wire Gauge (AWG) or in cross-sectional area. AWG notation is widely used to indicate the thickness of conductors. A diameter of 0.46 inches is defined as 0000 AWG or 4/0 AWG, and a diameter of 0.005 inches is defined as 36 AWG. By dividing these sizes in a geometric progression, 40 sizes from 4/0 to 36 AWG are established. Additionally, the cross-sectional area is expressed in mm². The lead wires used by our company are often represented with cross-sectional areas of 0.2 mm² or 0.08 mm², which correspond to 24 AWG and 28 AWG, respectively. * You can view the pumps and valves from Takasago at the link below. * For more details, please refer to our website or PDF materials, or feel free to contact us.

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I will explain the operating principle of the latch mechanism using the pinch valve "EL series" as an example. The latch mechanism transitions between open and closed states based on the variations in the strength of three elements: the suction force of the solenoid, the magnetic force of the permanent magnet, and the stroke of the movable iron core (plunger), balanced with a spring. When current flows through the coil, the plunger moves towards the pole piece. Therefore, even if the magnetic force from the coil disappears, the suction force overcomes the spring. This energy-efficient latch mechanism, which is less affected by temperature, can also be applied to diaphragm valves "LV series," pinch valves "PL series," and other valves. For more details, please contact our staff. *For more details on the operating principle, please refer to the link below. *For information on valves and pumps, please refer to the PDF materials or feel free to contact us.

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